US3690684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaskets
Assignee: SOC CHIMIQUE DE GERLAND
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Filing: 1970-10-27
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Granted: 1972-09-12
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Expires: 1990-10-27
Abstract
Abstract A gasket insertable in a pipe joint has a toroidal body with three circular grooves of concave profile centered on the body axis and separated by broad annular ribs of convex profile curved about its centerline.
Inventors
- 👤 Rene Lansaque
- 👤 Georges Bonnefond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:05
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/025; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/06; F16J15/064; Y; Y10; Y10S; Y10S285/00; Y10S285/918
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
53 words
A sealing gasket for a pipe joint, comprising a toroidal body of flexible material formed with three circular grooves centered on the axis of said body and paralleling the centerline thereof, said grooves being angularly equispaced about said centerline and being separated by broad annular ribs of convex cross-section curved about said centerline.
Claim 2
Dependent Claim
53 words
A sealing gasket for a pipe joint, comprising a toroidal body of flexible material formed with three circular grooves centered on the axis of said body and paralleling the centerline thereof, said grooves being angularly equispaced about said centerline and being separated by broad annular ribs of convex cross-section curved about said centerline.
Claim 3
Dependent Claim
26 words
A gasket as defined in claim 1 wherein said grooves are concave in cross-section and span arcs exceeding those spanned by the cross-sections of said ribs.
References Cited (Backward Citations)
NL6410255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |