US5087057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical cut seal
Assignee: Charleron Enterprises Inc
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Filing: 1990-01-19
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Granted: 1992-02-11
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Expires: 2010-01-19
Abstract
Abstract A ring seal has a radial cut, so that the ring seal may be transversely installed over a coaxial element. The cut extends radially and circumferentially to provide cut surfaces that overlap in intimate contact and maintain intimate contact to inhibit leakage between the cut surfaces when the ring seal radially expands. The cut surfaces are helicoid, each characterized by a radial generatrix that is constantly perpendicular to the axis of the seal. A method and apparatus are disclosed for making a ring seal having helical cut surfaces.
Inventors
- 👤 Ronald C. Kurkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3272; F05; F05C; F05C2225/00; F05C2225/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A ring seal having an axis, an inner diameter about said axis, an outer diameter about said axis, a thickness between said inner and outer diameter, and a depth extending parallel to said axis, said ring seal comprising mating surfaces extending between said diameters and across said depth, said surfaces each being a helicoid characterized by a radial generatrix that is constantly perpendicular to said axis over a sector of said seal between said inner and outer diameters.
Claim 2
Dependent Claim
78 words
A ring seal having an axis, an inner diameter about said axis, an outer diameter about said axis, a thickness between said inner and outer diameter, and a depth extending parallel to said axis, said ring seal comprising mating surfaces extending between said diameters and across said depth, said surfaces each being a helicoid characterized by a radial generatrix that is constantly perpendicular to said axis over a sector of said seal between said inner and outer diameters.
References Cited (Backward Citations)
US164444A
Cited
US1702294A
Cited
FR1212514A
Cited
US3455565A
Cited
US3588125A
Cited
US3655208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |