US3595589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite gasket
Assignee: EIDP Inc
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Filing: 1969-08-26
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Granted: 1971-07-27
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Expires: 1989-08-26
Abstract
Abstract A composite gasket consisting essentially of a resilient core in the form of an annular ring and a seamless plastic jacket covering and closely fitting the inner periphery and adjacent faces of the core. The core can be formed by an outer annular ring and an inner annular split ring or, alternatively, by two equal semiannular rings.
Inventors
- 👤 Thomas Knight Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:54
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/122; F16J15/123; F16L; F16L23/00; F16L23/16; F16L23/18; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/944; Y10S277/945
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
39 words
A composite gasket, for use in connecting pipes, consisting essentially of (a) a resilient annular core member and (b) a jacket of a nonporous, plastic material covering and closely fitting the inner periphery and adjacent sides of the core.
Claim 2
Dependent Claim
39 words
A composite gasket, for use in connecting pipes, consisting essentially of (a) a resilient annular core member and (b) a jacket of a nonporous, plastic material covering and closely fitting the inner periphery and adjacent sides of the core.
Claim 3
Dependent Claim
56 words
A composite gasket of claim 1, for use in connecting pipes, consisting essentially of (a) a resilient annular core member and (b) a seamless jacket having a U-shaped cross section made of nonporous, plastic material covering and closely fitting the inner periphery and adjacent sides of the core thereby completely enveloping the core on three sides.
Claim 4
Dependent Claim
18 words
The composite gasket of claim 2, in which the core is divided into two substantially equal semiannular rings.
Claim 5
Dependent Claim
40 words
The composite gasket of claim 2 in which the core is formed by an outer annular ring and an inner annular split ring closely fitting between the inner periphery of the outer ring and the inner periphery of the jacket.
Claim 6
Dependent Claim
47 words
The composite gasket of claim 4 wherein (a) the outer annular ring is made of a metallic section having annular corrugations sandwiched between two sections of asbestos; (b) the inner annular split ring is made of asbestos; and (c) the jacket is made of fluorinated ethylene propylene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |