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US 4,905,528 AGranted
Electric actuator
AssigneeAsmo Co., Ltd.
InventorsChikara Kawaguchi, Kiyohide Terada
Life of this patent
Estimating the term…
Abstract
An electric actuator, in which the rotation of the motor is transmitted to the output rod through a pin mounted on a gear connected to motor through the other gears. A stopper is formed on the output rod connected to a door knob, and a pivotal arm mounted on the output rod. A coupling is provided not to transmit the movement of the output rod caused by the door knob, whereby the door is locked or unlocked not only by a remote control, but also by a manual operation of the door knob.
Claims4
An electric actuator in which an external operation member is controlled by an electric motor, comprising:
- a gear rotatably mounted on a main shaft fixed to a casing and driven by said motor mounted in the casing;
- an output rod having a top portion projecting from the casing being connected to the external operation member and rectilinearly reciprocatively mounted on the casing;
- a coupling is provided between said gear and said output rod and transmits the rotation of said motor to said output rod so that the output rod is reciprocated, and transmits the reciprocative motion of said output rod applied from the external operation member neither to said gear nor to said motor;
- said coupling including a pin mounted on said gear and said output rod including a pivotal arm and a stopper brought into and out of contact with said pin;
- and
- an opening to allow the rectilinear movement of said opening to be free relative to said main shaft of said gear provided therein;
- whereby rotation of said gear caused by said motor allows said pin to be brought into contact with said pivotal arm, and said pin is stopped when said pin contacts with said stopper.
4 more elements
Dependencies are inferred from the claim text.