Patent US3085168A successfully refreshed from Google Patents.
US3085168A
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Tuning fork
Assignee: General Electric Co
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Filing: 1960-04-25
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Granted: 1963-04-09
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Albert C Jones
- 👤 Frederick J Lingel
- 👤 Peter B Troup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:34
CPC Classifications
G; G10; G10G; G10G7/00; G10G7/02; H; H03; H03H; H03H9/00; H03H9/46; H03H9/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN ELECTROMAGNETICALLY DRIVEN TUNING FORK COMPRISING A U-SHAPED MEMBER HAVING SPACED TINES FORMED OF A MAGNETICALLY PERMEABLE, RESILIENT MATERIAL AND PICKUP AND DRIVING COILS SUPPORTED BETWEEN THE TINES IN SPACED RELATION ALONG THE LENGTH OF THE TINES, SAID COILS HAVING PERMANENT MAGNET CORES EXTENDING TRANSVERSELY BETWEEN THE TINES SO THAT THE CORE ENDS ARE SPACED FROM THE TINES TO FORM AIR GAPS, SAID CORES BEING POLARIZED TO FORM MAGNET POLES ADJACENT THE ENDS THEREOF WITH THE POLARITY SELECTED SUCH THAT THE MAGNET POLES OF THE CORE ENDS ADJACENT EACH TINE ARE OF OPPOSITE POLARITY WHEREBY A MAGNETIC FLUX PATH IS ESTABLISHED BETWEEN THE CORES THROUGH
Claim 2
Dependent Claim
105 words
AN ELECTROMAGNETICALLY DRIVEN TUNING FORK COMPRISING A U-SHAPED MEMBER HAVING SPACED TINES FORMED OF A MAGNETICALLY PERMEABLE, RESILIENT MATERIAL AND PICKUP AND DRIVING COILS SUPPORTED BETWEEN THE TINES IN SPACED RELATION ALONG THE LENGTH OF THE TINES, SAID COILS HAVING PERMANENT MAGNET CORES EXTENDING TRANSVERSELY BETWEEN THE TINES SO THAT THE CORE ENDS ARE SPACED FROM THE TINES TO FORM AIR GAPS, SAID CORES BEING POLARIZED TO FORM MAGNET POLES ADJACENT THE ENDS THEREOF WITH THE POLARITY SELECTED SUCH THAT THE MAGNET POLES OF THE CORE ENDS ADJACENT EACH TINE ARE OF OPPOSITE POLARITY WHEREBY A MAGNETIC FLUX PATH IS ESTABLISHED BETWEEN THE CORES THROUGH
References Cited (Backward Citations)
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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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |