US4313627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe part with a displaceable abutment edge
Assignee: Wavin BV
•
Filing: 1979-03-29
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Granted: 1982-02-02
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Expires: 1999-03-29
Abstract
Abstract A pipe part comprising an abutment-edge and a retaining ring being interconnected by means of retaining strips or dumb-bells which dumb-bells or strips will yield under a load without breaking. The pipe part consists of a polyolefin, preferably a polypropylene.
Inventors
- 👤 Tinus de Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:18
CPC Classifications
F; F16; F16L; F16L51/00; F16L21/00; F16L47/00; F16L47/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
167 words
A pipe insert part of thermoplastics for connection of telescopically inserted pipes (9 and 12), said insert being provided with annular means (ring 6) for axially supporting said insert upon pipe 2 and an annular abutment edge for engaging the front side of an inserted pipe (9), said insert being capable of withstanding a maximum axial force executed by axial loads executed upon inserted pipe 9 without breaking, said means (ring 6) and abutment edge 8 being connected by connecting part means (7), which are strip shaped or bar shaped and are circumferentially spaced from each other with the area between adjacent connecting part means being open to the radial interior and exterior of said insert, said connecting part means 7 are formed of a polyolefin, said connecting part means 7 being capable of allowing elongation without breaking when they elongate over a height corresponding with the height between the lower side of the abutment edge (8) and a shoulder (11) between pipe 9 and pipe 1.
Claim 2
Dependent Claim
167 words
A pipe insert part of thermoplastics for connection of telescopically inserted pipes (9 and 12), said insert being provided with annular means (ring 6) for axially supporting said insert upon pipe 2 and an annular abutment edge for engaging the front side of an inserted pipe (9), said insert being capable of withstanding a maximum axial force executed by axial loads executed upon inserted pipe 9 without breaking, said means (ring 6) and abutment edge 8 being connected by connecting part means (7), which are strip shaped or bar shaped and are circumferentially spaced from each other with the area between adjacent connecting part means being open to the radial interior and exterior of said insert, said connecting part means 7 are formed of a polyolefin, said connecting part means 7 being capable of allowing elongation without breaking when they elongate over a height corresponding with the height between the lower side of the abutment edge (8) and a shoulder (11) between pipe 9 and pipe 1.
Claim 3
Dependent Claim
21 words
The pipe part of claim 1, wherein the abutment edge and connecting part means consists of a thermoplastic, preferably a polyolefin.
Claim 4
Dependent Claim
21 words
The pipe part of claim 1, wherein the abutment edge consists of a polyethylene having a density of 0.920 to 0.960.
Claim 5
Dependent Claim
23 words
A pipe part as defined in claim 1, wherein the abutment edge consists of a polyethylene having a density of 0.930 to 0.940.
Claim 6
Dependent Claim
15 words
A pipe part as defined in claim 1, wherein the abutment edge consists of polypropylene.
References Cited (Backward Citations)
US1938286A
Cited
US2116705A
Cited
US2269560A
Cited
DE1206680B
Cited
GB971721A
Cited
DE1215452B
Cited
FR2167439A5
Cited
US3858914A
Cited
NL7605576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |