US3700266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for connecting pipes together
Assignee: Individual
•
Filing: 1970-12-28
•
Granted: 1972-10-24
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Expires: 1990-12-28
Abstract
Abstract A device for interconnecting pipes and consisting of a yieldable plastics sleeve having two rows of axially offset lugs formed on its inner surface which serve to centralize and support the pipes. The rows of lugs have a gap therebetween accommodating a resilient or flexible plain annular disc. The disc separates the ends of the pipes and contacts stop faces of the lugs extending perpendicularly to the longitudinal axis of the sleeve. These lugs also have inclined bearing faces adjoining the stop faces and engaging the pipes and the disc can slide over these faces when being installed in the gap. Sealing rings are disposed between the exterior of the pipes and the interior of the sleeve.
Inventors
- 👤 Karl Glehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:59
CPC Classifications
F; F16; F16L; F16L49/00; F16L49/02; F16L21/00; F16L21/02; F16L21/022; F16L21/025; F16L47/00; F16L47/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A device for connecting cylindrical pipes together, comprising: a. a substantially cylindrical sleeve of yieldable plastic material adapted to receive the ends of the pipes to be connected; b. lugs formed on the inner surface of said sleeve, said lugs being arranged in two axially offset circular rows to form a gap therebetween, said lugs in each of said rows being circumferentially spaced, each of said lugs being formed with a stop face delimiting said gap, an inclined face extending axially of the sleeve and a flat surface between said stop face and said inclined face; c. an annular disc made of yieldable material and located in said gap, the arrangement being such that said disc slides over the inclined faces of said lugs when said disc is inserted into said gap; and d. sealing rings disposed within the internal surface of said sleeve and adapted to engage the adjacent ends of inserted pipes.
Claim 2
Independent Claim
154 words
A device for connecting cylindrical pipes together, comprising: a. a substantially cylindrical sleeve of yieldable plastic material adapted to receive the ends of the pipes to be connected; b. lugs formed on the inner surface of said sleeve, said lugs being arranged in two axially offset circular rows to form a gap therebetween, said lugs in each of said rows being circumferentially spaced, each of said lugs being formed with a stop face delimiting said gap, an inclined face extending axially of the sleeve and a flat surface between said stop face and said inclined face; c. an annular disc made of yieldable material and located in said gap, the arrangement being such that said disc slides over the inclined faces of said lugs when said disc is inserted into said gap; and d. sealing rings disposed within the internal surface of said sleeve and adapted to engage the adjacent ends of inserted pipes.
Claim 3
Dependent Claim
15 words
The device of claim 1, wherein each row of lugs comprises at least four lugs.
Claim 4
Dependent Claim
22 words
The device of claim 1, wherein the inclined face of each lug extends over about one-third the total length of the lug.
Claim 5
Dependent Claim
21 words
The device of claim 1, wherein the stop face of each lug is perpendicular to the longitudinal axis of the sleeve.
Claim 6
Dependent Claim
164 words
The combination of two pipes and a sleeve of yieldable plastic material in which the ends of said pipes extend into said sleeve for retention thereby, said sleeve having lugs formed on its inner surface which engage the pipes to centralize and support the latter, said lugs being arranged in two circular rows axially offset to one another to form a gap therebetween, said lugs in each of said rows being circumferentially spaced, an annular disc made of yieldable material disposed within the gap and between the ends of the pipes, wherein each lug has a stop face adjacent the gap, an inclined face extending axially of the sleeve and a flat surface between said stop face and said inclined face engaging the adjacently disposed pipe, said disc sliding over the inclined faces of said lugs when inserted in the gap, and sealing rings disposed between the external surface of the ends of the two inserted pipes and the internal surface of the sleeve.
Claim 7
Dependent Claim
164 words
The combination of two pipes and a sleeve of yieldable plastic material in which the ends of said pipes extend into said sleeve for retention thereby, said sleeve having lugs formed on its inner surface which engage the pipes to centralize and support the latter, said lugs being arranged in two circular rows axially offset to one another to form a gap therebetween, said lugs in each of said rows being circumferentially spaced, an annular disc made of yieldable material disposed within the gap and between the ends of the pipes, wherein each lug has a stop face adjacent the gap, an inclined face extending axially of the sleeve and a flat surface between said stop face and said inclined face engaging the adjacently disposed pipe, said disc sliding over the inclined faces of said lugs when inserted in the gap, and sealing rings disposed between the external surface of the ends of the two inserted pipes and the internal surface of the sleeve.
References Cited (Backward Citations)
GB190629073A
Cited
DE908691C
Cited
US2926028A
Cited
FR1386074A
Cited
US3317087A
Cited
US3563574A
Cited
US3572777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |