Patent US3837686A successfully refreshed from Google Patents.
US3837686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas service connector
Assignee: Individual
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Filing: 1973-07-20
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Granted: 1974-09-24
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Expires: 1993-07-20
Abstract
Abstract A gas service connector wherein a metal tube, having an outer and an inner lamination of different metals, is provided at one end with an enlarged portion to receive a plastic underground conduit and at its other end with a fitting for connection to a service member or the like; the enlarged end being fitted with an internal connecting sleeve mechanically interlocked to the inner lamination and extending within the plastic conduit; the enlarged end portion of the metal tube containing a seal member and being constrictible about the sleeve and plastic conduit to effect a mechanical interlock between the sleeve and plastic conduit as well as to effect a seal between the metal tube and plastic conduit.
Inventors
- 👤 J Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:29
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/14; F16L13/16; F16L13/161; F16L13/166; F16L47/00; F16L47/20; F16L47/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A gas service connector for plastic gas conduits, comprising: a. a metallic tubular member enlarged at one end to recieve a plastic gas conduit; b. an inner sleeve received in an end of the tubular member and an adjoining end of the plastic conduit; c. the metallic tube member having a first consticted region engaged with one end portion of the sleeve to form a first mechanical interlock therebetween, and a second constricted region surrounding the plastic conduit and the other end portion of the sleeve to form a second mechanical interlock between the sleeve and the plastic conduit; d. and means forming a seal between the tubular member and the plastic conduit.
Claim 2
Dependent Claim
113 words
A gas service connector for plastic gas conduits, comprising: a. a metallic tubular member enlarged at one end to recieve a plastic gas conduit; b. an inner sleeve received in an end of the tubular member and an adjoining end of the plastic conduit; c. the metallic tube member having a first consticted region engaged with one end portion of the sleeve to form a first mechanical interlock therebetween, and a second constricted region surrounding the plastic conduit and the other end portion of the sleeve to form a second mechanical interlock between the sleeve and the plastic conduit; d. and means forming a seal between the tubular member and the plastic conduit.
Claim 3
Dependent Claim
30 words
A gas service connection as defined in claim 1, wherein: a. the seal means is disposed within the second constricted region and compressed upon constriction of the second constrictible region.
Claim 4
Dependent Claim
42 words
A gas service connector as defined in claim 1, wherein: a. the tubular member includes an outer lamination and an inner lamination, the inner lamination terminating short of the enlarged end; b. the sleeve being similar in composition to the inner lamination.
Claim 5
Dependent Claim
46 words
A gas service conncector as defined in claim 1, wherein: a. the tubular member and plastic conduit are received in a sheath pipe; b. and means of the extended end of the tubular member disposed in sealed relation to the corresponding end of the sheath pipe.
Claim 6
Dependent Claim
96 words
A gas pressure connector for plastic gas conduits, comprising: a. a metallic tubular member having an enlarged end portion, the tubular member having an inner lamination terminating short of the enlarged end; b. an inner sleeve secured and sealed to the inner lamination and extending into the enlarged end portion; c. thE inner sleeve being inserted within a plastic gas conduit upon fitting the enlarged end of the tubular member over the plastic conduit; d. the tubular member being constricted over the plastic conduit to effect a seal between the plastic conduit and the inner sleeve.
Claim 7
Dependent Claim
96 words
A gas pressure connector for plastic gas conduits, comprising: a. a metallic tubular member having an enlarged end portion, the tubular member having an inner lamination terminating short of the enlarged end; b. an inner sleeve secured and sealed to the inner lamination and extending into the enlarged end portion; c. thE inner sleeve being inserted within a plastic gas conduit upon fitting the enlarged end of the tubular member over the plastic conduit; d. the tubular member being constricted over the plastic conduit to effect a seal between the plastic conduit and the inner sleeve.
Claim 8
Dependent Claim
38 words
A gas service connector as defined in claim 5, wherein: a. a seal ring surrounds the inner sleeve and is positioned to effect a sealed connection between the plastic conduit and tubular member upon constriction of said member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |