US4033492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Looper
Assignee: IHI Corp
•
Filing: 1976-04-19
•
Granted: 1977-07-05
•
Expires: 1996-04-19
Abstract
Abstract The invention discloses a looper of the type in which the tension exerted to the strip is controlled in response to the output derived from sensor means attached to a rotatable looper arm for detecting the tension exerted to the strip.
Inventors
- 👤 Isao Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:02
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/10; G01L5/106; B; B21; B21B; B21B37/00; B21B37/48; B21B37/50; B21B39/00; B21B39/02; B21B39/08; G01L5/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2345765A
Cited
US3237439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |