Mechanical device converting rotary input to linear...

Details Mechanical device converting rotary input to linear... Mechanical device converting rotary input to linear...

F - Mech Eng,Light,Heat,Weapons

16

H

269/21

F16H 25/12 (2006.01) B25B 1/02 (2006.01) F16H 25/22 (2006.01)

Patent

CA 1050062

ABSTRACT A mechanical device converting rotary input to linear compression or stretching output with a high mechanical advantage and with a minimum of frictional losses which comprises a screw member having multiple lead threads and a pair of jaw assemblies carried on the screw member. Each of the jaw assemblies comprises a plurality of roller members equal in number to the thread-starts on the screw member and an outer member having internal annular grooves in rolling contact with the roller members. The roller members of one of the jaw assemblies have a larger pitch- diameter than the pitch-diameter of the roller members of the other jaw assembly. The screw member is the rotary input member and any known means such as a crank can be applied to one end of the screw member for rotating the screw member, and as the screw member is rotated the jaw assemblies are linearly translated and contemporaneously moved either together or apart depending upon the direction of rotation of the screw member.

276423

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