US3170093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control apparatus
Assignee: Westinghouse Air Brake Co
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Filing: 1962-07-26
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Granted: 1965-02-16
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Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Chalmers W Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:50
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/16; B61L1/163; B61L1/164; B61L1/167; G; G08; G08G; G08G1/00; G08G1/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
MEANS FOR DETECTING A PREDETERMINED SEQUENCE OF ACTUATION TO CIRCUIT CLOSING POSITIONS OF FIRST AND SECOND NORMALLY OPEN CIRCUIT CONTROLLERS, SAID MEANS, COMPRISING, IN COMBINATION: (A) A CAPACITOR, (B) A SOURCE OF DIRECT CURRENT ENERGY, (C) ELECTRICAL CONTACT CONTROLLING MEANS ACTUATED ONLY WHEN DIRECT CURRENT ENERGY IS SUPPLIED THERETO IN A PREDETERMINED DIRECTION, (D) FIRST CIRCUIT MEANS RESPONSIVE TO AN ACTUATION OF SAID FIRST CIRCUIT CONTROLLER PRIOR TO AN ACTUATION OF SAID SECOND CIRCUIT CONTROLLER FOR SUPPLYING DIRECT CURRENT ENERGY FROM SAID SOURCE TO SAID CONTACT CONTROLLING MEANS INA DIRECTION OPPOSITE TO SAID PREDETERMINED DIRECTION AND AT THE SAME TIME TO SAID CAPACITOR FOR CHARGING THEREOF, AND (E) SECOND CIRCUIT MEANS RESPONSIVE THEREAFTER TO AN ACTUATION OF SAID SECOND CIRCUIT CONTROLLER FOR DISCHARGING SAID CAPACITOR THROUGH SAID CONTACT CONTROLLING MEANS IN SAID PREDETERMINED DIRECTION.
Claim 2
Dependent Claim
134 words
MEANS FOR DETECTING A PREDETERMINED SEQUENCE OF ACTUATION TO CIRCUIT CLOSING POSITIONS OF FIRST AND SECOND NORMALLY OPEN CIRCUIT CONTROLLERS, SAID MEANS, COMPRISING, IN COMBINATION: (A) A CAPACITOR, (B) A SOURCE OF DIRECT CURRENT ENERGY, (C) ELECTRICAL CONTACT CONTROLLING MEANS ACTUATED ONLY WHEN DIRECT CURRENT ENERGY IS SUPPLIED THERETO IN A PREDETERMINED DIRECTION, (D) FIRST CIRCUIT MEANS RESPONSIVE TO AN ACTUATION OF SAID FIRST CIRCUIT CONTROLLER PRIOR TO AN ACTUATION OF SAID SECOND CIRCUIT CONTROLLER FOR SUPPLYING DIRECT CURRENT ENERGY FROM SAID SOURCE TO SAID CONTACT CONTROLLING MEANS INA DIRECTION OPPOSITE TO SAID PREDETERMINED DIRECTION AND AT THE SAME TIME TO SAID CAPACITOR FOR CHARGING THEREOF, AND (E) SECOND CIRCUIT MEANS RESPONSIVE THEREAFTER TO AN ACTUATION OF SAID SECOND CIRCUIT CONTROLLER FOR DISCHARGING SAID CAPACITOR THROUGH SAID CONTACT CONTROLLING MEANS IN SAID PREDETERMINED DIRECTION.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |