US3220734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed changer for record players
Assignee: US Philips Corp
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Filing: 1962-04-02
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Granted: 1965-11-30
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Zarm Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:54
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AUTOMATIC SPEED CHANGER APPARATUS FOR A RECORD PLAYER, COMPRISING A RECORD PLAYER HAVING A TURNTABLE AND STEPPED MOTOR SHAFT AND IN WHICH A FRICTION WHEEL IS DISPOSED BETWEEN THE TURNTABLE AND THE STEPPED MOTOR SHAFT OF SAID RECORD PLAYER; THE IMPROVEMENT COMPRISING A SLIDEABLE FEELER MEMBER, MEANS SLIDEABLY SUPPORTING SAID FEELER MEMBER ON SAID RECORD PLAYER FOR ENGAGEMENT BY THE PERIPHERY OF A PHONOGRAPH RECORD AND MOVED THEREBY IN THE DIRECTION OF INSERTION OF A RECORD, MEANS ON SAID RECORD PLAYER FOR SUPPORTING SAID FRICTION WHEEL FOR AXIAL MOVEMENT RELATIVE TO SAID STEPPED MOTOR SHAFT, A CRANK OPERATIVELY CONNECTED WITH SAID FRICTION WHEEL SUPPORTING MEANS FOR IMPARTING SAID AXIAL MOVEMENT THERETO, AND AN ARCHIMEDEAN DRILL STRIP CONNECTED WITH BOTH SAID CRANK AND SAID FEELER MEMBER FOR DRIVING SAID CRANK UPON MOVEMENT OF SAID FEELER MEMBER.
Claim 2
Dependent Claim
135 words
AUTOMATIC SPEED CHANGER APPARATUS FOR A RECORD PLAYER, COMPRISING A RECORD PLAYER HAVING A TURNTABLE AND STEPPED MOTOR SHAFT AND IN WHICH A FRICTION WHEEL IS DISPOSED BETWEEN THE TURNTABLE AND THE STEPPED MOTOR SHAFT OF SAID RECORD PLAYER; THE IMPROVEMENT COMPRISING A SLIDEABLE FEELER MEMBER, MEANS SLIDEABLY SUPPORTING SAID FEELER MEMBER ON SAID RECORD PLAYER FOR ENGAGEMENT BY THE PERIPHERY OF A PHONOGRAPH RECORD AND MOVED THEREBY IN THE DIRECTION OF INSERTION OF A RECORD, MEANS ON SAID RECORD PLAYER FOR SUPPORTING SAID FRICTION WHEEL FOR AXIAL MOVEMENT RELATIVE TO SAID STEPPED MOTOR SHAFT, A CRANK OPERATIVELY CONNECTED WITH SAID FRICTION WHEEL SUPPORTING MEANS FOR IMPARTING SAID AXIAL MOVEMENT THERETO, AND AN ARCHIMEDEAN DRILL STRIP CONNECTED WITH BOTH SAID CRANK AND SAID FEELER MEMBER FOR DRIVING SAID CRANK UPON MOVEMENT OF SAID FEELER MEMBER.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |