US3133449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Idler wheel for variable speed record turntable drive
Assignee: V M Corp
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Filing: 1961-07-31
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Granted: 1964-05-19
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Robert L Van Antwerp
- 👤 Harbor Benton
- 👤 Ralph E Freathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:37
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A VARIABLE SPEED RECORD TURNTABLE DRIVE OF THE TYPE HAVING A MOTOR DRIVEN STEPPED DRIVING PULLEY AND SPEED CHANGING MECHANISM FOR MOVING AN IDLER WHEEL AXIALLY INTO SIMULTANEOUS ENGAGEMENT WITH A SELECTED ONE OF A PLURALITY OF STEPS ON SAID PULLEY AND WITH A PHONOGRAPH TURNTABLE TO DRIVE THE LATTER AT A PREDETERMINED SPEED, THE IMPROVEMENT COMPRISING AN IDLER WHEEL INCLUDING A HUB MEMBER, A BEARING MEMBER SECURED TO SAID HUB FOR MOUNTING THE SAME ON SAID SPEED CHANGING MECHANISM, AND AN ANNULAR TIRE SECURED AT THE RIM OF SAID HUB, SAID TIRE HAVING A CIRCUMFERENTIAL BEVEL DISPOSED TOWARD THE LARGER STEPS ON SAID PULLEY TO FACILITATE OPERATION OF SAID SPEED CHANGING MECHANISM TO INCREASE SPEED AND TO PROVIDE A RELATIVELY THIN AND RESILIENT RADIALLY OUTER PORTION FOR ENGAGEMENT WITH SAID PULLEY AND A RELATIVELY THICK RADIALLY INNER SUPPORTING PORTION ADJACENT SAID HUB RIM, SAID BEVEL BEING FORMED AT AN ANGLE OF BETWEEN APPROXIMATELY 30 DEGREES AND 45 DEGREES WITH RESPECT TO THE PLANE OF SAID IDLER WHEEL.
Claim 2
Dependent Claim
169 words
IN A VARIABLE SPEED RECORD TURNTABLE DRIVE OF THE TYPE HAVING A MOTOR DRIVEN STEPPED DRIVING PULLEY AND SPEED CHANGING MECHANISM FOR MOVING AN IDLER WHEEL AXIALLY INTO SIMULTANEOUS ENGAGEMENT WITH A SELECTED ONE OF A PLURALITY OF STEPS ON SAID PULLEY AND WITH A PHONOGRAPH TURNTABLE TO DRIVE THE LATTER AT A PREDETERMINED SPEED, THE IMPROVEMENT COMPRISING AN IDLER WHEEL INCLUDING A HUB MEMBER, A BEARING MEMBER SECURED TO SAID HUB FOR MOUNTING THE SAME ON SAID SPEED CHANGING MECHANISM, AND AN ANNULAR TIRE SECURED AT THE RIM OF SAID HUB, SAID TIRE HAVING A CIRCUMFERENTIAL BEVEL DISPOSED TOWARD THE LARGER STEPS ON SAID PULLEY TO FACILITATE OPERATION OF SAID SPEED CHANGING MECHANISM TO INCREASE SPEED AND TO PROVIDE A RELATIVELY THIN AND RESILIENT RADIALLY OUTER PORTION FOR ENGAGEMENT WITH SAID PULLEY AND A RELATIVELY THICK RADIALLY INNER SUPPORTING PORTION ADJACENT SAID HUB RIM, SAID BEVEL BEING FORMED AT AN ANGLE OF BETWEEN APPROXIMATELY 30 DEGREES AND 45 DEGREES WITH RESPECT TO THE PLANE OF SAID IDLER WHEEL.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |