Patent US3669153A successfully refreshed from Google Patents.
US3669153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cap
Assignee: Individual
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Filing: 1969-09-29
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Granted: 1972-06-13
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Expires: 1989-09-29
Abstract
Abstract A device for capping a pipe, particularly for an underground pipe. This device serves to keep dirt, mud, water and the like from entering an underground pipe.
Inventors
- 👤 Cletus Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:30
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
269 words
A pipe cap for underground pipe comprising; a pair of sleeve members; one of said sleeve members having one end sized to match the inner and outer diameters of the pipe to be capped; the other of said sleeve members being sized to slide longitudinally with respect to the inner diameter of said one sleeve member; rod guide means in abutting relation to said other sleeve member; gasket means carried on one end of said one sleeve member adapted for abutting contact with the end of the pipe to be capped; threaded rod guide means carried on the other end of said one sleeve member with said other end of said one sleeve having an outer diameter of reduced size compared to said one end thereof; a rod having a compression member on one end thereof and being threaded on the other end thereof, said rod being adapted to extend loosely through the rod guide means of said other sleeve member and to extend through said threaded rod guide means of said one sleeve member in threadable engagement therewith and having an operative portion on said one end of said rod which protrudes exteriorly of said one sleeve member; an expansible annular ring having said rod freely extending through its bore, said ring being captured between the compression member carried by said rod and said rod guide means whereby rotation of said rod both compresses said ring, thereby forcing it into sealing engagement with the inner diameter of the pipe to be capped and compresses said gasket means between the end of the pipe and said one sleeve member.
Claim 2
Dependent Claim
269 words
A pipe cap for underground pipe comprising; a pair of sleeve members; one of said sleeve members having one end sized to match the inner and outer diameters of the pipe to be capped; the other of said sleeve members being sized to slide longitudinally with respect to the inner diameter of said one sleeve member; rod guide means in abutting relation to said other sleeve member; gasket means carried on one end of said one sleeve member adapted for abutting contact with the end of the pipe to be capped; threaded rod guide means carried on the other end of said one sleeve member with said other end of said one sleeve having an outer diameter of reduced size compared to said one end thereof; a rod having a compression member on one end thereof and being threaded on the other end thereof, said rod being adapted to extend loosely through the rod guide means of said other sleeve member and to extend through said threaded rod guide means of said one sleeve member in threadable engagement therewith and having an operative portion on said one end of said rod which protrudes exteriorly of said one sleeve member; an expansible annular ring having said rod freely extending through its bore, said ring being captured between the compression member carried by said rod and said rod guide means whereby rotation of said rod both compresses said ring, thereby forcing it into sealing engagement with the inner diameter of the pipe to be capped and compresses said gasket means between the end of the pipe and said one sleeve member.
Claim 3
Dependent Claim
91 words
The pipe cap according to claim 1 in which said other end of said one sleeve member has an exterior threaded portion thereon and a protective cap having an outer diameter less than that of the pipe being capped and a hollow interior chamber having a threaded portion adapted for threadable engagement with the exterior of said other end of said one sleeve member whereby water and foreign matter are prevented from contaminating the operative end of said rod, which operative end extends into the said interior chamber of said cap.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |