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Patent US3588656A successfully refreshed from Google Patents.
US3588656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Programmable electromechanical oscillator
Assignee: University of Tennessee Research Foundation
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Filing: 1968-08-07
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Granted: 1971-06-28
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Expires: 1988-08-07
Abstract
Abstract AN ELECTROMECHANICAL OSCILLATOR IS PROVIDED FOR AUTOMATICALLY SHAKING AND MIXING LOW-REACTION RATE CHEMICALS. THE PROGRAMMABLE OSCILLATOR INCLUDES A REVERSIBLE DC DRIVE MOTOR ADAPTED TO BE ENERGIZED TO SUPPLY BOTH OSCILLATORY AND ROTATIONAL MOTION. OSCILLATORY AND ROTATIONAL MOTION ARE ESTABLISHED BY SELECTIVELY GATING ONE OF A PAIR OF SCR''S TO REVERSE THE SENSE OF ARMATURE CURRENT OF THE DRIVE MOTOR. TIMER AND LATCHING RELAY LOGIC CIRCUITS PROVIDE DESIRED PROGRAMMING OF THE OSCILLATOR ABOUT OR AT A PRESCRIBED ANGULAR POSITION.
Inventors
- 👤 Fred M Shofner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:03
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |