US3315103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital torque motor
Assignee: Midwestern Instruments Inc
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Filing: 1964-01-10
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Granted: 1967-04-18
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Expires: 1984-01-10
Abstract
No abstract record available.
Inventors
- 👤 Billy E Duff
- 👤 Rex D Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:42
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/10; G; G05; G05D; G05D3/00; G05D3/10; H10; H10N; H10N30/00; H10N30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A CONTROL: SUPPORT MEANS; SHIFTABLE STRUCTURE SPACED FROM THE SUPPORT MEANS AND ADAPTED FOR COUPLING WITH APPARATUS TO BE MECHANICALLY ACTUATED; AND A MEMBER COUPLED WITH SAID SUPPORT MEANS AND SAID STRUCTURE FOR MOVING THE LATTER TOWARD AND AWAY FROM THE SUPPORT MEANS, SAID MEMBER COMPRISING A SERIES OF MECHANICALLY INTERCONNECTED, ELECTROSTRICTIVE ELEMENTS DISPOSED BETWEEN THE STRUCTURE AND SAID SUPPORT MEANS, EACH OF THE ELEMENTS BEING ADAPTED TO HAVE AN ELECTRICAL CONTROL SIGNAL APPLIED THERETO AND BEING CONSTRUCTED AND ARRANGED TO CAUSE CONTRACTION OF THE MEMBER AND PULL THE STRUCTURE
Claim 2
Dependent Claim
91 words
IN A CONTROL: SUPPORT MEANS; SHIFTABLE STRUCTURE SPACED FROM THE SUPPORT MEANS AND ADAPTED FOR COUPLING WITH APPARATUS TO BE MECHANICALLY ACTUATED; AND A MEMBER COUPLED WITH SAID SUPPORT MEANS AND SAID STRUCTURE FOR MOVING THE LATTER TOWARD AND AWAY FROM THE SUPPORT MEANS, SAID MEMBER COMPRISING A SERIES OF MECHANICALLY INTERCONNECTED, ELECTROSTRICTIVE ELEMENTS DISPOSED BETWEEN THE STRUCTURE AND SAID SUPPORT MEANS, EACH OF THE ELEMENTS BEING ADAPTED TO HAVE AN ELECTRICAL CONTROL SIGNAL APPLIED THERETO AND BEING CONSTRUCTED AND ARRANGED TO CAUSE CONTRACTION OF THE MEMBER AND PULL THE STRUCTURE
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |