US3713463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure member for pipes and the like
Assignee: Individual
•
Filing: 1970-12-24
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Granted: 1973-01-30
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Expires: 1990-12-24
Abstract
Abstract A closure member for pipes, conduits, etc. is disclosed which comprises a cylindrical cap of rubber or other elastomeric material, the cap being closed at one end and having inwardly and circumferentially extending ridges around the inner periphery of its skirt to engage the outer periphery of the pipe. A clamp surrounds the skirt and is adapted to constrict the skirt against the pipe to seal the latter.
Inventors
- 👤 J Bywater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:49
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/115
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A closure member for a pipe, conduit or the like comprising a cap of elastomeric material, said cap having a cylindrical skirt and an end wall closing one end of said skirt, said skirt having at least one inwardly and circumferentially extending ridge around the inner periphery thereof, said ridge being adapted to frictionally engage the outer periphery of a said pipe when fitting said cap over said pipe, a substantially rigid disc within said skirt and engageable with said end wall, said disc being of a material having greater stiffness than said elastomeric material, said disc having a diameter at least substantially equal to the inner diameter of said skirt and greater than the internal diameter of said ridge, and clamp means surrounding said skirt over said ridge and adapted to constrict said skirt against said outer periphery of said pipe.
Claim 2
Dependent Claim
142 words
A closure member for a pipe, conduit or the like comprising a cap of elastomeric material, said cap having a cylindrical skirt and an end wall closing one end of said skirt, said skirt having at least one inwardly and circumferentially extending ridge around the inner periphery thereof, said ridge being adapted to frictionally engage the outer periphery of a said pipe when fitting said cap over said pipe, a substantially rigid disc within said skirt and engageable with said end wall, said disc being of a material having greater stiffness than said elastomeric material, said disc having a diameter at least substantially equal to the inner diameter of said skirt and greater than the internal diameter of said ridge, and clamp means surrounding said skirt over said ridge and adapted to constrict said skirt against said outer periphery of said pipe.
Claim 3
Dependent Claim
142 words
A closure member for a pipe, conduit or the like comprising a cap of elastomeric material, said cap having a cylindrical skirt and an end wall closing one end of said skirt, said skirt having at least one inwardly and circumferentially extending ridge around the inner periphery thereof, said ridge being adapted to frictionally engage the outer periphery of a said pipe when fitting said cap over said pipe, a substantially rigid disc within said skirt and engageable with said end wall, said disc being of a material having greater stiffness than said elastomeric material, said disc having a diameter at least substantially equal to the inner diameter of said skirt and greater than the internal diameter of said ridge, and clamp means surrounding said skirt over said ridge and adapted to constrict said skirt against said outer periphery of said pipe.
Claim 4
Dependent Claim
142 words
A closure member for a pipe, conduit or the like comprising a cap of elastomeric material, said cap having a cylindrical skirt and an end wall closing one end of said skirt, said skirt having at least one inwardly and circumferentially extending ridge around the inner periphery thereof, said ridge being adapted to frictionally engage the outer periphery of a said pipe when fitting said cap over said pipe, a substantially rigid disc within said skirt and engageable with said end wall, said disc being of a material having greater stiffness than said elastomeric material, said disc having a diameter at least substantially equal to the inner diameter of said skirt and greater than the internal diameter of said ridge, and clamp means surrounding said skirt over said ridge and adapted to constrict said skirt against said outer periphery of said pipe.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |