Patent US2334880A successfully refreshed from Google Patents.
Patent US3570080A successfully refreshed from Google Patents.
US3570080A
Expired / Lapsed
US
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Cloth shearing machine with automatic tension control
Assignee: Riggs and Lombard Inc
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Filing: 1969-01-23
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Granted: 1971-03-16
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Expires: 1989-01-23
Abstract
Abstract A CLOTH SHEARING MACHINE IS PROVIDED WITH A SELFCOMPENSATING TENSION CONTROL SYSTEM TO MAINTAIN A CONSTANT AND UNIFORM TENSION ON A RUNNING CLOTH WEB AS IT PASSES THROUGH THE MACHINE. THE SPEED OF INDEPENDENTLY DRIVEN DRAFT ROLLS IS RESPONSIVE TO THE MOVEMENT OF AN ASSOCIATED SENSING ROLL WHICH ENGAGES THE WEB AND MOVES UPON CHANGES IN TENSION OF THE WEB. EACH SENSING ROLLER IS OPERATIVELY CONNECTED TO A DRAFT ROLL TO CONTROL ITS SPEED OF OPERATION.
Inventors
- 👤 William J Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:11
CPC Classifications
D; D06; D06C; D06C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |