US3218397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recorder apparatus
Assignee: 3M Co
•
Filing: 1960-03-11
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Granted: 1965-11-16
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Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Pastor Sheldon Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:19
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/02; G11B15/05; G11B15/06; G11B15/10; G11B15/26; G11B15/28; G11B15/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A TAPE RECORDER HAVING A ROTATING CAPSTAN AND A PRESSURE ROLLER MOVABLE INTO AND OUT OF ENGAGEMENT THEREWITH FOR STARTING, MAINTAINING AND STOPPING FORWARD TAPE DRIVE, THE COMBINATION COMPRISING A SUPPORT, A FIRST MEANS MOVABLE WITH RESPECT TO SAID SUPPORT AND CARRYING SAID PRESSURE ROLLER IN EFFECTIVE RELATION WITH SAID CAPSTAN, BIAS MEANS URGING SAID PRESSURE ROLLER TOWARD SAID CAPSTAN, A MOVABLE SECOND MEANS IN CLOSE PROXIMITY TO SAID CAPSTAN, SAID SECOND MEANS COMPRISING A CIRCULAR MEMBER MOUNTED FOR ROTATION ON SAID FIRST MEANS, THE AXIS OF ROTATION OF SAID CIRCULAR MEMBER BEING OFF-CENTER, SAID SECOND MEANS ENGAGEABLE WITH SAID CAPSTAN AND DRIVEN THEREBY
Claim 2
Dependent Claim
105 words
IN A TAPE RECORDER HAVING A ROTATING CAPSTAN AND A PRESSURE ROLLER MOVABLE INTO AND OUT OF ENGAGEMENT THEREWITH FOR STARTING, MAINTAINING AND STOPPING FORWARD TAPE DRIVE, THE COMBINATION COMPRISING A SUPPORT, A FIRST MEANS MOVABLE WITH RESPECT TO SAID SUPPORT AND CARRYING SAID PRESSURE ROLLER IN EFFECTIVE RELATION WITH SAID CAPSTAN, BIAS MEANS URGING SAID PRESSURE ROLLER TOWARD SAID CAPSTAN, A MOVABLE SECOND MEANS IN CLOSE PROXIMITY TO SAID CAPSTAN, SAID SECOND MEANS COMPRISING A CIRCULAR MEMBER MOUNTED FOR ROTATION ON SAID FIRST MEANS, THE AXIS OF ROTATION OF SAID CIRCULAR MEMBER BEING OFF-CENTER, SAID SECOND MEANS ENGAGEABLE WITH SAID CAPSTAN AND DRIVEN THEREBY
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |