SAFETY LOCKOUT FOR ACTUATOR SHAFT
First Claim
1. A safety lock-out to prevent rotation of a rotary actuator when an axial distance between a first and a second portion of an actuated mechanism exceeds a selected distance, comprising:
- a shaft rotatably connected to the first portion, axially movable relative to the second portion, said shaft defining a notch;
a locking member adapted to lock the rotary actuator, said locking member being movable between a locking position and an unlocked position, wherein the locking member fits in the notch when in the locking position thus preventing rotation of the shaft;
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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Accused Products
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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Citations
28 Claims
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1. A safety lock-out to prevent rotation of a rotary actuator when an axial distance between a first and a second portion of an actuated mechanism exceeds a selected distance, comprising:
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a shaft rotatably connected to the first portion, axially movable relative to the second portion, said shaft defining a notch;
a locking member adapted to lock the rotary actuator, said locking member being movable between a locking position and an unlocked position, wherein the locking member fits in the notch when in the locking position thus preventing rotation of the shaft;
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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18. A locking mechanism to prevent rotation of an actuating shaft of a Full Thickness Resectioning Device, comprising:
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a frame rotatably supporting the shaft and coupled to a stapling head of the Full Thickness Resectioning Device;
a yoke coupled to an anvil of the Full Thickness Resectioning Device, movable axially relative to the frame;
a locking member movable relative to the shaft between a locking position and an unlocked position, the locking member engaging a notch in the shaft to prevent rotation of the shaft when in the locking position; and
an unlocking member adapted to move the locking member to the unlocked position when an axial distance between the anvil and the stapling head is less than a selected distance.
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Specification