US3145758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous forming of metal shapes
Assignee: Mobile Pipe Corp
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Filing: 1961-01-23
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Granted: 1964-08-25
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Douglas L Sprung
- 👤 Clyde W Vassar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/06; B21D5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
FOR USE WITH TRANSITION APPARATUS FOR CONTINUOUSLY FORMING FLAT STRIP MATERIAL TO CHANGE IT TO GENERALLY CYLINDRICAL TUBULAR SHAPE, THE IMPROVEMENT COMPRISING, IN COMBINATION: CONTINUOUS STATIONARY TRACKS EXTENDING IN A DIRECTION GENERALLY LONGITUDINALLY OF THE LENGTH OF THE STRIP MATERIAL AND EACH CURVED TO FOLLOW AN INCLINED AND CURVED PATH CORRESPONDING TO THE PATH OF ONE OF THE MARGINS OF THE STRIP MATERIAL IN CHANGING FROM A FLAT CROSS-SECTION TO A GENERALLY CYLINDRICAL TUBULAR SHAPE, AND FORMING MEANS GUIDED FOR MOVEMENT ALONG SAID TRACKS AND EACH ADAPTED TO CONTACT AND MOVE WITH A MARGIN OF THE STRIP MATERIAL AND WITHOUT RELATIVE MOVEMENT THEREBETWEEN, SAID FORMING MEANS BEING CONTINUOUSLY SUPPORTED BY SAID TRACKS ALONG THE LENGTH THEREOF.
Claim 2
Dependent Claim
116 words
FOR USE WITH TRANSITION APPARATUS FOR CONTINUOUSLY FORMING FLAT STRIP MATERIAL TO CHANGE IT TO GENERALLY CYLINDRICAL TUBULAR SHAPE, THE IMPROVEMENT COMPRISING, IN COMBINATION: CONTINUOUS STATIONARY TRACKS EXTENDING IN A DIRECTION GENERALLY LONGITUDINALLY OF THE LENGTH OF THE STRIP MATERIAL AND EACH CURVED TO FOLLOW AN INCLINED AND CURVED PATH CORRESPONDING TO THE PATH OF ONE OF THE MARGINS OF THE STRIP MATERIAL IN CHANGING FROM A FLAT CROSS-SECTION TO A GENERALLY CYLINDRICAL TUBULAR SHAPE, AND FORMING MEANS GUIDED FOR MOVEMENT ALONG SAID TRACKS AND EACH ADAPTED TO CONTACT AND MOVE WITH A MARGIN OF THE STRIP MATERIAL AND WITHOUT RELATIVE MOVEMENT THEREBETWEEN, SAID FORMING MEANS BEING CONTINUOUSLY SUPPORTED BY SAID TRACKS ALONG THE LENGTH THEREOF.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |