US3937501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: Individual
•
Filing: 1974-05-09
•
Granted: 1976-02-10
•
Expires: 1994-05-09
Abstract
Abstract A pipe coupling for coupling two pipe ends with annular flanges spaced from the end faces of the pipe ends comprises a plurality of part shells the adjacent ends of two of which are connected by a clamping lever lock and the remaining adjacent ends of which are flexibly connected together, means in the part shells for engaging behind the annular flanges on the pipe ends and a coupling sleeve slidable in the pipe ends between the flanges and having annular seals, sealing the pipe ends to the coupling sleeve.
Inventors
- 👤 Karl Weinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:22
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16L33/12; F16L23/00; F16L23/04; F16L23/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
189 words
A quick coupling for coupling two pipe ends comprising an annular flange secured on each of said pipe ends and spaced from the end faces of said pipe ends, a plurality of part shells, a clamping lever lock for connecting adjacent ends of a first and second of said part shells, engagement means on said part shells for engagement behind said annular flanges, means for hingedly connecting the remaining adjacent ends of said plurality of part shells, an intermediate coupling sleeve axially slidable on said pipe ends and between said annular flanges and having a pair of annular recesses therein, annular seals positioned in said annular recesses of said coupling sleeve and each adapted to engage one of said pipe ends to seal said one of said pipe ends to said coupling sleeve, said annular flanges each including an annular base portion spaced from said end face of said pipe end, a flange portion inclined from said base portion outwardly towards said end face of said pipe end, and a radial bearing surface for engagement by said engagement means of said part shells radially outwardly of said coupling sleeve.
Claim 2
Dependent Claim
189 words
A quick coupling for coupling two pipe ends comprising an annular flange secured on each of said pipe ends and spaced from the end faces of said pipe ends, a plurality of part shells, a clamping lever lock for connecting adjacent ends of a first and second of said part shells, engagement means on said part shells for engagement behind said annular flanges, means for hingedly connecting the remaining adjacent ends of said plurality of part shells, an intermediate coupling sleeve axially slidable on said pipe ends and between said annular flanges and having a pair of annular recesses therein, annular seals positioned in said annular recesses of said coupling sleeve and each adapted to engage one of said pipe ends to seal said one of said pipe ends to said coupling sleeve, said annular flanges each including an annular base portion spaced from said end face of said pipe end, a flange portion inclined from said base portion outwardly towards said end face of said pipe end, and a radial bearing surface for engagement by said engagement means of said part shells radially outwardly of said coupling sleeve.
Claim 3
Dependent Claim
28 words
A pipe coupling as defined in claim 1, wherein said coupling sleeve comprises a sleeve axially spaced from said annular flanges in an assembled state of said coupling.
Claim 4
Dependent Claim
49 words
A pipe coupling as defined in claim 1, and further comprising a radial securing element on said coupling sleeve and defining an aperture in said securing element and a connecting bolt forming said flexible connecting means for said part shells passing through said aperture defined by said securing element.
Claim 5
Dependent Claim
69 words
A pipe coupling as defined in claim 3, and comprising a bolt forming said connecting bolt extending in close proximity to external surfaces of said annular flanges and spacing strips at each end of said bolt extending over adjacent ends of said part shells associated with said bolt, extending axially of said bolt and bearing against said securing element to hold it in axial position relative to said bolt.
References Cited (Backward Citations)
FR881504A
Cited
US2725246A
Cited
US3495853A
Cited
US3695636A
Cited
US3733092A
Cited
US3756629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |