F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/53
F16H 29/00 (2006.01) F16D 21/02 (2006.01) F16K 31/05 (2006.01)
Patent
CA 1153906
ROTARY ACTUATOR ABSTRACT OF THE DISCLOSURE A rotary actuator having an output drive rod mounted within an output sleeve that is rotated by a drive motor. A driving mechanism for coupling the torque of the drive motor to the output sleeve includes a worm wheel that is mounted on the output sleeve so as to be freely rotatable relative to the output sleeve and a driving portion for transmitting power from the worm wheel to the output sleeve. A clutch also is mounted on the output sleeve for rotation with the output sleeve. The clutch however is axially movable along the output sleeve. When in its first position, the clutch couples the drive portion of the drive mechanism to the output sleeve for transmitting the rotational force. The clutch is normally biased into its first position for engagement with the drive portion of the drive mechanism. A declutch mechanism is capable of causing the clutch to be moved into a second position out of engagement with the drive portion. The declutch mechanism is used if the drive portion ceases to operate and the output sleeve is to be rotated by a hand wheel. When the clutch is moved out of engagement with the drive portion, it is moved into a coupling arrangement with the hand wheel which in turn is able to manually drive the clutch and transmit a rotational force to the output- sleeve. The clutch is retained in its second position until operation of the driving portion is resumed. Upon resumption of the rotation of the driving portion of the drive mechanism, the clutch is automatically returned to its first position in engagement with the driving portion.
388622
Andco Actuator Products Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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