Patent US3407292A successfully refreshed from Google Patents.
US3407292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resolver system
Assignee: Computing Devices of Canada Ltd
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Filing: 1966-03-11
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Granted: 1968-10-22
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 William J G Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:01
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20; G06; G06G; G06G7/00; G06G7/12; G06G7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A RESOLVER SYSTEM COMPRISING, A RESOLVER HAVING A PAIR OF INPUT WINDINGS ARRANGED IN SPACE QUADRATURE AND AN OUTPUT WINDING VARIABLY POSITIONABLE WITH RESPECT TO SAID INPUT WINDINGS, DIFFERENTIAL APPARATUS HAVING A FIRST AND A SECOND INPUT SHAFT AND AN OUTPUT SHAFT, SAID OUTPUT SHAFT POSITIONING SAID OUTPUT WINDING OF SAID RESOLVER, A FIRST DRIVE SYSTEM ROTATING SAID FIRST INPUT SHAFT AT A CONSTANT SPEED, AND A SECOND DRIVE SYSTEM CONNECTED BETWEEN SAID OUTPUT WINDING AND SAID SECOND INPUT SHAFT RESPONSIVE TO ELECTRICAL SIGNALS ON SAID OUTPUT WINDING TO ROTATE SAID SECOND INPUT SHAFT AT A SPEED PROPORTIONAL TO SAID ELECTRICAL SIGNALS.
Claim 2
Dependent Claim
102 words
A RESOLVER SYSTEM COMPRISING, A RESOLVER HAVING A PAIR OF INPUT WINDINGS ARRANGED IN SPACE QUADRATURE AND AN OUTPUT WINDING VARIABLY POSITIONABLE WITH RESPECT TO SAID INPUT WINDINGS, DIFFERENTIAL APPARATUS HAVING A FIRST AND A SECOND INPUT SHAFT AND AN OUTPUT SHAFT, SAID OUTPUT SHAFT POSITIONING SAID OUTPUT WINDING OF SAID RESOLVER, A FIRST DRIVE SYSTEM ROTATING SAID FIRST INPUT SHAFT AT A CONSTANT SPEED, AND A SECOND DRIVE SYSTEM CONNECTED BETWEEN SAID OUTPUT WINDING AND SAID SECOND INPUT SHAFT RESPONSIVE TO ELECTRICAL SIGNALS ON SAID OUTPUT WINDING TO ROTATE SAID SECOND INPUT SHAFT AT A SPEED PROPORTIONAL TO SAID ELECTRICAL SIGNALS.
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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |