Patent US4767386B1 successfully refreshed from Google Patents.
US4767386B1
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Flexible-element transmission unit for driving rotary members in general
Assignee: SPAL Automotive SRL
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Filing: 1986-04-22
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Granted: 1999-10-19
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Expires: 2006-04-22
Abstract
Abstract A transmission unit comprises a flexible element (1) in the form of a flexible metal wire (6) on which a plurality of small equidistant coaxial cylindrical bodies (8) are fixed; the element (1) passes endlessly about two opposing drive and driven sprocket wheels (2), (3) respectively, and the two outward and return portions of said element (1) are slidingly received in two flexible sheaths (10); the two sprocket wheels (2), (3) are rotatably mounted in respective casings (4), (5) in which the opposing ends of said two flexible sheaths (10) are clamped.
Inventors
- 👤 Alessandro Spaggiari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:14
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/06
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) | 2002-10-18 | 2003-04-19 | 2003-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-18 | 2007-04-19 | 2007-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-18 | 2011-04-19 | 2011-10-19 | $7700.00 | Window Closed / Lapsed |