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EP0275171A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

A gasket for E.M.I. shielding and for sealing

Assignee: Raychem Corp
•
Filing: 1988-01-12
•
Granted: —
•
Expires: 2008-01-12
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Abstract

Abstract This invention provides E.M.I. gaskets for electrically shielding and environmentally sealing the space between two surfaces which comprises a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and/or providing electrical shielding in the space between said surfaces; and a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10⁻¹mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide environmental seal between said surfaces and to provide environmental pro­tection for said metallic structure. The gel may encap­sulate the entire metallic structure so that portions of the metallic structure pierces through the gel when the gasket is installed to make electrical contact. Alternatively por­tions of the metallic structure may extend beyond the sur­face of the gel and the gel deforms to cover exposed portions of the metallic structure when the gasket is installed. The gasket of this invention provides moisture seal and is resistant to corrosion.

Inventors

  • 👤 Robert S. Dubrow
  • 👤 Randolph W. Chan
  • 👤 Christine J. Holland

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 14:11
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 95 words
A gasket for electrically shielding against E.M.I. and environmentally sealing the space between two surfaces comprising: (a) an electrically conductive component adapted for forming electrical contact with said surfaces and for providing electrical shielding in the space between said surfaces; and (b) a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10⁻¹mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide environmental seal between said surfaces and to provide environmental protection said conductive component.
Claim 2
Dependent Claim 95 words
A gasket for electrically shielding against E.M.I. and environmentally sealing the space between two surfaces comprising: (a) an electrically conductive component adapted for forming electrical contact with said surfaces and for providing electrical shielding in the space between said surfaces; and (b) a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10⁻¹mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide environmental seal between said surfaces and to provide environmental protection said conductive component.
Claim 3
Dependent Claim 41 words
A gasket according to claim 1, wherein the gel material covers the component and the component is adapted and positioned such that portions thereof pierce through the gel material and contact the surfaces when the gasket is compressed between the surfaces.
Claim 4
Dependent Claim 58 words
A gasket according to claim 1, wherein at least a portion of the component is positioned and exposed outside the gel material and the gel material is positioned so as to deform into sealing contact with the surfaces and deform around the component to seal exposed portions of the component when the gasket is compressed between the surfaces.
Claim 5
Dependent Claim 21 words
A gasket according to any one of claims 1 to 3, in which the conductive component is formed from a metal.
Claim 6
Dependent Claim 18 words
A gasket according to any one of claims 1 to 4, in which the conductive component is deformable.
Claim 7
Independent Claim 55 words
A method of providing E.M.I. shielding and an environmental seal between two surfaces by positioning a gasket as claimed in any one of claims 1 to 5 between said two surfaces and compressing said gasket between said surfaces to deform the gel material and to establish electrical contact between the conductive component and said surfaces.
Claim 8
Dependent Claim 22 words
An assembly comprising two surfaces and a gasket as claimed in any one of claims 1 to 5 compressed between said surfaces.

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