Automatic power transmission belt tensioner

Details Automatic power transmission belt tensioner Automatic power transmission belt tensioner

F - Mech Eng,Light,Heat,Weapons

16

H

74/264

F16H 7/12 (2006.01) F16H 7/08 (2006.01)

Patent

CA 1298491

M-646 "AUTOMATIC POWER TRANSMISSION BELT TENSIONER" Abstract of the Disclosure An automatic power transmission belt tensioner having spring structure for providing a dual biasing of an idler roller against the power transmission belt. The biasing structure provides a dual biasing of the arm carrying the idler roller including a biasing under torsion and a biasing under compression of the spring structure. In one form, a pair of biasing springs is utilized, one for providing the torsion biasing and one for providing the compressional bi- asing. In another form, a single spring effects both of the dual biasing actions. The compressional biasing structure includes a pair of cams having cooperating inclined surfaces for effecting compression of the compression spring as a function of the movement of the idler roller arm.

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