Patent US3305239A successfully refreshed from Google Patents.
US3305239A
Expired / Lapsed
US
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Position trip
Assignee: Zenith Electronics LLC
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Filing: 1964-10-19
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Granted: 1967-02-21
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Richard A Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:55
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/08; G11B17/12; G11B17/16; G11B17/162; G11B17/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A POSITION TRIP FOR A PHONOGRAPH HAVING A TONE ARM WHICH IS PIVOTED NEAR ONE END AND MOVABLE IN A GENERALLY RADIAL PATH BETWEEN AN OUTER DIAMETER AND A RELATED INNER DIAMETER OF THE RECORD TO BE TRANSCRIBED AND FURTHER HAVING AN AUTOMATIC RECORD CHANGE MECHANISM FOR EFFECTUATING A RECORD CHANGE CYCLE COMPRISING: MEANS RESPONSIVE TO SAID RECORD CHANGE MECHANISM FOR SENSING THE MAGNITUDE OF SAID OUTER DIAMETER; FIRST CONTACT MEANS MOVABLE ALONG A PATH IN CORRESPONDENCE TO THE MOVEMENT OF SAID TONE ARM; SECOND CONTACT MEANS DISPOSED IN SAID PATH AT A POSITION PRESCRIBED BY SAID SENSING MEANS; AND ACTUATING MEANS RESPONSIVE TO THE ENGAGEMENT OF SAID FIRST AND SECOND CONTACT MEANS FOR INITIATING SAID CHANGE CYCLE.
Claim 2
Dependent Claim
118 words
A POSITION TRIP FOR A PHONOGRAPH HAVING A TONE ARM WHICH IS PIVOTED NEAR ONE END AND MOVABLE IN A GENERALLY RADIAL PATH BETWEEN AN OUTER DIAMETER AND A RELATED INNER DIAMETER OF THE RECORD TO BE TRANSCRIBED AND FURTHER HAVING AN AUTOMATIC RECORD CHANGE MECHANISM FOR EFFECTUATING A RECORD CHANGE CYCLE COMPRISING: MEANS RESPONSIVE TO SAID RECORD CHANGE MECHANISM FOR SENSING THE MAGNITUDE OF SAID OUTER DIAMETER; FIRST CONTACT MEANS MOVABLE ALONG A PATH IN CORRESPONDENCE TO THE MOVEMENT OF SAID TONE ARM; SECOND CONTACT MEANS DISPOSED IN SAID PATH AT A POSITION PRESCRIBED BY SAID SENSING MEANS; AND ACTUATING MEANS RESPONSIVE TO THE ENGAGEMENT OF SAID FIRST AND SECOND CONTACT MEANS FOR INITIATING SAID CHANGE CYCLE.
References Cited (Backward Citations)
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US2287726A
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US2555478A
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US2762626A
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US2983515A
Cited
US2965377A
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |