Electro-magnetic clamp for gripping a shaft

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 2/02 (2006.01)

Patent

CA 2499162

A clamp for locking engagement with a shaft includes a body having a bore for slideably receiving a shaft, with opposing grippers recessed into the body coaxial with the shaft. The grippers each include inner and outer sleeves displaceable relative to each other, with the outer sleeves being retained by shoulders within the body and the inner sleeves being slideable within a pocket for selectively releasing and gripping the shaft. A pair of opposing plungers selectively displaces the inner sleeves, the plungers each being associated with a slideable arm for coordinated gripping and release of the shaft. The arms are drawn together or apart by an actuator such as a solenoid. The clamp is intended to be fastened to a component, for permitting the component to selectively grip a shaft, or release the shaft for slideable and/or rotateable movement relative to the shaft, such as an optical instrument for testing of patient's eyes which when fastened must tightly grip a shaft to prevent rotation and slideable movement, but which when released must permit free movement relative to the shaft.

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