US3756629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stud system of joining pipe and couplings for same
Assignee: Victaulic Co
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Filing: 1971-10-01
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Granted: 1973-09-04
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Expires: 1991-10-01
Abstract
Abstract Radially projecting studs are secured around the outer circumference of pipes near the pipe ends by arc stud welding. Mechanical couplings receive the studs of opposed ends of adjacent pipe sections to join the pipe. The couplings may be formed in two or more arcuate parts which mate to form a complete ring, or stab-type couplings may be used, and suitable gaskets cooperate with the couplings to form pressure sealed joints.
Inventors
- 👤 J Gibb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:25
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/04; F16L21/00; F16L21/06; F16L21/08
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
76 words
A pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, and mechanical coupling means overlying and engaging said studs of both pipes, said mechanical coupling means including an annular coupling element of larger diameter than said pipe, said coupling element having spaced parallel annular channels for receiving the free outer ends of said studs.
Claim 2
Dependent Claim
76 words
A pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, and mechanical coupling means overlying and engaging said studs of both pipes, said mechanical coupling means including an annular coupling element of larger diameter than said pipe, said coupling element having spaced parallel annular channels for receiving the free outer ends of said studs.
Claim 3
Dependent Claim
21 words
The pipe joint of claim 1 and including a gasket within said coupling means for sealing the pipe joint against leakage.
Claim 4
Dependent Claim
65 words
A pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, and mechanical coupling means overlying and engaging said studs of both pipes, said coupling means comprising a plurality of arcuate coupling sections having radially outwardly extending end portions secured together by fastening means.
Claim 5
Dependent Claim
65 words
A pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, and mechanical coupling means overlying and engaging said studs of both pipes, said coupling means comprising a plurality of arcuate coupling sections having radially outwardly extending end portions secured together by fastening means.
Claim 6
Independent Claim
134 words
A method of joining pipe sections end to end comprising arc welding a plurality pf upstanding studs to the outer surface of pipe sections near the ends of said pipe sections, said studs being at circumferentially radially spaced positions around the pipe sections, positioning the pipe sections with ends to be joined in opposed positions, fitting an annular channel around the opposed ends to enclose a joint between the ends, and securing the pipe sections together by placing a plurality of joint bridging pieces at radially spaced locations around the pipe section ends and securing said bridging pieces with positive fasteners to said channel, each bridging piece overlying the channel and engaging at least one stud on each pipe section whereby end load forces on the pipe sections are carried by the bridging pieces.
Claim 7
Independent Claim
134 words
A method of joining pipe sections end to end comprising arc welding a plurality pf upstanding studs to the outer surface of pipe sections near the ends of said pipe sections, said studs being at circumferentially radially spaced positions around the pipe sections, positioning the pipe sections with ends to be joined in opposed positions, fitting an annular channel around the opposed ends to enclose a joint between the ends, and securing the pipe sections together by placing a plurality of joint bridging pieces at radially spaced locations around the pipe section ends and securing said bridging pieces with positive fasteners to said channel, each bridging piece overlying the channel and engaging at least one stud on each pipe section whereby end load forces on the pipe sections are carried by the bridging pieces.
Claim 8
Dependent Claim
18 words
The method of claim 4 including centering the bridging pieces with reSpect to studs on both pipe sections.
Claim 9
Dependent Claim
40 words
The method of claim 4 wherein said studs are located in spaced groups around the pipe sections and wherein said centering of said bridging pieces includes centering each bridging piece with respect to the middle of a group of studs.
Claim 10
Dependent Claim
23 words
The method of claim 4 wherein said fitting of said annular channel comprises stabbing the end of a pipe section into said channel.
Claim 11
Dependent Claim
136 words
A pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, said studs being grouped in radially spaced groups around the pipe circumference, and mechanical coupling means including a generally annular channel section having a web formed on a diameter larger than the diameter of said pipes and legs extending inwardly toward said pipe from said web, said channel section encircling opposed ends of said pipes, said coupling means also including a plurality of bridging elements overlying said annular channel section and secured to said channel section, said bridging elements each overlying and engaging a group of studs welded to each of said pipes said studs being received within corresponding recesses in said bridging elements.
Claim 12
Dependent Claim
136 words
A pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, said studs being grouped in radially spaced groups around the pipe circumference, and mechanical coupling means including a generally annular channel section having a web formed on a diameter larger than the diameter of said pipes and legs extending inwardly toward said pipe from said web, said channel section encircling opposed ends of said pipes, said coupling means also including a plurality of bridging elements overlying said annular channel section and secured to said channel section, said bridging elements each overlying and engaging a group of studs welded to each of said pipes said studs being received within corresponding recesses in said bridging elements.
Claim 13
Dependent Claim
64 words
The pipe joint of claim 8 wherein said bridging elements are each secured to said channel section by means of a threaded member extending outwardly from said channel section through a corresponding slot in said bridging element and a fastener on said member whereby said bridging elements are individually adjustable with respect to said studs by positioning said bridging elements before tightening said fasteners.
Claim 14
Dependent Claim
19 words
The pipe joint of claim 8 wherein said bridging elements are positively secured to said generally annular channel section.
Claim 15
Dependent Claim
33 words
The pipe joing of claim 14 wherein said bridging elements are integrally formed with said generally annular channel section, said recesses comprising inwardly facing channels in said bridging pieces for receiving said studs.
Claim 16
Dependent Claim
18 words
The pipe joint of claim 8 wherein said generally annular channel section is formed as an integral ring.
Claim 17
Dependent Claim
20 words
The pipe joint of claim 8 wherein said generally annular channel section is formed of a plurality of arcuate sections.
Claim 18
Independent Claim
74 words
A method of joining pipe sections end to end comprising arc welding a plurality of upstanding studs to the outer surfaces of said pipe sections at radially spaced positions around said pipe sections, positioning a generally annular coupling around the ends of both pipe sections, and securing said pipes against separation by placing opposed members over the studs on each of said pipe sections and securing said opposed members to said generally annular coupling.
Claim 19
Independent Claim
74 words
A method of joining pipe sections end to end comprising arc welding a plurality of upstanding studs to the outer surfaces of said pipe sections at radially spaced positions around said pipe sections, positioning a generally annular coupling around the ends of both pipe sections, and securing said pipes against separation by placing opposed members over the studs on each of said pipe sections and securing said opposed members to said generally annular coupling.
Claim 20
Dependent Claim
21 words
The method joint claim 14 including locating said opposed members symetrically with respect to a plane bisecting said generally annular coupling.
Claim 21
Dependent Claim
14 words
The method of claim 14 including positively securing said opposed members to said studs.
Claim 22
Dependent Claim
78 words
An end-to-end pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, and mechanical coupling means including a generally annular coupling member encircling opposed ends of said pipes, a pair of opposed members, one of said opposed members engaging the studs of each of said pipes, and means securing the opposed members to said generally annular coupling.
Claim 23
Dependent Claim
78 words
An end-to-end pipe joint comprising two pipes, each of said pipes having a plurality of upstanding studs welded to the outer pipe surface at radially spaced positions around the circumference of the pipe, and mechanical coupling means including a generally annular coupling member encircling opposed ends of said pipes, a pair of opposed members, one of said opposed members engaging the studs of each of said pipes, and means securing the opposed members to said generally annular coupling.
Claim 24
Dependent Claim
44 words
The pipe joint of claim 17 wherein said generally annular coupling includes a channel section encircling the pipe joint and the means securing said coupling to said opposed members includes a plurality of bridge elements secured to said channel and engaging said opposed members.
Claim 25
Dependent Claim
26 words
The joint of claim 17 wherein each opposed member has a groove receiving the studs and said generally annular coupling is an integrally formed sleeve-like member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |