US3179752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capstan servo system
Assignee: Ampex Corp
•
Filing: 1960-08-22
•
Granted: 1965-04-20
•
Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Brenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/1808; G11B21/00; G11B21/02; G11B5/00; G11B5/48; G11B5/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
183 words
IN A SPEED CONTROL SYSTEM FOR A MAGNETIC TAPE RECORDER AND REPRODUCER HAVING A WIDEBAND ROTATING HEAD ASSEMBLY, THE COMBINATION COMPRISING A CAPSTAN FOR ENGAGING AND LINEARLY MOVING A MAGNETIC TAPE PAST SAID HEAD ASSEMBLY, A PRIMARY MOTOR HAVING A DRIVE SHAFT IN ALIGNMENT WITH SAID CAPSTAN, A FIRST PULLEY MOUNTED ON THE DRIVE SHAFT OF SAID PRIMARY MOTOR, A DRIVEN SHAFT MOUNTED PARALLEL TO AND OFFSET FROM THE DRIVE SHAFT OF SAID PRIMARY MOTOR AND HAVING A LOWER PULLEY AND AN UPPER PULLEY, A FIRST BELT MOUNTED TO ENGAGE SAID FIRST PULLEY AND SAID LOWER PULLEY, A SECOND PULLEY MOUNTED ON SAID CAPSTAN, A SECOND BELT MOUNTED TO ENGAGE SAID UPPER PULLEY AND SAID SECOND PULLEY, MEANS CONNECTED TO SAID PRIMARY MOTOR FOR ENERGIZING THE MOTOR TO ROTATE SAID CAPSTAN AT A CONSTANT ANGULAR VELOCITY, A SECONDARY MOTOR HAVING A DRIVE SHAFT, A FIRST SERVO PULLEY MOUNTED ON THE DRIVE SHAFT OF SAID SECONDARY MOTOR, SECOND SERVO PULLEY HAVING A CENTRALLY DISPOSED BEARING FOR JOURNALLING ONE END OF SAID CAPSTAN AND AN ECCENTRICALLY DISPOSED BEARING FOR JOURNALLING SAID DRIVEN SHAFT, A SERVO
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |