Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
Patent
1989-09-13
1990-05-01
Ro, Bentsu
Electricity: motive power systems
Automatic and/or with time-delay means
Responsive to thermal conditions
318468, 165 28, 165 43, B60H 100
Patent
active
049221710
ABSTRACT:
A motor actuator for use in an automobile air-conditioner for actuating air-mix door, includes an electric circuit for controlling the rotational speed of a motor depending on various conditions such, for example, as a vehicle compartment temperature, and a mechanical limit switch for limiting or restricting the extent of angular movement of the air-mix door, or an electric circuit for the limitation of the angular movement of the air-mix door. According to a preferred embodiment, a built-in switching unit having a mechanical switch disposed in a first housing for producing control signals for various components for the air-conditioner, and a motor actuator having a motor and an electric circuit disposed in a second housing are detachably assembled together by a locking lug and a mating retainer recess.
REFERENCES:
patent: 3826963 (1974-07-01), Lorenz
patent: 4381480 (1983-04-01), Hara et al.
patent: 4476919 (1984-10-01), Akimoto et al.
patent: 4685508 (1987-08-01), Iida
patent: 4829884 (1989-05-01), Kagohata
patent: 4834283 (1989-05-01), Akabane et al.
Diesel Kiki Co. Ltd.
Ro Bentsu
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