US3173058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1961-04-28
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Granted: 1965-03-09
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Robert L Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:04
CPC Classifications
H; H02; H02P; H02P9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN COMBINATION, A FIRST ROTATABLE SHAFT AND A SECOND ROTATALE SHAFT, A SINGLE BALANCED ELECTRICAL BRIDGE CIRCUIT HAVING A FIRST PAIR OF SERIALLY CONNECTED LEGS AND A SECOND PAIR OF SERIALLY CONNECTED LEGS, MEANS INTERCONNECTED BETWEEN SAID FIRST PAIR OF LEGS AND SAID SECOND PAIR OF LEGS FOR SENSING THE CONDITION OF BALANCE AND UNBALANCE IN SAID BRIDGE CIRCUIT, MEANS PROVIDED ON SAID FIRST AND SECOND SHAFTS FOR UNBALANCING SAID BRIDGE CIRCUIT WHEN SAID FIRST AND SECOND SHAFTS ARE DISPOSED IN THE SAME ROTATIVE POSITIONS, AND SAID SENSING MEANS INCLUDING AN ELECTRIC RELAY FOR SENSING THE UNBALANCE IN SAID BRIDGE CIRCUIT WHEN SAID SHAFTS ARE IN THE SAME ROTATIVE POSITIONS.
Claim 2
Dependent Claim
110 words
IN COMBINATION, A FIRST ROTATABLE SHAFT AND A SECOND ROTATALE SHAFT, A SINGLE BALANCED ELECTRICAL BRIDGE CIRCUIT HAVING A FIRST PAIR OF SERIALLY CONNECTED LEGS AND A SECOND PAIR OF SERIALLY CONNECTED LEGS, MEANS INTERCONNECTED BETWEEN SAID FIRST PAIR OF LEGS AND SAID SECOND PAIR OF LEGS FOR SENSING THE CONDITION OF BALANCE AND UNBALANCE IN SAID BRIDGE CIRCUIT, MEANS PROVIDED ON SAID FIRST AND SECOND SHAFTS FOR UNBALANCING SAID BRIDGE CIRCUIT WHEN SAID FIRST AND SECOND SHAFTS ARE DISPOSED IN THE SAME ROTATIVE POSITIONS, AND SAID SENSING MEANS INCLUDING AN ELECTRIC RELAY FOR SENSING THE UNBALANCE IN SAID BRIDGE CIRCUIT WHEN SAID SHAFTS ARE IN THE SAME ROTATIVE POSITIONS.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |