US3817559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riser assembly
Assignee: Kerotest Manufacturing Corp
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Filing: 1972-09-22
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Granted: 1974-06-18
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Expires: 1992-09-22
Abstract
Abstract A riser assembly for the connection of an underground gas line to a meter or other device includes a tubular polyethylene adapter having its lower end connected to the upper end of a polyethylene tubular member, which is connected at its lower end to the underground pipeline. A connecting sleeve of corrosion resistant, electrically nonconductive material, such as a combination of fiber glass and epoxy resin, maintains the upper end of the adapter in spaced relationship to the lower end of a metallic tubular member, which is connected at its upper end to the meter or other device. A polyethylene support sleeve surrounds the outer surface of the mutually connected end portions of the adapter and the lower tubular member. The adjacent ends of the lower portion connecting sleeve and upper portion of the adapter are maintained in fluid-tight engagement by the combination adapter support sleeve and resilient O-ring secured in the upper portion of the adapter. The riser assembly can also include a metallic outer support conduit surrounding the riser assembly and extending from the connection between the lower end of the metallic upper tubular member and the upper end of the connecting sleeve to a point at the lower end of the lower polyethylene tubular member near the connection to the underground pipeline. The outer support conduit may be closed for storage or transport at its upper end by an epoxy seal and at its lower end by a resilient end plug.
Inventors
- 👤 J Tricini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:06
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/18; F16L47/00; F16L47/20; F16L47/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
225 words
A riser assembly for an underground pipeline including, a first tubular member having first connecting means at its lower end and second connecting means at its upper end, said first tubular member constructed of a corrosion resistant, electrically nonconductivE material, a metallic second tubular member mounted above the first tubular member and having a first connecting means at one end and a second connecting means to the other end thereof, said second connecting means spaced from the first tubular member and arranged to connect said metallic second tubular member to another desired device, a connecting sleeve connected to the first tubular member second connecting means and to said second tubular member first connecting means, said connecting sleeve constructed of a corrosion resistant, electrically nonconductive, rigid material, a third tubular member connected at its upper end to the first connecting means at the lower end of the first tubular member remote from said connecting sleeve and having second connecting means to said underground pipeline at the end of said third tubular member remote from said first tubular member, said third tubular member fabricated of corrosion resistant, electrically nonconductive material, and a metallic fourth tubular member positioned in said first tubular member adjacent to said connecting sleeve, said metallic fourth tubular member operable to maintain said first tubular member in fluid tight engagement with said connecting sleeve.
Claim 2
Dependent Claim
225 words
A riser assembly for an underground pipeline including, a first tubular member having first connecting means at its lower end and second connecting means at its upper end, said first tubular member constructed of a corrosion resistant, electrically nonconductivE material, a metallic second tubular member mounted above the first tubular member and having a first connecting means at one end and a second connecting means to the other end thereof, said second connecting means spaced from the first tubular member and arranged to connect said metallic second tubular member to another desired device, a connecting sleeve connected to the first tubular member second connecting means and to said second tubular member first connecting means, said connecting sleeve constructed of a corrosion resistant, electrically nonconductive, rigid material, a third tubular member connected at its upper end to the first connecting means at the lower end of the first tubular member remote from said connecting sleeve and having second connecting means to said underground pipeline at the end of said third tubular member remote from said first tubular member, said third tubular member fabricated of corrosion resistant, electrically nonconductive material, and a metallic fourth tubular member positioned in said first tubular member adjacent to said connecting sleeve, said metallic fourth tubular member operable to maintain said first tubular member in fluid tight engagement with said connecting sleeve.
Claim 3
Dependent Claim
35 words
A riser assembly for an underground pipeline as set forth in claim 1 wherein, said connecting sleeve encloses the lower portion of the second tubular member and the upper portion of the first tubular member.
Claim 4
Dependent Claim
39 words
A riser assembly for an underground pipeline as set forth in claim 1 wherein, the connecting sleeve is bonded around the adjacent ends of the first and second tubular members to form a fluid-tight seal around said adjacent ends.
Claim 5
Dependent Claim
70 words
A riser assembly for an underground pipeline as set forth in claim 1 wherein, the second tubular member has external threads at its lower end, the first tubular member has external threads at its upper end, and the connecting sleeve has internal threads constructed and arranged to engage the threads on each of the lower end of the second tubular member and the upper end of the first tubular member.
Claim 6
Dependent Claim
47 words
A riser assembly for an underground pipeline as set forth in claim 1 which includes, a support sleeve constructed of corrosion resistant, electrically nonconductive material, said support sleeve surrounds the external surfaces of the adjacent connected ends of the first tubular member and the third tubular member.
Claim 7
Dependent Claim
63 words
A riser assembly for an underground pipeline as set forth in claim 1 which includes, a metallic adapter support sleeve connected at its lower end to the second connecting means within the internal surface at the upper end of the first tubular member adjacent the lower end of the connecting sleeve and extending longitudinally within the upper portion of the first tubular member.
Claim 8
Dependent Claim
98 words
A riser assembly for an underground pipeline as set forth in claim 1 wherein, an O-ring fabricated of resilient material is contained within a circular groove formed within the external surface at the upper portion of the first tubular member and abutting the lower portion of the connecting sleeve maintaining the lower portion of said connecting sleeve in spaced relation away from the upper portion of said first tubular member and, said O-ring provides a fluid tight seal around each end of the upper portion of the first tubular member and the lower portion of the connecting sleeve.
Claim 9
Dependent Claim
60 words
A riser assembly for an underground pipeline as set forth in claim 7 which includes, a metallic tubular outer support conduit substantially enclosing the riser assembly and extending continuously from the lower portion of the second tubular member and the connecting sleeve to the lower portion of the third tubular member adjacent said means for connection to the underground pipeline.
Claim 10
Dependent Claim
92 words
A riser assembly for an underground pipeline as set forth in claim 8 which includes, corrosion resistant, electrically nonconductive, fluid tight first sEaling means secured between said connecting sleeve and said outer support conduit around the connection between said connecting sleeve and said second tubular member, said sealing means extending along the outer surface of said second tubular member above the connection of said second tubular member to said connecting sleeve and separating the inner surface of said metallic outer support conduit from the outer surface of said metallic second tubular member.
Claim 11
Dependent Claim
104 words
A riser assembly for an underground pipeline as set forth in claim 8 which includes, a resilient, corrosion resistant, electrically nonconductive fluid tight end plug secured between the end portion of said metallic tubular outer support conduit and the lower portion of said third tubular member adjacent said means for connection to the underground pipeline, said end plug therein surrounds the lower portion of said thrid tubular member in fluid-tight engagement and maintains a fluid-tight seal between the lower end of said metallic outer support conduit and the lower portion of said third tubular member adjacent said means for connection to said underground pipeline.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |