Patent US3735472A successfully refreshed from Google Patents.
US3735472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe fitting weld alignment apparatus
Assignee: Individual
•
Filing: 1971-03-26
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Granted: 1973-05-29
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Expires: 1991-03-26
Abstract
Abstract Apparatus for holding pipe sections in alignment during welding, particularly pipe fittings such as elbows and the like. Two compact chuck units are mounted by a simple jig in the confronting ends of the pipe sections to be joined, and are then coupled by an adjustable connector to set the position of the sections. After initial welding, the connector and chuck units are removed through the pipe fitting. The apparatus is adaptable to a wide range of pipe sizes.
Inventors
- 👤 I Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:20
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0531; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53913; Y10T29/53917; Y10T29/53978; Y10T29/53983
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
Pipe fitting weld alignment apparatus comprising a pair of short cylindrical chuck units, each individually having its own jaw elements adjustable substantially radially to grip the interior of a pipe, pipe attaching means having removable clamp means for attaching the pipe attaching means to each chuck unit, said pipe attaching means having arms for engagement with the end of a pipe with the chuck unit held in substantially axial alingment in the pipe, coupling means for adjustably interconnecting said chuck units in axial alignment, and said jaw elements have threaded stud portions on the outer ends thereof, and including jaw extension means securable on the inner ends of said stud portions.
Claim 2
Dependent Claim
111 words
Pipe fitting weld alignment apparatus comprising a pair of short cylindrical chuck units, each individually having its own jaw elements adjustable substantially radially to grip the interior of a pipe, pipe attaching means having removable clamp means for attaching the pipe attaching means to each chuck unit, said pipe attaching means having arms for engagement with the end of a pipe with the chuck unit held in substantially axial alingment in the pipe, coupling means for adjustably interconnecting said chuck units in axial alignment, and said jaw elements have threaded stud portions on the outer ends thereof, and including jaw extension means securable on the inner ends of said stud portions.
Claim 3
Dependent Claim
37 words
A pipe fitting weld alignment apparatus as claimed in claim 1 in which, each of said chuck units has an axial bore, said coupling means comprising a pin extending through said bores and having threaded adjustment means.
Claim 4
Dependent Claim
78 words
A pipe fitting weld alignment apparatus as claimed in claim 2 in which, said pipe attachment means has a hub from which said arms extend in coplanar alignment, said clamp means comprising a bolt passing through said hub and the axial bore of a chuck unit to hold the pipe attachment means against one end face of the chuck unit, and a nut threaded on said bolt to clamp against the other end face of the chuck unit.
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |