Patent US3139281A successfully refreshed from Google Patents.
US3309933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam shaft drive assembly
Assignee: 3M Co
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Filing: 1964-07-13
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Granted: 1967-03-21
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Pastor Sheldon Lee
- 👤 Rudolph A Rom
- 👤 Zarr Myron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:02
CPC Classifications
F; F16; F16H; F16H29/00; F16H29/02; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1518; Y10T74/1523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN COMBINATION, A DRIVE SHAFT, AN ARM MOUNTED FOR PIVOTAL MOVEMENT ON AN AXIS PARALLEL WITH THAT OF SAID DRIVE SHAFT, AN ECCENTRIC CIRCULAR CAM MOUNTED ON SAID ARM FOR ROTATION ON AN AXIS PARALLEL WITH THAT OF SAID DRIVE SHAFT, MEANS BIASING SAID CAM TOWARD ENGAGEMENT WITH SAID DRIVE SHAFT, ROTATION OF SAID DRIVE SHAFT WHILE SAID CAM IS ENGAGED THEREWITH EFFECTING ROTATION OF SAID CAM AND OSCILLATORY MOVEMENT OF SAID ARM, A CAM SHAFT, A DRIVING CONNECTION FOR EFFECTING ROTATION OF SAID CAM SHAFT IN RESPONSE TO OSCILLATORY MOVEMENT OF SAID ARM, SAID DRIVING CONNECTION COMPRISING A SINGLE DIRECTION CLUTCH HAVING AN OSCILLATABLE FIRST MEMBER CONNECTED TO SAID ARM, AND A COOPERATING SECOND MEMBER FIXED TO SAID CAM SHAFT, RELEASABLE HOLDING MEANS ASSOCIATED WITH SAID ARM FOR HOLDING THE LATTER SUBSTANTIALLY IN ITS RETRACTED POSITION FARTHEST FROM SAID DRIVE SHAFT WHEN MOVED TO SAID RETRACTED POSITION , AND CONTROL MEANS INCLUDING AN INDEXING CAM CARRIED BY SAID CAM SHAFT FOR ENGAGEMENT BY SAID HOLDING MEANS FOR RENDERING SAID HOLDING MEANS OPERATIVE OR INOPERATIVE TO HOLD THE ARM RETRACTED WHEN SAID CAM SHAFT REACHES PRESELECTED POSITIONS.
Claim 2
Dependent Claim
187 words
IN COMBINATION, A DRIVE SHAFT, AN ARM MOUNTED FOR PIVOTAL MOVEMENT ON AN AXIS PARALLEL WITH THAT OF SAID DRIVE SHAFT, AN ECCENTRIC CIRCULAR CAM MOUNTED ON SAID ARM FOR ROTATION ON AN AXIS PARALLEL WITH THAT OF SAID DRIVE SHAFT, MEANS BIASING SAID CAM TOWARD ENGAGEMENT WITH SAID DRIVE SHAFT, ROTATION OF SAID DRIVE SHAFT WHILE SAID CAM IS ENGAGED THEREWITH EFFECTING ROTATION OF SAID CAM AND OSCILLATORY MOVEMENT OF SAID ARM, A CAM SHAFT, A DRIVING CONNECTION FOR EFFECTING ROTATION OF SAID CAM SHAFT IN RESPONSE TO OSCILLATORY MOVEMENT OF SAID ARM, SAID DRIVING CONNECTION COMPRISING A SINGLE DIRECTION CLUTCH HAVING AN OSCILLATABLE FIRST MEMBER CONNECTED TO SAID ARM, AND A COOPERATING SECOND MEMBER FIXED TO SAID CAM SHAFT, RELEASABLE HOLDING MEANS ASSOCIATED WITH SAID ARM FOR HOLDING THE LATTER SUBSTANTIALLY IN ITS RETRACTED POSITION FARTHEST FROM SAID DRIVE SHAFT WHEN MOVED TO SAID RETRACTED POSITION , AND CONTROL MEANS INCLUDING AN INDEXING CAM CARRIED BY SAID CAM SHAFT FOR ENGAGEMENT BY SAID HOLDING MEANS FOR RENDERING SAID HOLDING MEANS OPERATIVE OR INOPERATIVE TO HOLD THE ARM RETRACTED WHEN SAID CAM SHAFT REACHES PRESELECTED POSITIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |