Patent US4814546A successfully refreshed from Google Patents.
US4814546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic radiation suppression cover
Assignee: 3M Co
•
Filing: 1987-11-25
•
Granted: 1989-03-21
•
Expires: 2007-11-25
Abstract
Abstract An electromagnetic radiation suppression covering conformable to a corresponding selected structure through reducing the extent of a surface dimension therein and containing one or more absorptive kinds of particles in a sheet of a corresponding thickness including such particles as iron oxides with adsorbed surface layers, such covering being formed through extruding a mixture of selected particles and binding material.
Inventors
- 👤 Leland R. Whitney
- 👤 Charles D. Hoyle
- 👤 Ronald W. Seemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:35
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0083
Claims Analysis
Total Claims: 100
Claim 1
Independent Claim
266 words
An electromagnetic radiation suppression covering for screening selected structures to thereby suppress to a selected extent, with respect to selected regions, presence of electromagnetic radiation of selected frequencies which has impinged on such screened structures, with screening of a corresponding selected structure to be accomplished through having a corresponding said suppression covering selectively conformed thereto, said suppression covering comprising a material means having at least a sheet portion of selected configuration formed of a polymeric binding material which is conformable to a corresponding selected structure through an initiation of a reduction in extent of a surface of said sheet portion in at least one direction due to forces internal thereto after said suppression covering has been position about such a corresponding selected structure, said sheet portion having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies, said suppression covering having said first kind of particulate distributed in said sheet portion to thereby have an electromagnetic radiation reflection coefficient having a value at frequencies equal to said selected frequencies, for electromagnetic radiation containing at least some of said selected frequencies which is directly incident on said sheet portion at locations where it is conformed to a corresponding selected structure, of less than seven-tenths of that value of said reflection coefficient occurring at that location on at such a corresponding selected structure absent said suppression covering.
Claim 2
Dependent Claim
266 words
An electromagnetic radiation suppression covering for screening selected structures to thereby suppress to a selected extent, with respect to selected regions, presence of electromagnetic radiation of selected frequencies which has impinged on such screened structures, with screening of a corresponding selected structure to be accomplished through having a corresponding said suppression covering selectively conformed thereto, said suppression covering comprising a material means having at least a sheet portion of selected configuration formed of a polymeric binding material which is conformable to a corresponding selected structure through an initiation of a reduction in extent of a surface of said sheet portion in at least one direction due to forces internal thereto after said suppression covering has been position about such a corresponding selected structure, said sheet portion having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies, said suppression covering having said first kind of particulate distributed in said sheet portion to thereby have an electromagnetic radiation reflection coefficient having a value at frequencies equal to said selected frequencies, for electromagnetic radiation containing at least some of said selected frequencies which is directly incident on said sheet portion at locations where it is conformed to a corresponding selected structure, of less than seven-tenths of that value of said reflection coefficient occurring at that location on at such a corresponding selected structure absent said suppression covering.
Claim 3
Dependent Claim
33 words
The article of claim 1 wherein said suppression covering has two edges which can be joined such that a cross section of said suppression covering with said edges joined follows a closed curve.
Claim 4
Dependent Claim
25 words
The article of claim 1 wherein said suppression covering consists entirely of said sheet portion and has a cross section which follows a closed curve.
Claim 5
Dependent Claim
15 words
The article of claim 3 wherein said sheet portion is seamless along said closed curve.
Claim 6
Dependent Claim
30 words
The article of claim 1 wherein said binding material with said particulate distributed therein in said sheet portion is heat shrinkable and said selective initiation is provision of heat thereto.
Claim 7
Dependent Claim
25 words
The apparatus of claim 5 wherein said polymeric binding material is formed from a group consisting of silicone polymers and polyolefin polymers and copolymers thereof.
Claim 8
Dependent Claim
34 words
The article of claim 1 wherein said binding material with said first kind of particulate distributed therein in said sheet portion is solvent shrinkable and said selective initiation is evaporation of a solvent therefrom.
Claim 9
Dependent Claim
26 words
The article of claim 7 wherein said polymeric binding material is an elastomer selected from a group consisting of polychloroprenes and natural rubbers and mixtures thereof.
Claim 10
Dependent Claim
49 words
The article of claim 1 wherein said binding material with said first of kind particulate distributed therein in said sheet portion is elastomeric and said selective initiation is a stretch thereof followed by said positioning of said suppression covering about a corresponding said selected structure and a subsequent release.
Claim 11
Dependent Claim
24 words
The article of claim 6 wherein said polymeric binding material is an elastomer selected from a group consisting of synthetic elastomers and natural rubbers.
Claim 12
Dependent Claim
46 words
The apparatus of claim 1 wherein said sheet portion has both its permittivity and permeability parameters with an imaginary part thereof of a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 13
Dependent Claim
45 words
The article of claim 1 wherein said suppression covering is a laminate with at least a first one of said lamina therein being formed of said polymeric binding material having said sheet portion therein in which said first kind of particulate is distributed as aforesaid.
Claim 14
Dependent Claim
36 words
The article of claim 12 wherein there is a second lamina having a sheet portion adjacent said first lamina sheet portion formed of a polymeric binding material in which a second kind of particulate is distributed.
Claim 15
Dependent Claim
24 words
The article of claim 12 wherein there is a second lamina formed of an electrically conductive material and located adjacent to said first lamina.
Claim 16
Dependent Claim
60 words
The article of claim 13 wherein said second lamina sheet portion with said second kind of particulate distributed therein thereby has permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 17
Dependent Claim
83 words
The article of claim 15 wherein each of said first and second kinds of particulate comprises particles having a permittivity or a permeability parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies with at least some frequencies over which that permittivity or permeability parameter of particles in said first kind of particulate decreases significantly differing from those frequencies over which that permittivity or permeability parameter of said second kind of particulate decreases significantly.
Claim 18
Dependent Claim
34 words
The article of claim 1 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being electrically conductive with a selected electrical conductivity.
Claim 19
Dependent Claim
30 words
The article of claim 17 wherein said particles in said first kind of particulate are formed of a composite having an electrically insulating interior with an electrically conducting coating thereon.
Claim 20
Dependent Claim
33 words
The article of claim 1 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being ferromagnetic with a selected magnetic permeability.
Claim 21
Dependent Claim
99 words
The article of claim 1 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion, and wherein each of said first and second kinds of particulate comprise particles having a permittivity parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies with at least some frequencies over which that permittivity parameter of particles in said first kind of particulate decreases significantly differing from those frequencies over which that permittivity parameter of particles in said second kind of particulate decreases significantly.
Claim 22
Dependent Claim
99 words
The article of claim 1 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion, and wherein each of said first and second kinds of particulate comprise particles having a permeability parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies with at least some frequencies over which that permeability parameter of particles in said first kind of particulate decreases significantly differing from those frequencies over which that permeability parameter of particles in said second kind of particulate decreases significantly.
Claim 23
Dependent Claim
105 words
The article of claim 1 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion, and wherein a selected one of said first and second kinds of particulate comprises particles having a permittivity parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies and that kind of particulate remaining comprises particles having a permeability parameter with an imaginary part thereof that significantly decreases over at least some frequencies differing from those over which said permittivity parameter of particles in said first kind particulate decreases as aforesaid.
Claim 24
Dependent Claim
53 words
The article of claim 1 wherein said particles in said first kind of particulate have an average maximum cross section dimension which is less than one-tenth of those wavelengths of any electromagnetic radiation propagation in said sheet portion as a result of its impinging thereon containing frequencies which are among said selected frequencies.
Claim 25
Dependent Claim
33 words
The article of claim 11 wherein said particles in said first kind of particulate have an average maximum cross section dimension which is at least three times its average minimum cross section dimension.
Claim 26
Dependent Claim
54 words
The article of claim 1 wherein said first kind of particulate has a kind or particles selected from a group of two kinds of particles consisting of ferrosoferric oxide with a thin adsorbed surface layer of cobalt, and a ferric oxide with a thin adsorbed surface layer of cobalt and doubly ionized iron atoms.
Claim 27
Dependent Claim
251 words
An electromagnetic radiation suppression covering for screening selected structures to thereby suppress to a selected extent, with respect to selected regions, presence of electromagnetic radiation of selected frequencies which has impinged on such screened structures, with screening of a corresponding selected structure to be accomplished through having a corresponding said suppression covering selectively conformed thereto, said suppression covering comprising a material means having at least a sheet portion of a selected configuration formed of a polymeric binding material which is conformable to a corresponding selected structure through an initiation of a reduction in extent of a surface of said sheet portion in at least one direction due to forces internal thereto after said suppression covering has been positioned about such a corresponding selected structure, said sheet portion having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies, said suppression covering having said sheet portion of a configuration capable of substantially reaching a selected thickness, as a result of said suppression covering being conformed to a corresponding said selected structure as aforesaid, which thickness is substantially one-fortieth to one-fourth of those wavelengths of that portion of any electromagnetic radiation propagating in said sheet portion as a result of its impinging thereon with frequencies therein which are among said selected frequencies.
Claim 28
Dependent Claim
251 words
An electromagnetic radiation suppression covering for screening selected structures to thereby suppress to a selected extent, with respect to selected regions, presence of electromagnetic radiation of selected frequencies which has impinged on such screened structures, with screening of a corresponding selected structure to be accomplished through having a corresponding said suppression covering selectively conformed thereto, said suppression covering comprising a material means having at least a sheet portion of a selected configuration formed of a polymeric binding material which is conformable to a corresponding selected structure through an initiation of a reduction in extent of a surface of said sheet portion in at least one direction due to forces internal thereto after said suppression covering has been positioned about such a corresponding selected structure, said sheet portion having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies, said suppression covering having said sheet portion of a configuration capable of substantially reaching a selected thickness, as a result of said suppression covering being conformed to a corresponding said selected structure as aforesaid, which thickness is substantially one-fortieth to one-fourth of those wavelengths of that portion of any electromagnetic radiation propagating in said sheet portion as a result of its impinging thereon with frequencies therein which are among said selected frequencies.
Claim 29
Dependent Claim
33 words
The article of claim 26 wherein said suppression covering has two edges which can be joined such that a cross section of said suppression covering with said edges joined follows a closed curve.
Claim 30
Dependent Claim
25 words
The article of claim 26 wherein said suppression covering consists entirely of said sheet portion and has a cross section which follows a closed curve.
Claim 31
Dependent Claim
15 words
The article of claim 28 wherein said sheet portion is seamless along said closed curve.
Claim 32
Dependent Claim
30 words
The article of claim 26 wherein said binding material with said particulate distributed therein in said sheet portion is heat shrinkable and said selective initiation is provision of heat thereto.
Claim 33
Dependent Claim
25 words
The article of claim 30 wherein said polymeric binding material is formed from a group consisting of silicone polymers and polyolefin polymers and copolymers thereof.
Claim 34
Dependent Claim
34 words
The article of claim 26 wherein said binding material with said first kind of particulate distributed therein in said sheet portion is solvent shrinkable and said selective initiation is evaporation of a solvent therefrom.
Claim 35
Dependent Claim
27 words
The article of claim 32 wherein said polymeric binding material is an elastomer selected from a group consisting of synthetic elastomers and natural rubbers and mixtures thereof.
Claim 36
Dependent Claim
49 words
The article of claim 26 wherein said binding material with said first kind of particulate distributed therein in said sheet portion is elastomeric and said selective initiation is a stretch thereof followed by said positioning of said suppression covering about a corresponding said selected structure and a subsequent release.
Claim 37
Dependent Claim
24 words
The article of claim 34 wherein said polymeric binding material is an elastomer selected from a group consisting of synthetic elastomers and natural rubbers.
Claim 38
Dependent Claim
46 words
The article of claim 26 wherein said sheet portion has both its permittivity and permeability parameters with an imaginary part thereof of a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 39
Dependent Claim
45 words
The article of claim 26 wherein said suppression covering is a laminate with at least a first one of said lamina therein being formed of said polymeric binding material having said sheet portion therein in which said first kind of particulate is distributed as aforesaid.
Claim 40
Dependent Claim
36 words
The article of claim 37 wherein there is a second lamina having a sheet portion adjacent said first lamina sheet portion formed of a polymeric binding material in which a second kind of particulate is distributed.
Claim 41
Dependent Claim
24 words
The article of claim 37 wherein there is a second lamina formed of an electrically conductive material and located adjacent to said first lamina.
Claim 42
Dependent Claim
57 words
The article of claim 38 wherein said second lamina sheet portion with said second kind of particulate distributed therein thereby has permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for at least some of said selected frequencies.
Claim 43
Dependent Claim
75 words
The article of claim 40 wherein each of said first and second kinds of particulate comprises particles having a permittivity or a permeability decreases over at least some frequencies equal to said selected frequencies with at least some frequencies over which that permittivity or permeability parameter of articles in said first kind of particulate decreases significantly differing from those frequencies over which that permittivity or permeability parameter of said second kind of particulate decreases significantly.
Claim 44
Dependent Claim
34 words
The article of claim 26 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being electrically conductive with a selected electrical conductivity.
Claim 45
Dependent Claim
30 words
The article of claim 42 wherein said particles in said first kind of particulate are formed of a composite having an electrically insulating interior with an electrically conducting coating thereon.
Claim 46
Dependent Claim
33 words
The article of claim 26 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being ferromagnetic with a selected magnetic permeability.
Claim 47
Dependent Claim
99 words
The article of claim 26 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion, and wherein each of said first and second kinds of particulate comprise particles having a permittivity parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies with at least some frequencies over which that permittivity parameter of particles in said first kind of particulate decreases significantly differing from those frequencies over which that permittivity parameter of particles in said second kind of particulate decreases significantly.
Claim 48
Dependent Claim
99 words
The article of claim 26 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion, and wherein each of said first and second kinds of particulate comprise particles having a permeability parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies with at least some frequencies over which that permeability parameter of particles in said first kind of particulate decreases significantly differing from those frequencies over which that permeability parameter of particles in said second kind of particulate decreases significantly.
Claim 49
Dependent Claim
97 words
The article of claim 26 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion, and wherein a selected one of said first and second kinds of particulate comprises particles having a permittivity parameter with an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies and that kind of particulate remaining comprises particles having a permeability parameter with an least some frequencies differing from those over which said permittivity parameter of particles in said first kind particulate decreases as aforesaid.
Claim 50
Dependent Claim
53 words
The article of claim 26 wherein said particles in said first kind of particulate have an average maximum cross section dimension which is less than one-tenth of those wavelengths of any electromagnetic radiation propagating in said sheet portion as a result of its impinging thereon containing frequencies which are among said selected frequencies.
Claim 51
Dependent Claim
33 words
The article of claim 36 wherein said particles in said first kind of particulate have an average maximum cross section dimension which is at least three times its average minimum cross section dimension.
Claim 52
Dependent Claim
54 words
The article of claim 26 wherein said first kind of particulate has a kind or particles selected from a group of two kinds of particles consisting of ferrosoferric oxide with a thin adsorbed surface layer of cobalt, and a ferric oxide with a thin adsorbed surface layer of cobalt and doubly ionized iron atoms.
Claim 53
Dependent Claim
217 words
An electromagnetic radiation suppression covering for screening selected structures to thereby suppress to a selected extent, with respect to selected regions, presence of electromagnetic radiation of selected frequencies less than infrared frequencies which has impinged on such screened structures, with screening of a corresponding selected structure to be accomplished through having a corresponding suppression covering selectively conformed thereto, said suppression covering comprising a material means having at least a sheet portion of a selected configuration formed of a polymeric binding material which is conformable to a corresponding selected structure through an initiation of a reduction in extent of a surface of said sheet portion in at least one direction due to forces internal thereto after said suppression covering has been positioned about such a corresponding selected structure, said sheet portion having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies, whereby that part of any electromagnetic radiation containing said selected frequencies impinging on a selected structure, if screened by said suppression covering through its being conformed thereto as aforesaid, is suppressed in selected regions thereabout.
Claim 54
Dependent Claim
217 words
An electromagnetic radiation suppression covering for screening selected structures to thereby suppress to a selected extent, with respect to selected regions, presence of electromagnetic radiation of selected frequencies less than infrared frequencies which has impinged on such screened structures, with screening of a corresponding selected structure to be accomplished through having a corresponding suppression covering selectively conformed thereto, said suppression covering comprising a material means having at least a sheet portion of a selected configuration formed of a polymeric binding material which is conformable to a corresponding selected structure through an initiation of a reduction in extent of a surface of said sheet portion in at least one direction due to forces internal thereto after said suppression covering has been positioned about such a corresponding selected structure, said sheet portion having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies, whereby that part of any electromagnetic radiation containing said selected frequencies impinging on a selected structure, if screened by said suppression covering through its being conformed thereto as aforesaid, is suppressed in selected regions thereabout.
Claim 55
Dependent Claim
33 words
The article of claim 51 wherein said suppression covering has two edges which can be joined such that a cross section of said suppression covering with said edges joined follows a closed curve.
Claim 56
Dependent Claim
25 words
The article of claim 51 wherein said suppression covering consists entirely of said sheet portion and has a cross section which follows a closed curve.
Claim 57
Dependent Claim
30 words
The article of claim 51 wherein said binding material with said particulate distributed therein in said sheet portion is heat shrinkable and said selective initiation is provision of heat thereto.
Claim 58
Dependent Claim
34 words
The article of claim 51 wherein said binding material with said first kind of particulate distributed therein in said sheet portion is solvent shrinkable and said selective initiation is evaporation of a solvent therefrom.
Claim 59
Dependent Claim
49 words
The article of claim 51 wherein said binding material with said first kind of particulate distributed therein in said sheet portion is elastomeric and said selective initiation is a stretch thereof followed by said positioning of said suppression covering about a corresponding said selected structure and a subsequent release.
Claim 60
Dependent Claim
46 words
The article of claim 51 wherein said sheet portion has both its permittivity and permeability parameters with an imaginary part thereof of a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 61
Dependent Claim
25 words
The article of claim 51 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion.
Claim 62
Dependent Claim
45 words
The article of claim 51 wherein said suppression covering is a laminate with at least a first one of said lamina therein being formed of said polymeric binding material having said sheet portion therein in which said first kind of particulate is distributed as aforesaid.
Claim 63
Dependent Claim
34 words
The article of claim 51 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being electrically conductive with a selected electrical conductivity.
Claim 64
Dependent Claim
33 words
The article of claim 51 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being ferromagnetic with a selected magnetic permeability.
Claim 65
Dependent Claim
54 words
The article of claim 51 wherein said first kind of particulate has a kind of particles selected from a group of two kinds of particles consisting of ferrosoferric oxide with a thin adsorbed surface layer of cobalt, and a ferric oxide with a thin adsorbed surface layer of cobalt and doubly ionized iron atoms.
Claim 66
Dependent Claim
194 words
A covered conductor about which, with respect to selected regions, presence of electromagnetic radiation of selected frequencies which has impinged on said covered conductor is suppressed to a selected extent, said covered conductor comprising: a conductor of a selected electrical conductivity which is elongated; and a covering material formed about said elongated conductor absent any seam extending substantially parallel to said axis thereof, and formed directly against said elongated conductor substantially absent of any other material being interposed therebetween, said covering material having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part of frequencies equal to at least some of said selected frequencies to result in said covering material having an electromagnetic radiation reflection coefficient with a value at frequencies equal to said selected frequencies for electromagnetic radiation containing at least some of said selected frequencies which is directly incident thereon, of less than seven-tenths of that value of said reflection coefficient at such a location on said conductor absent said covering material.
Claim 67
Dependent Claim
194 words
A covered conductor about which, with respect to selected regions, presence of electromagnetic radiation of selected frequencies which has impinged on said covered conductor is suppressed to a selected extent, said covered conductor comprising: a conductor of a selected electrical conductivity which is elongated; and a covering material formed about said elongated conductor absent any seam extending substantially parallel to said axis thereof, and formed directly against said elongated conductor substantially absent of any other material being interposed therebetween, said covering material having distributed therein at least a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part of frequencies equal to at least some of said selected frequencies to result in said covering material having an electromagnetic radiation reflection coefficient with a value at frequencies equal to said selected frequencies for electromagnetic radiation containing at least some of said selected frequencies which is directly incident thereon, of less than seven-tenths of that value of said reflection coefficient at such a location on said conductor absent said covering material.
Claim 68
Dependent Claim
29 words
The article of claim 63 wherein said covering material with said first kind of particulate distributed therein is a polymeric material heat shrunk to conform to said elongated conductor.
Claim 69
Dependent Claim
24 words
The article of claim 64 wherein said covering material is formed from a group consisting of silicone polymers and polyolefin polymers and copolymers thereof.
Claim 70
Dependent Claim
29 words
The article of claim 63 wherein, said covering material with said first kind of particulate distributed therein is a polymeric material which has been extruded about said elongated conductor.
Claim 71
Dependent Claim
25 words
The article of claim 66 wherein said covering material is a polymeric material selected from a group consisting of polyvinyl chloride, polyethylene, polyamide and polyurethane.
Claim 72
Dependent Claim
27 words
The article of claim 63 wherein said covering material with said first kind of particulate distributed therein is a polymeric material solvent shrunk to said elongated conductor.
Claim 73
Dependent Claim
26 words
The article of claim 68 wherein said polymeric binding material is an elastomer selected from a group consisting of polychloroprenes and natural rubbers and mixtures thereof.
Claim 74
Dependent Claim
31 words
The article of claim 63 wherein said covering material with said first kind of particulate distributed therein is an elastomeric material which has elastic forces holding it about said elongated conductor.
Claim 75
Dependent Claim
24 words
The article of claim 70 wherein said polymeric binding material is an elastomer selected from a group consisting of synthetic elastomers and natural rubbers.
Claim 76
Dependent Claim
46 words
The article of claim 63 wherein said covering material has both its permittivity and permeability parameters with an imaginary part thereof of a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 77
Dependent Claim
20 words
The article of claim 63 wherein at least a second kind of particulate is also distributed in said covering material.
Claim 78
Dependent Claim
33 words
The article of claim 63 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being electrically conductive with a selected conductivity.
Claim 79
Dependent Claim
30 words
The article of claim 74 wherein said particles in said first kind of particulate are formed of a composite having an electrical insulating interior with an electrical conducting coating thereon.
Claim 80
Dependent Claim
33 words
The article of claim 63 wherein said first kind of particulate leads to said sheet portion having said permittivity and permeability parameters through said particles therein being ferromagnetic with a selected magnetic permeability.
Claim 81
Dependent Claim
53 words
The article of claim 63 wherein said particles in said first kind of particulate have an average maximum cross section dimension which is less than one-tenth of those wavelengths of any electromagnetic radiation propagating in said covering material as a result of its impinging thereon containing frequencies which are among said selected frequencies.
Claim 82
Dependent Claim
33 words
The article of claim 63 wherein said particles in said first kind of particulate have an average maximum cross section dimension which is at least three times its average minimum cross section dimension.
Claim 83
Dependent Claim
54 words
The article of claim 63 wherein said first kind of particulate has a kind of particles selected from a group of two kinds of particles consisting of ferrosoferric oxide with a thin adsorbed surface layer of cobalt, and a ferric oxide with a thin adsorbed surface layer of cobalt and doubly ionized iron atoms.
Claim 84
Independent Claim
224 words
A method for suppressing to a selected extent, with respect to selected regions about a selected structure, presence of electromagnetic radiation of selected frequencies which has impinged on an arrangement including that selected structure, said method comprising: forming a suppression covering in a selected configuration adapted to cover at least a portion of a corresponding structure, said suppression covering formed of a polymeric binding material in at least a sheet portion thereof which is capable of having a reduction in an extent of surface thereof due to internal forces initiated in at least one direction therealong, said sheet portion having distributed therein a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies; and conforming said suppression covering about at least a portion of a selected corresponding structure by initiating a reduction in said surface extent of said sheet portion such that said sheet portion after such conformation has a resulting thickness which is substantially one-fortieth to one-fourth of a wavelength of that portion of any electromagnetic radiation propagating in said sheet as a result of its impinging thereof with frequencies therein which are among said selected frequencies.
Claim 85
Independent Claim
224 words
A method for suppressing to a selected extent, with respect to selected regions about a selected structure, presence of electromagnetic radiation of selected frequencies which has impinged on an arrangement including that selected structure, said method comprising: forming a suppression covering in a selected configuration adapted to cover at least a portion of a corresponding structure, said suppression covering formed of a polymeric binding material in at least a sheet portion thereof which is capable of having a reduction in an extent of surface thereof due to internal forces initiated in at least one direction therealong, said sheet portion having distributed therein a first kind of particulate to thereby have permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies; and conforming said suppression covering about at least a portion of a selected corresponding structure by initiating a reduction in said surface extent of said sheet portion such that said sheet portion after such conformation has a resulting thickness which is substantially one-fortieth to one-fourth of a wavelength of that portion of any electromagnetic radiation propagating in said sheet as a result of its impinging thereof with frequencies therein which are among said selected frequencies.
Claim 86
Dependent Claim
48 words
The method of claim 80 wherein said conforming of said suppression covering about at least a portion of said selected corresponding structure further comprises joining two edges of said suppression covering such that a cross section of said suppression covering with said edges joined follows a closed curved.
Claim 87
Dependent Claim
60 words
The method of claim 80 wherein said conforming of said suppression covering about at least a portion of said selected corresponding structure further comprises having said suppression covering in a tubular form which is placed about said selected corresponding structure, and said initiating of a reduction in said surface extent comprises shrinking said suppression covering about said selected corresponding structure.
Claim 88
Dependent Claim
30 words
The method of claim 80 wherein an electrical conductive material tubular means is positioned about said selected corresponding structure within said suppression covering and said suppression covering is shrunken therearound.
Claim 89
Dependent Claim
46 words
The method of claim 80 wherein said sheet portion has both its permittivity and permeability parameters with an imaginary part thereof of a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 90
Dependent Claim
37 words
The method of claim 80 wherein said first kind of particulate has particles of a permittivity or permeability parameter having an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies.
Claim 91
Dependent Claim
25 words
The method of claim 80 wherein at least a second kind of particulate is also distributed in said polymeric binding material in said sheet portion.
Claim 92
Independent Claim
232 words
A method for providing a means capable of suppressing to a selected extent, with respect to selected regions about a selected structure, presence of electromagnetic radiation at selected frequencies which has impinged on an arrangement including that selected structure, said method comprising: selecting a first kind of particulate having permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies; selecting a resin which will yield a polymeric binding material of a selected permittivity at said selected frequencies which is capable of having said first kind of particulate distributed therein and which is capable of being selectively conformed with said first kind or particulate therein to a corresponding structure; and mixing together said first kind of particulate and said resin and extruding a seamless tube of this mixture to result in said tube having an electromagnetic radiation reflection coefficient with a value at frequencies equal to said selected frequencies, for electrode magnetic radiation containing at least some of said selected frequencies which is directly incident on said tube at locations where it is conformed to a corresponding selected structure, of less than seven tenths of that value of said reflection coefficient occurring at such a location on that corresponding selected structure absence said tube.
Claim 93
Independent Claim
232 words
A method for providing a means capable of suppressing to a selected extent, with respect to selected regions about a selected structure, presence of electromagnetic radiation at selected frequencies which has impinged on an arrangement including that selected structure, said method comprising: selecting a first kind of particulate having permittivity and permeability parameters at least one of which has an imaginary part thereof with a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies; selecting a resin which will yield a polymeric binding material of a selected permittivity at said selected frequencies which is capable of having said first kind of particulate distributed therein and which is capable of being selectively conformed with said first kind or particulate therein to a corresponding structure; and mixing together said first kind of particulate and said resin and extruding a seamless tube of this mixture to result in said tube having an electromagnetic radiation reflection coefficient with a value at frequencies equal to said selected frequencies, for electrode magnetic radiation containing at least some of said selected frequencies which is directly incident on said tube at locations where it is conformed to a corresponding selected structure, of less than seven tenths of that value of said reflection coefficient occurring at such a location on that corresponding selected structure absence said tube.
Claim 94
Dependent Claim
20 words
The method of claim 87 wherein said extruding of a tube further comprises extruding said tube about an elongated conductor.
Claim 95
Dependent Claim
45 words
The method of claim 87 wherein said tube has both its permittivity and permeability parameters with an imaginary part thereof of a magnitude that is at least one-tenth that of its corresponding real part for frequencies equal to at least some of said selected frequencies.
Claim 96
Dependent Claim
37 words
The method of claim 87 wherein said first kind of particulate has particles with a permittivity or permeability parameter having an imaginary part thereof that significantly decreases over at least some frequencies equal to said selected frequencies.
Claim 97
Independent Claim
43 words
The method of 87 wherein said extruding of a tube further comprises preparing such tube that subsequently a surface extent thereof can be reduced in at least one direction so that said tube can be conformed to a selected corresponding said selected structure.
Claim 98
Independent Claim
43 words
The method of 87 wherein said extruding of a tube further comprises preparing such tube that subsequently a surface extent thereof can be reduced in at least one direction so that said tube can be conformed to a selected corresponding said selected structure.
Claim 99
Dependent Claim
28 words
The method of claim 91 wherein said extruding of said tube further comprises irradiating said tube, heating said tube, stretching said tube and cooling said tube while stretched.
Claim 100
Dependent Claim
48 words
The method of claim 92 wherein said cooling is followed by dividing said tube along a tube wall substantially parallel to its elongation to form two tube edges, and affixing a joining means to said tube edges so that a tube is capable of being formed by joining.
References Cited (Backward Citations)
US2027962A
Cited
US2249091A
Cited
US2863132A
Cited
US3240621A
Cited
US3526896A
Cited
US3191132A
Cited
US3938152A
Cited
US3843593A
Cited
US3908267A
Cited
US3950604A
Cited
US3951904A
Cited
US4016356A
Cited
US4101699A
Cited
US4003840A
Cited
US4421582A
Cited
US4116906A
Cited
US4137342A
Cited
US4163117A
Cited
US4319074A
Cited
US4226909A
Cited
US4251304A
Cited
US4363842A
Cited
US4499438A
Cited
US4486721A
Cited
US4414339A
Cited
US4538151A
Cited
US4555422A
Cited
US4699743A
Cited
US4493912A
Cited
US4624879A
Cited
US4512833A
Cited
US4690778A
Cited
JPH05130262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |