US3138037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential rotation mechanism
Assignee: Individual
•
Filing: 1961-04-21
•
Granted: 1964-06-23
•
Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Schumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:43
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; G; G05; G05G; G05G7/00; G05G7/02; G05G2700/00; G05G2700/12; G05G2700/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T74/00; Y10T74/20; Y10T74/20558; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A DIFFERENTIAL ROTATION MECHANISM FOR A SHAFT EXTENDING THROUGH A BASE, COMPRISING AN OPERATING ARM ROTATABLE ON THE BASE ABOUT THE AXIS OF SAID SHAFT, A FIRST PIVOT ON THE OPERATING ARM SPACED FROM THE AXIS OF THE SHAFT, AN ACTUATING ARM FIXED TO SAID SHAFT FOR ROTATION THEREWITH, A SECOND PIVOT ON THE ACTUATING ARM SPACED FROM THE AXIS OF THE SHAFT, A CAM ON ONE OF THE ARMS, MEANS FIXED TO THE BASE FOR SUPPORTING A THIRD PIVOT, SAID THIRD PIVOT HAVING AN END SLIDABLE IN THE SUPPORTING MEANS, A PIN EXTENDING BETWEEN THE SAID END OF THE THIRD PIVOT AND THE CAM, SAID PIN BEING BIASED AGAINST THE CAM TO VARY THE POSITION OF THE SLIDABLE THIRD PIVOT ON ITS FIXED SUPPORTING MEANS; AND AN ELONGATED LINK CONNECTING ALL OF SAID PIVOTS AND HAVING OPENINGS ELONGATED LENGTHWISE OF THE LINK FOR BOTH ROTATABLY AND SLIDABLY RECEIVING TWO OF SAID PIVOTS.
Claim 2
Dependent Claim
153 words
A DIFFERENTIAL ROTATION MECHANISM FOR A SHAFT EXTENDING THROUGH A BASE, COMPRISING AN OPERATING ARM ROTATABLE ON THE BASE ABOUT THE AXIS OF SAID SHAFT, A FIRST PIVOT ON THE OPERATING ARM SPACED FROM THE AXIS OF THE SHAFT, AN ACTUATING ARM FIXED TO SAID SHAFT FOR ROTATION THEREWITH, A SECOND PIVOT ON THE ACTUATING ARM SPACED FROM THE AXIS OF THE SHAFT, A CAM ON ONE OF THE ARMS, MEANS FIXED TO THE BASE FOR SUPPORTING A THIRD PIVOT, SAID THIRD PIVOT HAVING AN END SLIDABLE IN THE SUPPORTING MEANS, A PIN EXTENDING BETWEEN THE SAID END OF THE THIRD PIVOT AND THE CAM, SAID PIN BEING BIASED AGAINST THE CAM TO VARY THE POSITION OF THE SLIDABLE THIRD PIVOT ON ITS FIXED SUPPORTING MEANS; AND AN ELONGATED LINK CONNECTING ALL OF SAID PIVOTS AND HAVING OPENINGS ELONGATED LENGTHWISE OF THE LINK FOR BOTH ROTATABLY AND SLIDABLY RECEIVING TWO OF SAID PIVOTS.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |