Patent US3249361A successfully refreshed from Google Patents.
US3249361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical servo tone arm
Assignee: Individual
•
Filing: 1963-04-29
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Granted: 1966-05-03
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Rabinow Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:27
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/36; G11B3/12; G11B3/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A RECORD PLAYER TONE ARM ASSEMBLY, A GUIDE, A TONE ARM SUPPORT MOVABLY MOUNTED ON SAID GUIDE; MECHANICAL SERVO MEANS TO MOVE THE TONE ARM AND SUPPORT ALONG A PREDETERMINED PATH AS THE TONE ARM STYLUS TRACKS THE RECCORD GROOVE; MECHANICAL MOTOR MEANS TO MOVE SAID SUPPORT AND TONE ARM WITH RESPECT TO SAID GUIDE TO MAINTAIN SAID ARM IN A PREDETERMINED RELATIONSHIP TO SAID SUPPORT AS THE STYLUS TRACKS THE GROOVE, AND SAID SERVO MEANS BEING RESPONSIVE TO SAID PREDETERMINED POSITION FOR EXERCISING CONTROL OVER SAID MECHANICAL MOTOR MEANS TO ELIMINATE SKEW BETWEEN THE ARM AND SAID SUPPORT, SAID MECHANICAL MOTOR MEANS INCLUDING MEANS TO STORE MECHANICAL ENERGY IN RESPONSE TO MOVEMENT OF SAID SUPPORT IN ONE DIRECTION RELATIVE TO SAID GUIDE, AND MEANS DRIVEN BY SAID STORED MECHANICAL ENERGY TO MOVE SAID SUPPORT AT A RATE CONTROLLED BY SAID SERVO MEANS.
Claim 2
Dependent Claim
144 words
IN A RECORD PLAYER TONE ARM ASSEMBLY, A GUIDE, A TONE ARM SUPPORT MOVABLY MOUNTED ON SAID GUIDE; MECHANICAL SERVO MEANS TO MOVE THE TONE ARM AND SUPPORT ALONG A PREDETERMINED PATH AS THE TONE ARM STYLUS TRACKS THE RECCORD GROOVE; MECHANICAL MOTOR MEANS TO MOVE SAID SUPPORT AND TONE ARM WITH RESPECT TO SAID GUIDE TO MAINTAIN SAID ARM IN A PREDETERMINED RELATIONSHIP TO SAID SUPPORT AS THE STYLUS TRACKS THE GROOVE, AND SAID SERVO MEANS BEING RESPONSIVE TO SAID PREDETERMINED POSITION FOR EXERCISING CONTROL OVER SAID MECHANICAL MOTOR MEANS TO ELIMINATE SKEW BETWEEN THE ARM AND SAID SUPPORT, SAID MECHANICAL MOTOR MEANS INCLUDING MEANS TO STORE MECHANICAL ENERGY IN RESPONSE TO MOVEMENT OF SAID SUPPORT IN ONE DIRECTION RELATIVE TO SAID GUIDE, AND MEANS DRIVEN BY SAID STORED MECHANICAL ENERGY TO MOVE SAID SUPPORT AT A RATE CONTROLLED BY SAID SERVO MEANS.
References Cited (Backward Citations)
US2915315A
Cited
US3129946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |