US3225615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive drive mechanism
Assignee: Individual
•
Filing: 1962-06-14
•
Granted: 1965-12-28
•
Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert K Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:26
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/20; F16H3/36; F16H3/366; F16H1/00; F16H7/00; F16H7/02; F16H7/023; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1966; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
A POSITIVE DRIVE MECHANISM, COMPRISING A PLURALITY OF COACTABLY DISPOSED DRIVE ELEMENTS, DRIVE SUFACES ON EACH OF SAID DRIVE ELEMENTS, A PLURALITY OF SPACED PROJECTIONS ON AT LEAST ONE OF SAID DRIVE ELEMENT SURFACES, ONE SURFACE COMPRISING AN ELASTIC LAYER, SAID PROJECTIONS ENGAGING WITH SAID ELASTIC LAYER AND PRODUCING ELASTIC DEFORMATIONS IN SAID ELASTIC LAYER UPON COACTION OF SAID DRIVE ELEMENTS, SAID ELASTIC LAYER HAVING DELAYED ELASTIC RECOVERY PROPERTIES WHICH PROLONG SAID DEFORMATIONS IN SUBSTANTIALLY UNRECOVERED FORM TO PERMIT REENGAGEMENT OF ONES OF SAID PROJECTIONS WITH ONES OF SAID DEFORMATIONS, THE ELASTICITY OF SAID LAYER PROVIDING A COMPLETE RECOVERY OF SAID DEFORMATIONS ABSENT REENGAGEMENT OF ONES OF SAID PROJECTIONS WITH ONES OF SAID DEFORMATIONS, COACTION OF SAID ELEMENTS AND ENGAGEMENT OF SAID PROJECTIONS WITH SAID ELASTIC LAYER DEFORMATIONS PROVIDING A POSITIVE DRIVE EFFECT BETWEEN SAID DRIVE ELEMENTS.
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |