US3702689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for gripping and pulling an elongated flexible element
Assignee: HIT HEBEZEUG INDUSTRIE THUN AG
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Filing: 1971-01-06
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Granted: 1972-11-14
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Expires: 1991-01-06
Abstract
Abstract TWO PAIRS OF JAWS ARE PROVIDED IN LINE IN A SINGLE HOUSING, EACH PAIR BEING ADAPTED TO WORK IN ALTERNATION WITH THE OTHER AND EACH IN TURN GRIPPING AND MOVING THE ELONGATED FLEXIBLE ELEMENT AND THEN RELEASING IT AND MOVING ALONG THE SAME TO RENEW ITS GRIP, FOR EFFECTING A DISPLACEMENT OF A LOAD OR WEIGHT ATTACHED FOR INSTANCE TO ONE END OF THE ELEMENT OR, FOR SIMILAR PURPOSES. THE JAWS ARE CONNECTED WITH LINKAGES TO CONSTITUTE WITH THE SAME MOVABLE PARALLELOGRAMS WHICH GRIP THE ELEMENT UNDER THE INFLUENCE OF TRACTION ON THE SAME IN SUCH A MANNER THAT WITH INCREASING LOAD THE GRIPPING FORCE INCREASES, BUT TO A PROPORTIONATELY SMALLED EXTENT.
Inventors
- 👤 Alfred Zeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:22
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/02; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394; Y10T24/3949
Claims Analysis
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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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |