Endless belt power transmission systems or components – Means for adjusting belt tension or for shifting belt,... – Guide roll mounted for movement of its axis along arcuate...
Patent
1992-12-21
1994-02-15
Bui, Thuy M.
Endless belt power transmission systems or components
Means for adjusting belt tension or for shifting belt,...
Guide roll mounted for movement of its axis along arcuate...
474112, F16H 712
Patent
active
RE0345431
ABSTRACT:
A belt tensioner having a sleeve bearing pivotally mounting a pivoted structure on a fixed structure for spring pressed movement between first and second positions. The sleeve bearing is larger than and surrounds a ball bearing assembly rotatably mounting a pulley on the pivoted structure. The pulley has a cantilevered rim which axially overlaps and annularly surrounds the sleeve bearing. One of the structures and the sleeve bearing have slidably interengaging surfaces which are compressed together by the belt load force in the pivoted structure and the reactionary force acting in the fixed structure so as to provide a damping torque resistance to the pivotal movement of the pivoted structure which prevents movements resulting from dynamic changes in the belt load force within a range. The arrangement is such that independent vibrational forces instantaneously release the damping torque resistance to permit instantaneous movements otherwise prevented.
REFERENCES:
patent: 4077272 (1978-03-01), Busso
patent: 4473362 (1984-09-01), Thomey et al.
patent: 4504252 (1985-03-01), Honma
patent: 4551120 (1985-11-01), Thomey
patent: 4634407 (1987-01-01), Holtz
patent: 4661087 (1987-04-01), Henderson
patent: 4725260 (1988-02-01), Komorowski et al.
Bui Thuy M.
Litens Automotive Partnership
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