Patent US3840170A successfully refreshed from Google Patents.
US3840170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic, circumferentially traveling mechanism for use in automatic circumferential welding or cutting device
Assignee: Kobe Steel Ltd
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Filing: 1973-02-05
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Granted: 1974-10-08
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Expires: 1993-02-05
Abstract
Abstract This disclosure relates to an automatic circumferentially traveling mechanism for use in an automatic circumferential welding or cutting device which is adapted to automatically weld or cut a cylindrical body along a circumferential line thereof. The combination of a welding or cutting device provided with magnetic rollers and flexible bodies which are adapted to guide the body of the welding or cutting device make easier the automatic welding or cutting operation, which has heretofore been of a time-consuming nature, and provides the achievement of such with a mechanism which is light in weight and well suited for such an operation.
Inventors
- 👤 M Arikawa
- 👤 M Oishi
- 👤 H Watanabe
- 👤 S Horiuchi
- 👤 K Hatano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/02; B23K37/0211; B23K37/0217; B23K9/00; B23K9/02; B23K9/028; B23K9/0282; B23K9/0286
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
An automatic, circumferentially traveling mechanism for use in the automatic circumferential welding of a body having a substantially cylindrical configuration, comprising: at least one welding device adapted to self-travel around the circumference of said body to be welded, said at least one welding device being provided with a plurality of magnetic rollers, at least one of which is adapted to rotate so as to transmit a driving force and at least one of which is provided with a circumferential groove therein; at least one flexible body adapted to be wound and tightened around the circumference of said cylindrical body to be welded with both ends of said body being removably secured to said at least one welding device; and a guide rail mounted around the circumference of said cylindrical body to be welded and being designed to be received in said circumferential groove of said at least one magnetic roller, whereby said magnetic roller moves around said cylindrical body on said guide rail.
Claim 2
Dependent Claim
163 words
An automatic, circumferentially traveling mechanism for use in the automatic circumferential welding of a body having a substantially cylindrical configuration, comprising: at least one welding device adapted to self-travel around the circumference of said body to be welded, said at least one welding device being provided with a plurality of magnetic rollers, at least one of which is adapted to rotate so as to transmit a driving force and at least one of which is provided with a circumferential groove therein; at least one flexible body adapted to be wound and tightened around the circumference of said cylindrical body to be welded with both ends of said body being removably secured to said at least one welding device; and a guide rail mounted around the circumference of said cylindrical body to be welded and being designed to be received in said circumferential groove of said at least one magnetic roller, whereby said magnetic roller moves around said cylindrical body on said guide rail.
Claim 3
Dependent Claim
24 words
An automatic, circumferentially traveling mechanism as defined in claim 1, wherein said at least one flexible body is provided with a plurality of rollers.
Claim 4
Dependent Claim
29 words
An automatic, circumferentially traveling mechanism as defined in claim 2, wherein the ends of said flexible body are secured by extensible joints to said at least one welding device.
Claim 5
Dependent Claim
29 words
An automatic, circumferentially traveling mechanism as defined in claim 1, wherein said at least one welding device is a plurality thereof being connected by a plurality of flexible bodies.
Claim 6
Dependent Claim
20 words
An automatic, circumferentially traveling mechanism as defined in claim 3, wherein one of said extensible joints is a compression spring.
Claim 7
Dependent Claim
20 words
An automatic circumferentially traveling mechanism as defined in claim 3, wherein the other of said extensible joints is a turnbuckle.
References Cited (Backward Citations)
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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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |