US3682502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: J-M A/C PIPE Corp A DE CORP
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Filing: 1970-06-29
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Granted: 1972-08-08
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Expires: 1990-06-29
Abstract
Abstract This invention relates to a pipe coupling for joining the ends of two sections of pipe in axial communication. The coupling is defined by a thin walled flexible tubular sleeve having peripherally spaced apart generally inflexible internal abutments for positioning the pipes relative to the coupling but permitting the sleeve to be collapsed upon itself for ease of handling and transporting.
Inventors
- 👤 Winfield F Corriston
- 👤 Robert W Heisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:14
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L47/00; F16L47/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
181 words
A pipe coupling for joining pipe ends in axial communication comprising: a sleeve formed of relatively thin walled semi-elastic material adapted to receive pipe ends therein from opposite directions, said sleeve having an intermediate portion of an internal diameter less than external diametErs of pipe ends the sleeve is adapted to receive to assure a tight fit between pipe ends and the sleeve, and said sleeve having flared terminal portions, each terminal portion having an internal diameter at its outermost end greater than said internal diameter of said intermediate portion to facilitate entry of pipe ends into the sleeve; said intermediate and terminal portions having uninterrupted internal surfaces means internal of the sleeve and intermediate the terminal portions thereof defining axial abutments for contact with pipe ends to limit the entry of pipe ends into the sleeve; and said abutment means being circumferentially spaced apart about the inner periphery of the sleeve wall and being relatively inflexible whereby the semi-elastic sleeve wall between adjacent abutments may act as hinges thereby permitting the sleeve to be at least partially collapsed upon itself.
Claim 2
Dependent Claim
181 words
A pipe coupling for joining pipe ends in axial communication comprising: a sleeve formed of relatively thin walled semi-elastic material adapted to receive pipe ends therein from opposite directions, said sleeve having an intermediate portion of an internal diameter less than external diametErs of pipe ends the sleeve is adapted to receive to assure a tight fit between pipe ends and the sleeve, and said sleeve having flared terminal portions, each terminal portion having an internal diameter at its outermost end greater than said internal diameter of said intermediate portion to facilitate entry of pipe ends into the sleeve; said intermediate and terminal portions having uninterrupted internal surfaces means internal of the sleeve and intermediate the terminal portions thereof defining axial abutments for contact with pipe ends to limit the entry of pipe ends into the sleeve; and said abutment means being circumferentially spaced apart about the inner periphery of the sleeve wall and being relatively inflexible whereby the semi-elastic sleeve wall between adjacent abutments may act as hinges thereby permitting the sleeve to be at least partially collapsed upon itself.
Claim 3
Dependent Claim
18 words
The claimed subject matter of claim 1 wherein the abutment means is integrally formed with the sleeve wall.
Claim 4
Dependent Claim
22 words
The claimed subject matter of claim 2 wherein the integrally formed abutment means are of a shape for establishing their relative inflexibility.
References Cited (Backward Citations)
US3177015A
Cited
US3212799A
Cited
FR1326856A
Cited
US3508587A
Cited
GB1146169A
Cited
US3368830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |