Patent US4652540A successfully refreshed from Google Patents.
Patent US4681497A successfully refreshed from Google Patents.
US4681497A
Expired / Lapsed
US
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Encapsulated fastener
Assignee: KAYNAR TECHNOLOGIES Inc A DE CORP
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Filing: 1985-05-29
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Granted: 1987-07-21
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Expires: 2005-05-29
Abstract
Abstract An encapsulated metal bolt comprises a head portion having an encapsulating cap thereon with a plurality of conductive fibers therein electrically isolated from the head but electrically exposed to the surface of a complementary aperture.
Inventors
- 👤 Imre Berecz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:17
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02; B; B29; B29C; B29C70/00; B29C70/68; B29C70/86; B29C70/88; B29C70/882; B29C70/885; B29D; B29D1/00; B64; B64D; B64D45/00; B64D45/02; F; F16; F16B; F16B33/00; F16B33/004; F16B37/00; F16B37/14; B29K; B29K2995/00; B29K2995/0003; B29K2995/0005; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/902; Y10S411/903; Y10S411/904; Y10S411/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
An encapsulated fastener for introduction through an aperture in a workpiece having conductive fibers therein, said fastener comprising a metal bolt having a head portion at one end, a threaded portion at the other end, and a shank between said head and end portions, and a plastic cap encapsulating the head portion of said bolt having a plurality of resin encapsulated electrically conductive fibers therein, said electrically conductive fibers being substantially electrically isolated from said metal bolt by the plastic resin of said cap, the radially outer periphery of said plastic cap being abraided to enhance electrical connection between the conductive fibers thereof and the conductive fibers of said workpiece intersecting the periphery of the aperture in said workpiece whereby electrical continuity is provided by the cap on said bolt across the aperture in said workpiece.
Claim 2
Dependent Claim
136 words
An encapsulated fastener for introduction through an aperture in a workpiece having conductive fibers therein, said fastener comprising a metal bolt having a head portion at one end, a threaded portion at the other end, and a shank between said head and end portions, and a plastic cap encapsulating the head portion of said bolt having a plurality of resin encapsulated electrically conductive fibers therein, said electrically conductive fibers being substantially electrically isolated from said metal bolt by the plastic resin of said cap, the radially outer periphery of said plastic cap being abraided to enhance electrical connection between the conductive fibers thereof and the conductive fibers of said workpiece intersecting the periphery of the aperture in said workpiece whereby electrical continuity is provided by the cap on said bolt across the aperture in said workpiece.
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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) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |