US3414741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems
Assignee: Vickers Inc
•
Filing: 1965-03-12
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Granted: 1968-12-03
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Expires: 1985-03-12
Abstract
No abstract record available.
Inventors
- 👤 Owen E Reinert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:52
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/04; H02H5/042; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/569; G05F1/573; H02H7/00; H02H7/10; H02H7/12; H02H7/122; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A CONTROL SYSTEM WHICH INCLUDES A CURRENT-CONTROLLING ELEMENT AND A PROTECTIVE ARRANGEMENT THEREFOR AND WHICH COMPRISES: (A) A CURRENT-CONTROLLING ELEMENT WITH A RECESS THEREIN, (B) A THERMISTOR MOUNTED IN SAID RECESS IN SAID CURRENTCONTROLLING ELEMENT, AND THUS IN INTIMATE HEAT-TRANSFERRING RELATION WITH SAID CURRENT-CONTROLLING ELEMENT, (C) A CIRCUIT THAT DETERMINES THE CONDUCTIVITY OF SAID CURRENT-CONTROLLING ELEMENT, (D) A CONNECTION BETWEEN SAID THERMISTOR AND SAID CIRCUIT WHICH ENABLES A PREDETERMINED CHANGE IN THE RESISTANCE OF SAID THERMISTOR TO DECREASE THE CURRENT FLOWING THROUGH SAID CURRENT-CONTROLLING ELEMENT, (E) SAID THERMISTOR AND SAID CIRCUIT RESPONDING TO HEATING OF SAID CURRENT-CONTROLLING ELEMENT TO REDUCE THE CURRENT FLOWING THROUGH SAID CURRENT-CONTROLLING ELEMENT WHILE PERMITTING SAID CURRENT-CONTROLLING ELEMENT TO BE CONDUCTIVE.
Claim 2
Dependent Claim
115 words
A CONTROL SYSTEM WHICH INCLUDES A CURRENT-CONTROLLING ELEMENT AND A PROTECTIVE ARRANGEMENT THEREFOR AND WHICH COMPRISES: (A) A CURRENT-CONTROLLING ELEMENT WITH A RECESS THEREIN, (B) A THERMISTOR MOUNTED IN SAID RECESS IN SAID CURRENTCONTROLLING ELEMENT, AND THUS IN INTIMATE HEAT-TRANSFERRING RELATION WITH SAID CURRENT-CONTROLLING ELEMENT, (C) A CIRCUIT THAT DETERMINES THE CONDUCTIVITY OF SAID CURRENT-CONTROLLING ELEMENT, (D) A CONNECTION BETWEEN SAID THERMISTOR AND SAID CIRCUIT WHICH ENABLES A PREDETERMINED CHANGE IN THE RESISTANCE OF SAID THERMISTOR TO DECREASE THE CURRENT FLOWING THROUGH SAID CURRENT-CONTROLLING ELEMENT, (E) SAID THERMISTOR AND SAID CIRCUIT RESPONDING TO HEATING OF SAID CURRENT-CONTROLLING ELEMENT TO REDUCE THE CURRENT FLOWING THROUGH SAID CURRENT-CONTROLLING ELEMENT WHILE PERMITTING SAID CURRENT-CONTROLLING ELEMENT TO BE CONDUCTIVE.
References Cited (Backward Citations)
US3293540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |