US3873784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic transducer
Assignee: AUDIO ARTS Inc
•
Filing: 1973-03-29
•
Granted: 1975-03-25
•
Expires: 1993-03-29
Abstract
Abstract An acoustic transducer of planar shape. An electric conductor means of a coil, preferably flat spiral or flat helical configuration is operably attached to a diaphragm and positioned in the magnetic field of at least one magnetized member adjacent one of its pole faces. Magnetically conductive pole pieces preferably are positioned adjacent the magnetized member to form a dense elongated region of preferably substantially uniform magnetic flux density in said magnetic field where the electric conductor means is preferably located. Preferably said region in said magnetic field is contained in pairs of spaced apart elongated gaps formed by said pole pieces and one said magnetized member. A second diaphragm is preferably positioned adjacent the opposite pole face of one said magnetized member and preferably driven by a separate electric conductor means and the volume contained between said diaphragms is enclosed.
Inventors
- 👤 Antony Z Doschek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:37
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/06; H04R9/02; H04R9/025; H04R9/04; H04R9/046; H04R9/047
Claims Analysis
Total Claims: 84
Claim 1
Independent Claim
138 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having at least one substantially planar pole face; at least one electric conductor means of substantially coil shape positioned in at least one said magnetic field of at least one magnetized member and positioned substantially parallel to and spaced from at least one said planar pole face; magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing said electric conductor means; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from at least one said planar pole face; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 2
Dependent Claim
138 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having at least one substantially planar pole face; at least one electric conductor means of substantially coil shape positioned in at least one said magnetic field of at least one magnetized member and positioned substantially parallel to and spaced from at least one said planar pole face; magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing said electric conductor means; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from at least one said planar pole face; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 3
Dependent Claim
190 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having at least one planar pole face; at least one pole piece of magnetically conductive material positioned adjacent at least one said magnetized member for forming elongated regions of relatively high flux density in at least one said magnetic field; at least one electric conductor means of substantially coil shape positioned in at least one said magnetic field and forming a planar shape substantially parallel to and spaced from at least one said planar pole face; magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing said electric conductor means; at least one planar diaphragm operably attached to at least one said electric conductor means and substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 4
Dependent Claim
190 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having at least one planar pole face; at least one pole piece of magnetically conductive material positioned adjacent at least one said magnetized member for forming elongated regions of relatively high flux density in at least one said magnetic field; at least one electric conductor means of substantially coil shape positioned in at least one said magnetic field and forming a planar shape substantially parallel to and spaced from at least one said planar pole face; magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing said electric conductor means; at least one planar diaphragm operably attached to at least one said electric conductor means and substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 5
Dependent Claim
186 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having at least one planar pole face; at least one pole piece of magnetically conductive material substantially U-shaped for forming elongated regions of relatively high flux density in at least one said magnetic field, said pole piece adjoining at least one pole face of said magnetized member conjugate to said planar pole face and extending beyond the conductor means at periphery portions thereof; at least one electric conductor means of substantially coil shape positioned in at least one said magnetic field and forming a planar shape substantially parallel to and spaced from at least one said planar pole face; at least one planar diaphragm operably attached to at least one said electric conductor means and substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 6
Dependent Claim
186 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having at least one planar pole face; at least one pole piece of magnetically conductive material substantially U-shaped for forming elongated regions of relatively high flux density in at least one said magnetic field, said pole piece adjoining at least one pole face of said magnetized member conjugate to said planar pole face and extending beyond the conductor means at periphery portions thereof; at least one electric conductor means of substantially coil shape positioned in at least one said magnetic field and forming a planar shape substantially parallel to and spaced from at least one said planar pole face; at least one planar diaphragm operably attached to at least one said electric conductor means and substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 7
Dependent Claim
161 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having at least one substantially planar pole face; pole pieces of magnetically conductive material positioned adjacent the periphery of said magnetized member for forming elongated regions of relatively high flux density in said magnetic field; at least one electric conductor means of substantially coil shape concentrated in said regions of said magnetic field and spaced from each said planar pole face, said electric conductor means being substantially flat and positioned substantially parallel to magnetic flux lines of said magnetic field transversing said electric conductor means; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting said magnetized member, said diaphragm and said electric conductor means.
Claim 8
Dependent Claim
161 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having at least one substantially planar pole face; pole pieces of magnetically conductive material positioned adjacent the periphery of said magnetized member for forming elongated regions of relatively high flux density in said magnetic field; at least one electric conductor means of substantially coil shape concentrated in said regions of said magnetic field and spaced from each said planar pole face, said electric conductor means being substantially flat and positioned substantially parallel to magnetic flux lines of said magnetic field transversing said electric conductor means; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting said magnetized member, said diaphragm and said electric conductor means.
Claim 9
Dependent Claim
176 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having at least one substantially planar pole face; pole pieces of magnetically conductive material positioned adjacent the periphery of said magnetized member for forming elongated regions of relatively high flux density in said magnetic field; at least one electric conductor means of substantially coil shape concentrated in said regions of said magnetic field and spaced from each said planar pole face, said electric conductor means being formed of conductive pathway patterns; magnetically conductive material is interlaid with and insulated from said electric conductor means to be traversed with magnetic flux lines of said magnetic fields traversing said electric conductor means; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting said magnetized member, said diaphragm and said electric conductor means.
Claim 10
Dependent Claim
176 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having at least one substantially planar pole face; pole pieces of magnetically conductive material positioned adjacent the periphery of said magnetized member for forming elongated regions of relatively high flux density in said magnetic field; at least one electric conductor means of substantially coil shape concentrated in said regions of said magnetic field and spaced from each said planar pole face, said electric conductor means being formed of conductive pathway patterns; magnetically conductive material is interlaid with and insulated from said electric conductor means to be traversed with magnetic flux lines of said magnetic fields traversing said electric conductor means; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from at least one said planar pole face, and capable of radiating reproduced sound into an ambience in a direction away from said magnetized member and said pole pieces; and means for supporting said magnetized member, said diaphragm and said electric conductor means.
Claim 11
Dependent Claim
97 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having two substantially planar pole faces substantially parallel and conjugate to each other; at least one electric conductor means of substantially coil shape positioned substantially parallel to and spaced from each said planar pole face; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from each said planar pole face; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 12
Dependent Claim
97 words
A planar acoustic transducer comprising: at least one magnetized member for creating at least one magnetic field, each magnetized member having two substantially planar pole faces substantially parallel and conjugate to each other; at least one electric conductor means of substantially coil shape positioned substantially parallel to and spaced from each said planar pole face; at least one diaphragm operably attached to each said electric conductor means and positioned substantially parallel to and spaced from each said planar pole face; and means for supporting each said magnetized member, each said diaphragm and each said electric conductor means.
Claim 13
Dependent Claim
35 words
A planar acoustic transducer as claimed in claim 6 wherein in addition: at least one enclosure means substantially encloses the volume contained between the diaphragms spaced from the planar pole faces of each magnetized member.
Claim 14
Dependent Claim
36 words
A planar acoustic transducer as claimed in claim 6 wherein: said electric conductor means spaced from the planar pole faces of each magnetized member are positioned substantially symmetrically about the center lines of said magnetized member.
Claim 15
Dependent Claim
55 words
A planar acoustic transducer as claimed in claim 6 wherein in addition: pole pieces of magnetically conductive material are positioned adjacent at least one said magnetized member to form elongated regions of relatively high flux density in at least one magnetic field; and at least one said conductor means is positioned in said elongated regions.
Claim 16
Dependent Claim
39 words
A planar acoustic transducer as claimed in claim 6 wherein: each said diaphragm and said electric conductor means is supported by essentially non-magnetizable and resilient material positioned between said pole faces of each said magnetized membeR and said diaphragms.
Claim 17
Dependent Claim
20 words
A planar acoustic transducer as claimed in claim 6 wherein: each said diaphragm is made of at least one membrane.
Claim 18
Dependent Claim
20 words
A planar acoustic transducer as claimed in claim 6 wherein: each said conductor means is made of conductive pathway patterns.
Claim 19
Dependent Claim
38 words
A planar acoustic transducer as claimed in claim 6 wherein: magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing through said electric conductor means.
Claim 20
Dependent Claim
126 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field; a first pole piece of magnetically conductive material adjoining a pole face of said magnetized member; a second pole piece of substantially U-shape adjoining the conjugate pole face of said magnetized member and forming pairs of spaced apart elongated gaps with said first pole piece, said gaps containing regions of relatively high flux density in said magnetic field; electric conductor means of substantially coil shape positioned at least partially in said gaps and substantially parallel to magnetic flux lines of said magnetic fields in said gaps; a planar diaphragm operably attached to said electric conductor means; and means for supporting said magnetized member, said pole pieces, said diaphragm and said electric conductor means.
Claim 21
Dependent Claim
126 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field; a first pole piece of magnetically conductive material adjoining a pole face of said magnetized member; a second pole piece of substantially U-shape adjoining the conjugate pole face of said magnetized member and forming pairs of spaced apart elongated gaps with said first pole piece, said gaps containing regions of relatively high flux density in said magnetic field; electric conductor means of substantially coil shape positioned at least partially in said gaps and substantially parallel to magnetic flux lines of said magnetic fields in said gaps; a planar diaphragm operably attached to said electric conductor means; and means for supporting said magnetized member, said pole pieces, said diaphragm and said electric conductor means.
Claim 22
Dependent Claim
38 words
A planar acoustic transducer as claimed in claim 14 wherein: magnetically conductive material is interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing through said electric conductor means.
Claim 23
Dependent Claim
102 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field; pole pieces positioned adjacent the periphery of the magnetized member to form pairs of spaced apart elongated gaps with said magnetized member, said gaps containing regions of relatively high flux density of said magnetic field; at least one electric conductor means of substantially coil shape positioned at least partially in said gaps, each said conductor means being made of conductive pathway patterns; a planar diaphragm operably attached to each said electric conductor means; and means for supporting said magnetized member, each said diaphragm and each said electric conductor means.
Claim 24
Dependent Claim
102 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field; pole pieces positioned adjacent the periphery of the magnetized member to form pairs of spaced apart elongated gaps with said magnetized member, said gaps containing regions of relatively high flux density of said magnetic field; at least one electric conductor means of substantially coil shape positioned at least partially in said gaps, each said conductor means being made of conductive pathway patterns; a planar diaphragm operably attached to each said electric conductor means; and means for supporting said magnetized member, each said diaphragm and each said electric conductor means.
Claim 25
Dependent Claim
38 words
A planar acoustic transducer as claimed in claim 16 wherein: magnetically conductive material is interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing through said electric conductor means.
Claim 26
Dependent Claim
117 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having a periphery; pole pieces positioned adjacent the periphery of the magnetized member to form pairs of spaced apart elongated gaps with said magnetized member, said gaps containing regions of relatively high flux density of said magnetic field; at least one electric conductor means of substantially coil shape positioned at least partially in said gaps, and substantially parallel to magnetic flux lines of said magnetic field in said gaps; at least two planar diaphragms substantially parallel to each other and operably attached to said electric conductor means; and means for supporting said magnetized member, each said diaphragm and each said electric conductor means.
Claim 27
Dependent Claim
117 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having a periphery; pole pieces positioned adjacent the periphery of the magnetized member to form pairs of spaced apart elongated gaps with said magnetized member, said gaps containing regions of relatively high flux density of said magnetic field; at least one electric conductor means of substantially coil shape positioned at least partially in said gaps, and substantially parallel to magnetic flux lines of said magnetic field in said gaps; at least two planar diaphragms substantially parallel to each other and operably attached to said electric conductor means; and means for supporting said magnetized member, each said diaphragm and each said electric conductor means.
Claim 28
Dependent Claim
118 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having a periphery; pole pieces of magnetically conductive material adjoining opposed pole faces of said magnetized member; pole pieces positioned adjacent the periphery of the magnetized member to form at least two pairs of spaced apart elongated gaps with said first mentioned pole pieces, said gaps containing regions of relatively high flux density in said magnetic field at least; at least two electric conductor means of substantially coil shape positioned at least partially in said gaps; a planar diaphragm operably attached tO each said electric conductor means; and means for supporting said magnetized member, said pole pieces, said diaphragms and said electric conductor means.
Claim 29
Dependent Claim
118 words
A planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having a periphery; pole pieces of magnetically conductive material adjoining opposed pole faces of said magnetized member; pole pieces positioned adjacent the periphery of the magnetized member to form at least two pairs of spaced apart elongated gaps with said first mentioned pole pieces, said gaps containing regions of relatively high flux density in said magnetic field at least; at least two electric conductor means of substantially coil shape positioned at least partially in said gaps; a planar diaphragm operably attached tO each said electric conductor means; and means for supporting said magnetized member, said pole pieces, said diaphragms and said electric conductor means.
Claim 30
Dependent Claim
29 words
A planar acoustic transducer as claimed in claim 19 wherein: said electric conductor means is positioned substantially parallel to magnetic flux lines of said magnetic field in said gaps.
Claim 31
Dependent Claim
29 words
A planar acoustic transducer as claimed in claim 19 wherein: said electric conductor means is positioned substantially perpendicular to magnetic flux lines of said magnetic field in said gaps.
Claim 32
Dependent Claim
38 words
A planar acoustic transducer as claimed in claim 19 wherein: magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing through said electric conductor means.
Claim 33
Dependent Claim
23 words
A planar acoustic transducer as claimed in claim 19 wherein: said electric conductor means are capable of being operated independent of each other.
Claim 34
Dependent Claim
20 words
A planar acoustic transducer as claimed in claim 19 wherein: said electric conductor means is comprised of conductive pathway patterns.
Claim 35
Dependent Claim
111 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field; a first pole piece of magnetically conductive material adjoining a pole face of said magnetized member; a second pole piece of substantially U-shape adjoining the opposite pole face of said magnetized member and forming pairs of spaced apart elongated gaps with said first pole pieces, said gaps containing regions of relatively high flux density in said magnetic field; electric conductor means of substantially coil shape positioned at least partially in said gaps and substantially parallel to magnetic flux lines of said magnetic field in said gaps; and means for supporting said electric conductor means.
Claim 36
Dependent Claim
111 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field; a first pole piece of magnetically conductive material adjoining a pole face of said magnetized member; a second pole piece of substantially U-shape adjoining the opposite pole face of said magnetized member and forming pairs of spaced apart elongated gaps with said first pole pieces, said gaps containing regions of relatively high flux density in said magnetic field; electric conductor means of substantially coil shape positioned at least partially in said gaps and substantially parallel to magnetic flux lines of said magnetic field in said gaps; and means for supporting said electric conductor means.
Claim 37
Dependent Claim
42 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 25 wherein: magnetically conductive material is interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing through said electric conductor means.
Claim 38
Dependent Claim
96 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having a periphery; pole piieces of magnetically conductive material adjoining opposed pole faces of said magnetized member; other pole pieces for forming at least two pairs of spaced apart elongated gaps with said first mentioned pole pieces, said gaps containing regions of relatively high flux density in said magnetic field; and an electric conductor means of substantially coil shape positioned at least partially in one pair of said gaps, and means for supporting each said electric conductor means.
Claim 39
Dependent Claim
96 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field and having a periphery; pole piieces of magnetically conductive material adjoining opposed pole faces of said magnetized member; other pole pieces for forming at least two pairs of spaced apart elongated gaps with said first mentioned pole pieces, said gaps containing regions of relatively high flux density in said magnetic field; and an electric conductor means of substantially coil shape positioned at least partially in one pair of said gaps, and means for supporting each said electric conductor means.
Claim 40
Dependent Claim
33 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 27 wherein: said electric conductor means is positioned substantially parallel to magnetic flux lines of said magnetic field in said gaps.
Claim 41
Dependent Claim
33 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 27 wherein: said electric conductor means is positioned substantially perpendicular to magnetic flux lines of said magnetic field in said gaps.
Claim 42
Dependent Claim
42 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 27 wherein: magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic field traversing through said electric conductor means.
Claim 43
Dependent Claim
26 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 27 wherein: one said electric conductor means is positioned in each pair of gaps.
Claim 44
Dependent Claim
24 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 27 wherein: said electric conductor means is made of conductive pathway patterns.
Claim 45
Dependent Claim
37 words
Electromagnetic driving means for a planar acoustic transducer as claimed in claim 27 wherein: each said electric conductor means is supported by essentially non-magnetized and resilient material positioned between said magnetized member and said electric conductor means.
Claim 46
Dependent Claim
119 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field; pole pieces positioned adjacent the periphery for forming at least one pair of spaced apart elongated gaps with said magnetized member; said gaps containing regions of relatively high flux density; an electric conductor means of substantially coil shape positioned at least partially in each pair of said gaps and substantially parallel to magnetic flux lines of said magnetic field in said gaps; magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing said electric conductor means; and means for supporting said electric conductor means and said magnetically conductive material.
Claim 47
Dependent Claim
119 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field; pole pieces positioned adjacent the periphery for forming at least one pair of spaced apart elongated gaps with said magnetized member; said gaps containing regions of relatively high flux density; an electric conductor means of substantially coil shape positioned at least partially in each pair of said gaps and substantially parallel to magnetic flux lines of said magnetic field in said gaps; magnetically conductive material being interlaid with and insulated from said electric conductor means to increase magnetic flux lines of said magnetic fields traversing said electric conductor means; and means for supporting said electric conductor means and said magnetically conductive material.
Claim 48
Dependent Claim
103 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field; pole pieces positioned adjacent the periphery for forming at least one pair of spaced apart elongated gaps with said magnetized member; said gaps containing regions of relatively high flux density; an electric conductor means of substantially coil shape positioned at least partially in each pair of said gaps and substantially parallel to magnetic flux lines of said magnetic field in said gaps; and means for supporting said electric conductor means by essentially non-magnetized and resilient material positioned between said magnetized member and said electric conductor means.
Claim 49
Dependent Claim
103 words
Electromagnetic driving means for a planar acoustic transducer comprising: a magnetized member for creating a magnetic field; pole pieces positioned adjacent the periphery for forming at least one pair of spaced apart elongated gaps with said magnetized member; said gaps containing regions of relatively high flux density; an electric conductor means of substantially coil shape positioned at least partially in each pair of said gaps and substantially parallel to magnetic flux lines of said magnetic field in said gaps; and means for supporting said electric conductor means by essentially non-magnetized and resilient material positioned between said magnetized member and said electric conductor means.
Claim 50
Dependent Claim
77 words
An acoustic transducer comprising: at least one electromagnetic driving means; and at least one diaphragm operably attached to each said electromagnetic driving means and driven over a substantially large portion of its surface area by said electromagnetic driving means, each diaphragm being comprised of at least two membranes fastened adjacent their periphery and internally separated by strut members to a shallow lenticular form, whereby the two membranes operate as a low mass, highly responsive single diaphragm unit.
Claim 51
Dependent Claim
77 words
An acoustic transducer comprising: at least one electromagnetic driving means; and at least one diaphragm operably attached to each said electromagnetic driving means and driven over a substantially large portion of its surface area by said electromagnetic driving means, each diaphragm being comprised of at least two membranes fastened adjacent their periphery and internally separated by strut members to a shallow lenticular form, whereby the two membranes operate as a low mass, highly responsive single diaphragm unit.
Claim 52
Dependent Claim
20 words
An acoustic transducer as claimed in claim 36 wherein: said membranes are fastened at intermediate points over their surface area.
Claim 53
Dependent Claim
73 words
An acoustic transducer comprising: at least one electromagnetic driving means; and at least one diaphragm operably attached to each said electromagnetic driving means and driven over a substantially large portion of its surface area by said electromagnetic driving means, each diaphragm being comprised of at least two membranes substantially sealed adjacent their periphery and separated by internal inflation to a shallow lenticular form, whereby the two membranes operate as a single diaphragm unit.
Claim 54
Dependent Claim
73 words
An acoustic transducer comprising: at least one electromagnetic driving means; and at least one diaphragm operably attached to each said electromagnetic driving means and driven over a substantially large portion of its surface area by said electromagnetic driving means, each diaphragm being comprised of at least two membranes substantially sealed adjacent their periphery and separated by internal inflation to a shallow lenticular form, whereby the two membranes operate as a single diaphragm unit.
Claim 55
Dependent Claim
20 words
An acoustic transducer as claimed in claim 38 wherein: said membranes are fastened at intermediate points over their surface area.
Claim 56
Dependent Claim
43 words
A diaphragm for an acoustic transducer comprising: at least two membranes fastened adjacent their periphery; and internal strut members capable of separating said membranes to a shallow lenticular form, whereby the two membranes operate as a low mass, highly responsive single diaphragm unit.
Claim 57
Dependent Claim
43 words
A diaphragm for an acoustic transducer comprising: at least two membranes fastened adjacent their periphery; and internal strut members capable of separating said membranes to a shallow lenticular form, whereby the two membranes operate as a low mass, highly responsive single diaphragm unit.
Claim 58
Dependent Claim
23 words
A diaphragm for an acoustic transducer as claimed in claim 40 wherein: said membranes are fastened at intermediate points over their surface area.
Claim 59
Dependent Claim
55 words
A diaphragm for an acoustic transducer comprising: at least two membranes fastened adjacent their periphery and capable of being internally inflated by pressure, and internal strut members capable of separating said membranes with said internal inflation to a shallow lenticular form, whereby the two membranes operate as a low mass, highly responsive single diaphragm unit.
Claim 60
Dependent Claim
55 words
A diaphragm for an acoustic transducer comprising: at least two membranes fastened adjacent their periphery and capable of being internally inflated by pressure, and internal strut members capable of separating said membranes with said internal inflation to a shallow lenticular form, whereby the two membranes operate as a low mass, highly responsive single diaphragm unit.
Claim 61
Dependent Claim
37 words
A diaphragm for an acoustic transducer comprising: at least two membranes substantially sealed adjacent their periphery and capable of being internally inflatEd to a shallow lenticular form, whereby the two membranes operate as a single diaphragm unit.
Claim 62
Dependent Claim
37 words
A diaphragm for an acoustic transducer comprising: at least two membranes substantially sealed adjacent their periphery and capable of being internally inflatEd to a shallow lenticular form, whereby the two membranes operate as a single diaphragm unit.
Claim 63
Dependent Claim
23 words
A diaphragm for an acoustic transducer as claimed in claim 43 wherein: said membranes are fastened at intermediate points over their surface area.
Claim 64
Dependent Claim
64 words
An acoustic transducer comprising: at least one electromagnetic driving means, said electromagnetic means providing at least two independent electric conductor means; and at least one pair of substantially planar diaphragms positioned in substantially parallel array astride said electromagnetic driving means, each said diaphragm of said pair of diaphragms being operably attached for driving by an independent electric conductor means of said electromagnetic driving means.
Claim 65
Dependent Claim
64 words
An acoustic transducer comprising: at least one electromagnetic driving means, said electromagnetic means providing at least two independent electric conductor means; and at least one pair of substantially planar diaphragms positioned in substantially parallel array astride said electromagnetic driving means, each said diaphragm of said pair of diaphragms being operably attached for driving by an independent electric conductor means of said electromagnetic driving means.
Claim 66
Dependent Claim
33 words
An acoustic transducer as claimed in claim 45 comprising in addition: at least one enclosure means substantially separating the volume contained between at least one said pair of diaphragms from an exterior ambience.
Claim 67
Dependent Claim
87 words
An acoustic transducer comprising: at least one electromagnetic driving means; and at least one pair of substantially planar diaphragms operably attached to said electromagnetic driving means, each diaphragm of each pair of diaphragms being positioned substantially parallel to the other diaphragm of said pair of diaphragms and one of said diaphragms of each said pair of diaphragms being stiffened with at least one patch member capable of mechanically shifting the response of said diaphragm from the phase response of the other diaphragm of said pair of diaphragms.
Claim 68
Dependent Claim
87 words
An acoustic transducer comprising: at least one electromagnetic driving means; and at least one pair of substantially planar diaphragms operably attached to said electromagnetic driving means, each diaphragm of each pair of diaphragms being positioned substantially parallel to the other diaphragm of said pair of diaphragms and one of said diaphragms of each said pair of diaphragms being stiffened with at least one patch member capable of mechanically shifting the response of said diaphragm from the phase response of the other diaphragm of said pair of diaphragms.
Claim 69
Dependent Claim
29 words
An acoustic transducer as claimed in claim 47 wherein: each said patch member is in addition a conductor forming means of electric driver means of said electromagnetic driving means.
Claim 70
Independent Claim
47 words
A method of reproducing a stereophonic audio signal comprising the steps of: forming a pair of diaphragms, each diaphragm of said pair being substantially parallel to the other diaphragm of said pair; and driving said diaphragms of said pair by separate channels of said stereophonic audio signal.
Claim 71
Independent Claim
47 words
A method of reproducing a stereophonic audio signal comprising the steps of: forming a pair of diaphragms, each diaphragm of said pair being substantially parallel to the other diaphragm of said pair; and driving said diaphragms of said pair by separate channels of said stereophonic audio signal.
Claim 72
Dependent Claim
40 words
An acoustic transducer adapted for mounting on a wall comprising: at least one electromagnetic driving means and; at least three substantially planar diaphragms, each operably attached for driving by said electromagnetic driving means, and positioned substantially parallel to each other.
Claim 73
Dependent Claim
40 words
An acoustic transducer adapted for mounting on a wall comprising: at least one electromagnetic driving means and; at least three substantially planar diaphragms, each operably attached for driving by said electromagnetic driving means, and positioned substantially parallel to each other.
Claim 74
Dependent Claim
35 words
An acoustic transducer adapted for mounting on a wall as claimed in claim 50 wherein: each said diaphragm is made of at least one membrane and the diaphragms are spaced substantially equidistant from each other.
Claim 75
Independent Claim
87 words
A method of reproducing an audio signal comprising the steps of: forming a plurality of spaced pairs of planar diaphragms with the volume contained between each pair of diaphragms substantially enclosed with each diaphragm of said pair substantially parallel to the other diaphragm of said pair; driving at least one of said pairs of diaphragms with said diaphragms motionally in-phase with low frequency audio signals; and driving at least one of said pairs of diagrams with said diaphragms motionally out-of-phase with middle and high frequency audio signals.
Claim 76
Independent Claim
87 words
A method of reproducing an audio signal comprising the steps of: forming a plurality of spaced pairs of planar diaphragms with the volume contained between each pair of diaphragms substantially enclosed with each diaphragm of said pair substantially parallel to the other diaphragm of said pair; driving at least one of said pairs of diaphragms with said diaphragms motionally in-phase with low frequency audio signals; and driving at least one of said pairs of diagrams with said diaphragms motionally out-of-phase with middle and high frequency audio signals.
Claim 77
Dependent Claim
49 words
An electric driver means for a planar acoustic transducer comprising: sections of insulating backing of non-magnetically conductive material; and sections of conductive pathway pattern fixed to said sections of insulating backing and capable of being formed round the periphery of a magnetized member in a singular electric driver means.
Claim 78
Dependent Claim
49 words
An electric driver means for a planar acoustic transducer comprising: sections of insulating backing of non-magnetically conductive material; and sections of conductive pathway pattern fixed to said sections of insulating backing and capable of being formed round the periphery of a magnetized member in a singular electric driver means.
Claim 79
Dependent Claim
28 words
An electric driver means for a planar acoustic transducer as claimed in claim 53 wherein: each said section of conductive pathway pattern is in substantially spiral coil shape.
Claim 80
Dependent Claim
37 words
An electric driver means for a planar acoustic transducer as claimed in claim 53 wherein: said sections of insulating backing are in one contiguous piece and are capable of being formed into a singular electric driver means.
Claim 81
Independent Claim
92 words
A method of making a planar acoustic transducer comprising the steps of: adjoining pole pieces to opposed pole faces of a magnetized member having at leasT one substantially planar pole face; forming substantially spiral coil electric conductor means of a conductive pathway pattern; forming said electric conductor means round the periphery of said magnetized member and spaced from said magnetized member; positioning other pole pieces spaced from said electric conductor means and forming gaps with said first mentioned pole pieces; and operably attaching at least one diaphragm to said electric conductor means.
Claim 82
Independent Claim
92 words
A method of making a planar acoustic transducer comprising the steps of: adjoining pole pieces to opposed pole faces of a magnetized member having at leasT one substantially planar pole face; forming substantially spiral coil electric conductor means of a conductive pathway pattern; forming said electric conductor means round the periphery of said magnetized member and spaced from said magnetized member; positioning other pole pieces spaced from said electric conductor means and forming gaps with said first mentioned pole pieces; and operably attaching at least one diaphragm to said electric conductor means.
Claim 83
Dependent Claim
45 words
A method of making a planar acoustic transducer as claimed in claim 56 comprising the additional step of: positioning spacers of non-magnetically conductive material through said electric conductor means to adjoin said magnetized member; and said other pole pieces are positioned by adjoining said spacers.
Claim 84
Dependent Claim
55 words
A method of making a planar acoustic transducer as claimed in claim 56 comprising the additional step of: interlaying magnetically conductive material with and insulating said magnetically conductive material from said electric conductor means to increase magnetic flux lines of a magnetic field created by said magnetized member and traversing through said electric conductor means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |