US5262229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive releasable adhesive and method of making same
Assignee: Columbia Insurance Co
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Filing: 1991-11-04
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Granted: 1993-11-16
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Expires: 2011-11-04
Abstract
Abstract A conductive releasable adhesive and method of making same for electrostatic discharge controlled surfaces in which a multiplicity of interlacing electrically conductive fibers is suspended in a releasable adhesional substance forming a conductive matrix throughout the volume of the adhesional substance for facilitating dissipation of electrical charges.
Inventors
- 👤 Bruce G. Lampert
- 👤 William Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:36
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4242; D04H1/4282; D04H1/4291; D04H1/4326; D04H1/4334; D04H1/4382; D04H1/43825; D04H1/43828; C08; C08L; C08L2666/00; C08L2666/54; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/321; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/28; Y10T428/2804; Y10T428/2852; Y10T428/2857
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
64 words
A conductive releasable adhesive for electrostatic discharge controlled surfaces comprising: a spreadable, releasable adhesional substance for dispersion between an electrostatic discharge controlled surface and a support surface; and a multiplicity of interlacing electrically conductive fibers suspended in said adhesional substance forming a conductive matrix throughout the volume of the adhesional substance for dissipating charges which come into contact with the electrostatic discharge controlled surface.
Claim 2
Dependent Claim
64 words
A conductive releasable adhesive for electrostatic discharge controlled surfaces comprising: a spreadable, releasable adhesional substance for dispersion between an electrostatic discharge controlled surface and a support surface; and a multiplicity of interlacing electrically conductive fibers suspended in said adhesional substance forming a conductive matrix throughout the volume of the adhesional substance for dissipating charges which come into contact with the electrostatic discharge controlled surface.
Claim 3
Dependent Claim
19 words
The adhesive of claim 1 in which said releasable adhesional substance is a pressure sensitive acrylic polymer aqueous emulsion.
Claim 4
Dependent Claim
20 words
The adhesive of claim 1 in which said fibers comprise from 0.1 to 10 percent of the adhesive by weight.
Claim 5
Dependent Claim
28 words
The adhesive of claim 1 in which fibers are inert with respect to said adhesional substance not adversely affecting the tackiness or adhesive strength of said adhesional substance.
Claim 6
Dependent Claim
17 words
The adhesive of claim 1 in which said fibers are acrylic fibers conductively coated with copper sulfide.
Claim 7
Dependent Claim
15 words
The adhesive of claim 1 in which said fibers are carbon coated nylon conductive fibers.
Claim 8
Dependent Claim
15 words
The adhesive of claim 1 in which said fibers are carbon coated acrylic conductive fibers.
Claim 9
Dependent Claim
15 words
The adhesive of claim 1 in which said fibers are carbon coated polypropylene conductive fibers.
Claim 10
Dependent Claim
18 words
The adhesive of claim 1 in which said fibers have a Denier value of between 0.5 and 25.
Claim 11
Dependent Claim
17 words
The adhesive of claim 1 in which said fibers have diameter of between 0.0005 to 0.0025 inches.
Claim 12
Dependent Claim
18 words
The adhesive of claim 1 in which said fibers have a length of between 0.5 to 15 mm.
Claim 13
Dependent Claim
20 words
The adhesive of claim 1 in which said conductive matrix has a maximum surface electrical resistance of 2×10 7 ohms.
Claim 14
Independent Claim
61 words
A method of making a conductive releasable adhesive for electrostatic discharge controlled surfaces comprising: providing a spreadable, releasable adhesional substance for releasably securing electrostatic discharge controlled surfaces to a support surface; and mixing said adhesional substance with a multiplicity of conductive fibers to suspend said fibers in said adhesional substance forming a conductive matrix throughout the volume of the adhesional substance.
Claim 15
Independent Claim
61 words
A method of making a conductive releasable adhesive for electrostatic discharge controlled surfaces comprising: providing a spreadable, releasable adhesional substance for releasably securing electrostatic discharge controlled surfaces to a support surface; and mixing said adhesional substance with a multiplicity of conductive fibers to suspend said fibers in said adhesional substance forming a conductive matrix throughout the volume of the adhesional substance.
Claim 16
Dependent Claim
19 words
The method of claim 13 in which said releasable adhesional substance is a pressure sensitive acrylic polymer aqueous emulsion.
Claim 17
Dependent Claim
19 words
The method of claim 13 in which said fibers comprise from 0.1 to 10% of the adhesive by weight.
Claim 18
Dependent Claim
17 words
The method of claim 13 in which said fibers are acrylic fibers conductively coated with copper sulfide.
Claim 19
Dependent Claim
15 words
The method of claim 13 in which said fibers are carbon coated nylon conductive fibers.
Claim 20
Dependent Claim
15 words
The method of claim 13 in which said fibers are carbon coated acrylic conductive fibers.
Claim 21
Dependent Claim
15 words
The method of claim 13 in which said fibers are carbon coated polypropylene conductive fibers.
Claim 22
Dependent Claim
18 words
The method of claim 13 in which said fibers have a Denier value of between 0.5 and 25.
Claim 23
Dependent Claim
18 words
The method of claim 13 in which said fibers have a diameter of between 0.0005 to 0.0025 inches.
Claim 24
Dependent Claim
17 words
The method of claim 13 in which said fibers have a length between 0.5 to 15 mm.
Claim 25
Dependent Claim
17 words
The method of claim 13 in which said mixing is accomplished by means of a ribbon blender.
Claim 26
Dependent Claim
28 words
The method of claim 13 in which said fibers are inert with respect to said adhesional substance not adversely affecting the tackiness adhesive strength of said adhesional substance.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |