US3913820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding manipulator
Assignee: WELDING PROCESSES CO
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Filing: 1973-03-30
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Granted: 1975-10-21
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Expires: 1993-03-30
Abstract
Abstract A welding manipulator used during welding of abutted ends of rotating lengths of pipe provides a quadridirectionally travelable boom to which is attached at one end thereof a welding head and a pipe engaging arm which communicates with one of the pipes whereby lateral displacement of the rotating lengths of pipe effects through the travel of the boom an identical displacement of the welding head thereby maintaining a constant spacing between the welding head and the welding surface.
Inventors
- 👤 Lamar Travi Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:16
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0282
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
200 words
Welding manipulator apparatus for use in the welding of abutted ends of two lengths of pipe while they are revolved about their longitudinal axis, comprising: a frame having spaced apart upright members; a carriage on said upright members of said frame; a boom housing mounted with said carriage, said boom housing comprising horizontal cylinder means positioned transversely to said carriage; pivotal mounting means pivotally connecting said boom housing horizontal cylinder means to said carriage for pivotal movement of said boom housing horizontal cylinder means relative to said frame; a boom slidably supported in said boom housing horizontal cylinder means and projecting therefrom for movement in forward and rearward directions relative to said frame; a welding head mounted with said boom forwardly of said frame for positioning adjacent to a welding surface and for movements with said boom; and pipe engaging means mounted with said boom forwardly of said frame for engagement with at least one length of pipe in proximity to the welding surface to be welded for movements in response to variations in the external configuration of the pipe, whereby movementS of said pipe engaging means are transmitted to said boom for causing corresponding movements of said welding head.
Claim 2
Dependent Claim
200 words
Welding manipulator apparatus for use in the welding of abutted ends of two lengths of pipe while they are revolved about their longitudinal axis, comprising: a frame having spaced apart upright members; a carriage on said upright members of said frame; a boom housing mounted with said carriage, said boom housing comprising horizontal cylinder means positioned transversely to said carriage; pivotal mounting means pivotally connecting said boom housing horizontal cylinder means to said carriage for pivotal movement of said boom housing horizontal cylinder means relative to said frame; a boom slidably supported in said boom housing horizontal cylinder means and projecting therefrom for movement in forward and rearward directions relative to said frame; a welding head mounted with said boom forwardly of said frame for positioning adjacent to a welding surface and for movements with said boom; and pipe engaging means mounted with said boom forwardly of said frame for engagement with at least one length of pipe in proximity to the welding surface to be welded for movements in response to variations in the external configuration of the pipe, whereby movementS of said pipe engaging means are transmitted to said boom for causing corresponding movements of said welding head.
Claim 3
Dependent Claim
68 words
The apparatus of claim 1, wherein: said boom housing horizontal cylinder means comprises two substantially horizontally tandem spaced tubular cylinders connected by cross bracing and positioned substantially perpendicular to said carriage and pivotably attached to said carriage by said pivotal mounting means; and said boom includes shafts slidably supported in said tubular cylinders of said boom housing horizontal cylinder means and projecting therefrom in forward and rearward directions.
Claim 4
Dependent Claim
73 words
The apparatus of claim 1, wherein: said carriage includes roller wheels in rotatable contact with the upright members of said frame and a block portion having a vertical threaded aperture therethrough; and said carriage is vertically slidable on the upright members of said frame by means of a thread screw rotatably supported on said frame intermediate said upright members and threadably engaged in said vertical aperture of said block portion of said carriage.
Claim 5
Dependent Claim
32 words
The apparatus of claim 1, including: means for moving said carriage and said boom therewith substantially vertically for initially positioning said pipe engaging means in contact with the surface of the pipe.
Claim 6
Dependent Claim
27 words
The apparatus of claim 1, wherein said pipe engaging means includes: an arcuate arm having a pair of circularly spaced contact rollers for contact with the pipe.
Claim 7
Dependent Claim
25 words
The apparatus of claim 5, including: a movable arm pivotally connected to said arcuate arm and having a roller therewith for contact with the pipe.
Claim 8
Dependent Claim
34 words
The apparatus of claim 6, including: means for pivoting said movable arm relative to said arcuate arm for adjusting the size of the opening therebetween to contact all of said rollers with the pipe.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |