Electricity: motive power systems – Automatic and/or with time-delay means – Plural – diverse conditions or with time-delay means
Patent
1994-04-06
1996-05-21
Cabeca, John W.
Electricity: motive power systems
Automatic and/or with time-delay means
Plural, diverse conditions or with time-delay means
318135, 361 71, 361 54, 307 66, H02P 126, G05F 1613
Patent
active
055192955
ABSTRACT:
An electrically operated actuator stores power in a capacitor for returning the actuator output element to a preselected position upon power failure. The actuator has a controller having input power terminals connected across the capacitor and control terminals for controlling the power applied from the input power terminals to the motor which comprises the actuator's prime mover. A sensor monitors the presence of power provided to the controller's input power terminals. When failure of this power is sensed, the capacitor current flows to the controller, and the sensor applies signals to an override circuit of the controller causing the controller to apply current from the capacitor to the actuator motor in a way which drives the actuator toward the preselected position. A properly selected capacitor is capable of supplying adequate current over a period of time sufficient to return the actuator to the preselected position.
REFERENCES:
patent: 3890494 (1975-06-01), Meshek et al.
patent: 3984753 (1976-10-01), Uchida et al.
patent: 4321661 (1982-03-01), Sano
patent: 4408607 (1983-10-01), Maurer
patent: 4423364 (1983-12-01), Kompelien et al.
patent: 4451743 (1984-05-01), Suzuki et al.
patent: 4481449 (1984-11-01), Rodal
patent: 4560887 (1985-12-01), Schneider
patent: 4607205 (1986-08-01), Kito et al.
patent: 4634953 (1987-01-01), Shoji et al.
patent: 4653931 (1987-03-01), Takeda
patent: 4714352 (1987-12-01), Ganter
patent: 4751653 (1988-06-01), Junk et al.
patent: 4795914 (1989-01-01), Higa et al.
patent: 4833376 (1989-05-01), Shimura
patent: 4890003 (1989-12-01), Seibert et al.
patent: 5012121 (1991-04-01), Hammond et al.
patent: 5021679 (1991-06-01), Fairbanks et al.
patent: 5278454 (1994-01-01), Strauss et al.
Cabeca John W.
Honeywell Inc.
Schwarz Edward L.
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