Safety lockout for actuator shaft
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United States of America Patent
Stats
-
Aug 27, 2002
Grant Date -
Jun 6, 2002
app pub date -
Dec 1, 2000
filing date -
Dec 1, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A safety lock-out to prevent rotation of a rotary actuator is described. When an axial distance between a first and a second portion of an actuated mechanism exceeds a selected distance, the lock-out prevents the rotation. The safety lock-out includes a shaft rotatably connected to the first portion and axially movable relative to the second portion. A locking member is adapted to lock the rotary actuator by placing a protrusion in a notch of the shaft, thus preventing rotation of the shaft. The device also includes a spring member urging the locking member in the locking position, and an unlocking member adapted to urge the locking member in the unlocked position when the selected distance is not exceeded.
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