US4968854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual elastomer gasket shield for electronic equipment
Assignee: Vanguard Products Corp
•
Filing: 1988-11-10
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Granted: 1990-11-06
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Expires: 2008-11-10
Abstract
Abstract An improved gasket shielding for electronic equipment is provided in the form of an integral two-layer component, namely a support layer and a cover layer, the support being strong and having excellent physical properties, and the cover layer being metal filled and having excellent electrical energy attenuation properties.
Inventors
- 👤 Robert C. Benn, Sr.
- 👤 Robert C. Benn, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:40
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/108; F16J15/064; H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; Y; Y10; Y10S; Y10S277/00; Y10S277/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
58 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasiticity and high tear resistance, and a relatively thin elastomeric outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy.
Claim 2
Dependent Claim
58 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasiticity and high tear resistance, and a relatively thin elastomeric outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy.
Claim 3
Dependent Claim
13 words
A gasket shield according to claim 1, wherein said inner layer is conductive.
Claim 4
Dependent Claim
23 words
A gasket shield according to claim 1, wherein said inner layer is on the order of 10 times thicker than said outer layer.
Claim 5
Dependent Claim
21 words
A gasket shield according to claim 1 wherein said outer layer has a thickness of no greater than about 8 mils.
Claim 6
Dependent Claim
18 words
A gasket shield according to claim 3 wherein said inner and outer layers are formed of cross-linked rubber.
Claim 7
Dependent Claim
18 words
A gasket shield according to claim 1 wherein said inner and outer layers are formed of silicone rubber.
Claim 8
Dependent Claim
19 words
A gasket shield according to claim 6 wherein said inner layer comprises a non-conductive, fumed silica reinforced silicone rubber.
Claim 9
Dependent Claim
21 words
A gasket shield according to claim 6 wherein said inner layer comprises a conductive, carbon-black and fumed silica reinforced silicone rubber.
Claim 10
Dependent Claim
68 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasticity and high strength, and a relatively thin outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy, wherein said inner and outer layers are chemically bonded to one another.
Claim 11
Dependent Claim
68 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasticity and high strength, and a relatively thin outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy, wherein said inner and outer layers are chemically bonded to one another.
Claim 12
Dependent Claim
64 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasticity and high strength, and a relatively thin outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy, wherein said inner and outer layers are co-extruded.
Claim 13
Dependent Claim
64 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasticity and high strength, and a relatively thin outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy, wherein said inner and outer layers are co-extruded.
Claim 14
Dependent Claim
64 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasticity and high strength, and a relatively thin outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy, further comprising a metallic substrate chemically locked thereto.
Claim 15
Dependent Claim
64 words
In a gasket shield for counteracting electromagnetic interference comprising a flexible gasket element, the improvement wherein said gasket element comprises a relatively thick elastomeric inner layer of good elasticity and high strength, and a relatively thin outer layer integral therewith, said outer layer being metal filled and providing a high degree of attenuation of electrical energy, further comprising a metallic substrate chemically locked thereto.
Claim 16
Dependent Claim
52 words
A gasket shield for counteracting electromagnetic interference comprising a flexible gasket element having a relatively thick elastomeric inner layer of good elasticity and strength, formed of carbon-filled rubber, and a relatively thin outer layer integral therewith, said outer layer being metal-filled rubber and providing a high degree of attenuation of electrical energy.
Claim 17
Dependent Claim
52 words
A gasket shield for counteracting electromagnetic interference comprising a flexible gasket element having a relatively thick elastomeric inner layer of good elasticity and strength, formed of carbon-filled rubber, and a relatively thin outer layer integral therewith, said outer layer being metal-filled rubber and providing a high degree of attenuation of electrical energy.
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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) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |