Actuator employing unidirectional motor for bidirectional rotati

Details Actuator employing unidirectional motor for bidirectional rotati Actuator employing unidirectional motor for bidirectional rotati

1992-12-30

1994-11-08

Shoop, Jr., William M.

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318634, 318641, 431 20, 236 1G, 236 93R, F23C 1100, G05D 2300

Patent

active

053630254

ABSTRACT:
An actuator employing a unidirectional electric motor driving a first rotating member connected to a second rotating member through a pivotable link of which a first end is connected to the first rotating member at a smaller distance from its axis of rotation than the distance between the point at which the second end is connected to the second rotating member and its axis of rotation. An enegerization circuit includes first and second limit switches through which the motor is alternately energized to rotate the second men%her in opposite directions to first and second limiting positions respectively.

REFERENCES:
patent: 4071190 (1978-01-01), Ford, Jr.
patent: 4205783 (1980-06-01), Dietsche et al.
patent: 4225080 (1980-09-01), Barth
patent: 4251024 (1981-02-01), Feinberg
patent: 4265394 (1981-05-01), Nagel
patent: 4462539 (1984-07-01), Gilson
D80B, D Automatic Vent Damper, Honeywell Inc. Product Manual, Nov. 1992.

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