Patent US3894455A successfully refreshed from Google Patents.
Patent US4005968A successfully refreshed from Google Patents.
US4005968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe end reforming apparatus
Assignee: Phillips Petroleum Co
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Filing: 1975-05-19
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Granted: 1977-02-01
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Expires: 1995-05-19
Abstract
Abstract An apparatus for reforming pipe ends by belling or the like. The apparatus includes a support structure which has a heater movably mounted thereon and is movable between a pipe end heating position and a second position remote from the heating position. A clamp is provided to hold the pipe in position during heating and forming. A forming mandrel is carried by power operated moving means which selectively moves the mandrel into forming engagement with an end portion of the pipe and after forming of the end portion the mandrel is retracted from engagement therewith. Cooling means are also provided to cool the formed pipe end portion.
Inventors
- 👤 William V. Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:53
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/02; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
179 words
A pipe end reforming apparatus comprising: a. a support; b. a mandrel; c. first means movably mounting said mandrel on said support with said mandrel being movable in a generally linear path between a retracted position and a forming position for engagement with an end portion of a pipe; d. clamp means mounted on said support and adapted for selectively holding a pipe in a preselected position; e. heating means; and f. second means movably mounting said heating means on said support with said heating means being movable, independently of said mandrel, in an arcuate path between a first position and a second position, when in said second position said heating means being in heat transfer relation to an end portion of a pipe and being in axial alignment with said clamp means and said mandrel and when in said first position said heating means being out of axial alignment with said mandrel and the pipe thereby providing clearance for said mandrel to move to the forming position whereby heating and forming can be accomplished without moving said pipe.
Claim 2
Dependent Claim
179 words
A pipe end reforming apparatus comprising: a. a support; b. a mandrel; c. first means movably mounting said mandrel on said support with said mandrel being movable in a generally linear path between a retracted position and a forming position for engagement with an end portion of a pipe; d. clamp means mounted on said support and adapted for selectively holding a pipe in a preselected position; e. heating means; and f. second means movably mounting said heating means on said support with said heating means being movable, independently of said mandrel, in an arcuate path between a first position and a second position, when in said second position said heating means being in heat transfer relation to an end portion of a pipe and being in axial alignment with said clamp means and said mandrel and when in said first position said heating means being out of axial alignment with said mandrel and the pipe thereby providing clearance for said mandrel to move to the forming position whereby heating and forming can be accomplished without moving said pipe.
Claim 3
Dependent Claim
49 words
The apparatus as set forth in claim 1 including: a. cooling means adjacent said mandrel and movable therewith for cooling the end portion of said pipe; and wherein b. said heating means is positioned in the second position so as to substantially surround the periphery of the end portion.
Claim 4
Dependent Claim
63 words
The apparatus as set forth in claim 2 wherein: a. said second means includes an arm on which said heating means is mounted and the arm is pivotably mounted on portions of said support; and b. said second means further includes first power means operably connected to said arm to selectively effect movement of said heating means between said first and second positions.
Claim 5
Dependent Claim
61 words
The apparatus as set forth in claim 2 wherein: a. said first means includes second power means mounted on said support and having said mandrel mounted on a portion thereof to selectively effect the movement of said mandrel between the retracted position and the forming position; and wherein b. said cooling means is carried by portions of said second power means.
Claim 6
Dependent Claim
73 words
The apparatus as set forth in claim 2 wherein: a. said cooling means includes a housing having an open end and partially surrounding said mandrel, a plurality of spray nozzles are mounted on said housing and are directed generally toward said mandrel for directing a cooling fluid toward same to effect cooling of the end portion; and including b. third means associated with said spray nozzles and housing for collecting sprayed cooling fluid.
Claim 7
Dependent Claim
55 words
The apparatus as set forth in claim 2 wherein: a. said heating means includes at least one heater element mounted in a second housing which is secured to said arm, said second housing having an open end for receiving the end portion therein, air circulation inducing means communicate with the interior of the second housing.
Claim 8
Dependent Claim
43 words
The apparatus as set forth in claim 6 wherein: a. said heater element is an electric heating element; and b. said heating means includes a second electric heating element mounted in said housing and centrally located to be received inside the end portion.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |