Joints and connections – Articulated members – Lockable at fixed position
Patent
1985-02-05
1986-04-29
Husar, Cornelius J.
Joints and connections
Articulated members
Lockable at fixed position
403110, 403351, 403367, 403372, 272123, F16B 710, F16B 202
Patent
active
045853673
ABSTRACT:
A releasable locking device for frictionally engaging a bar member. The device includes a cam sleeve adapted to be adjustably positioned in selected locations along the bar member. The cam sleeve has an internal surface generally conforming in shape to the external surface of the bar member entirely along its length and the internal surface of the cam sleeve normally is dimensioned the same as or larger than the bar member so as to be slidably movable along the bar member for adjustably positioning the cam sleeve in a selected location. The cam sleeve is formed of a resilient material for selective radially uniform compressed frictional engagement with the external surface of the bar member. The device also includes a pair of cam collars adapted to be operably disposed in substantially coaxial relation on the cam sleeve. The cam collars each have a continuous internal cam surface adapted to cooperate with a mating external cam surface on the cam sleeve to reduce the dimension of the internal surface of the cam sleeve for selective radially uniform compressed frictional engagement with the bar member in response to opposing axially stationary rotation of the cam collars relative to the cam sleeve in locking directions. The cam collars cooperate with the cam sleeve to define a pair of individual locking members. With this arrangement, the device can be moved along a bar member to a selected location for double locking without the need to twist the bar member to produce the locking condition.
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Cuomo Peter M.
Husar Cornelius J.
Sears, Roebuck and Co.
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