Patent US4088414A successfully refreshed from Google Patents.
US4088414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for joining sections of pipe and method for its use
Assignee: Individual
•
Filing: 1976-09-02
•
Granted: 1978-05-09
•
Expires: 1996-09-02
Abstract
Abstract A coupling for joining sections of tubular pipe together end to end into a continuous length includes a tubular connector having an outside diameter substantially equal to the inside diameter of the pipe and having a protruding annular shoulder of arcuate cross section located intermediate its ends. The adjacent ends of the pipes are placed over opposite ends of the connector and pressed together, flaring their terminal portions outwardly where they abut, substantially coplanar with the diametric center of the shoulder, frictionally joining both sections of pipe to the connector. A metallic colored, silicone sealant is coated over the confronting raw ends of the pipes to provide a low maintenance seal which protects the joint from deterioration.
Inventors
- 👤 Daryl L. Fallein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:57
CPC Classifications
F; F16; F16B; F16B4/00; F16B4/004; E; E04; E04H; E04H17/00; E04H17/14; E04H17/20; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945; Y10T403/00; Y10T403/49; Y10T403/4966; Y10T403/55
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
The method of coupling adjacent sections of scrap tubular pipe end to end into a continuous length to form posts for chain link fences, comprising: a. placing the adjacent terminal portions of the sections of scrap pipe over opposed ends of a tubular connector having an outer diameter substantially equal to the inner diameter of the sections of pipe and having a length at least about three times its outside diameter and having a protruding annular shoulder located intermediate its ends, the shoulder being of progressively increasing diameter toward its central transverse plane with the diameter at said central plane being only slightly greater than the outer diameter of the end portions of the connector, and b. pressing said sections of scrap pipe together over said shoulder until their terminal ends abut at a point substantially coplanar with the central plane of the shoulder, thereby frictionally securing the scrap pipe sections to the connector.
Claim 2
Independent Claim
154 words
The method of coupling adjacent sections of scrap tubular pipe end to end into a continuous length to form posts for chain link fences, comprising: a. placing the adjacent terminal portions of the sections of scrap pipe over opposed ends of a tubular connector having an outer diameter substantially equal to the inner diameter of the sections of pipe and having a length at least about three times its outside diameter and having a protruding annular shoulder located intermediate its ends, the shoulder being of progressively increasing diameter toward its central transverse plane with the diameter at said central plane being only slightly greater than the outer diameter of the end portions of the connector, and b. pressing said sections of scrap pipe together over said shoulder until their terminal ends abut at a point substantially coplanar with the central plane of the shoulder, thereby frictionally securing the scrap pipe sections to the connector.
Claim 3
Dependent Claim
142 words
A coupling for joining sections of scrap tubular pipe together end to end into a continuous length to form posts for chain link fences, comprising: a. a cylindrical connector having an outside diameter substantially equal to the inside diameter of the sections of scrap pipe and a length at least about three times its outside diameter, b. said connector having a protruding annular shoulder located intermediate its ends, the shoulder being of progressively increasing diameter toward its central transverse plane with the diameter of said central plane being only slightly greater than the outside diameter of the end portions of the connector, c. said connector being adapted to be located in the adjacent ends of sections of scrap pipe in a manner such that the abutting terminal ends of the scrap pipes are substantially coplanar with the central plane of the shoulder.
Claim 4
Dependent Claim
142 words
A coupling for joining sections of scrap tubular pipe together end to end into a continuous length to form posts for chain link fences, comprising: a. a cylindrical connector having an outside diameter substantially equal to the inside diameter of the sections of scrap pipe and a length at least about three times its outside diameter, b. said connector having a protruding annular shoulder located intermediate its ends, the shoulder being of progressively increasing diameter toward its central transverse plane with the diameter of said central plane being only slightly greater than the outside diameter of the end portions of the connector, c. said connector being adapted to be located in the adjacent ends of sections of scrap pipe in a manner such that the abutting terminal ends of the scrap pipes are substantially coplanar with the central plane of the shoulder.
References Cited (Backward Citations)
US1188485A
Cited
US1921642A
Cited
US2821415A
Cited
GB726507A
Cited
US3002871A
Cited
US3353850A
Cited
US3466738A
Cited
US3467414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |