US3724735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for driving or braking a strip
Assignee: Creusot Loire SA
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Filing: 1971-04-07
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Granted: 1973-04-03
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Expires: 1991-04-07
Abstract
Abstract A system to apply a strip to a roller including a shoe movable radially toward the roller in the region where the strip will engage the roller, a jack to move the shoe and means to inject a fluid between the shoe and strip to transfer the force of the jack to the strip while keeping the shoe clear of the strip.
Inventors
- 👤 P Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:11
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/24; B21; B21B; B21B39/00; B21B39/02; B21B39/08; B21C; B21C47/00; B21C47/003; B21D; B21D1/00; B21D1/05; B65G; B65G23/00; B65G2812/00; B65G2812/02; B65G2812/02128; B65G2812/02138; B65G2812/02148; B65H2301/00; B65H2301/50; B65H2301/51; B65H2301/517
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A system for driving a strip comprising a roller for receiving a strip, a shoe movable radially toward the roller in the region in which the strip is received, and means for injecting compressed air radially inward of said shoe against said strip, a fixed frame movably supporting said shoe, a jack moving said shoe in said frame whereby when compressed air is applied between said shoe and said strip on said roller, said strip is applied against said roller with a force equal to that exerted by said jack on said shoe, the compressed air forming a very thin fluid cushion and providing a very small clearance between said shoe and said strip preventing rubbing of said shoe on said strip.
Claim 2
Independent Claim
122 words
A system for driving a strip comprising a roller for receiving a strip, a shoe movable radially toward the roller in the region in which the strip is received, and means for injecting compressed air radially inward of said shoe against said strip, a fixed frame movably supporting said shoe, a jack moving said shoe in said frame whereby when compressed air is applied between said shoe and said strip on said roller, said strip is applied against said roller with a force equal to that exerted by said jack on said shoe, the compressed air forming a very thin fluid cushion and providing a very small clearance between said shoe and said strip preventing rubbing of said shoe on said strip.
Claim 3
Dependent Claim
26 words
A system according to claim 1, said means for injecting pressure fluid between said shoe and said strip including a valve providing an adjustable pressure loss.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |