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
1989-10-19
1990-11-13
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...
474117, F16H 708
Patent
active
049698583
ABSTRACT:
A tensioning device for belts, chains and the like, particularly for the camshaft drive of an internal combustion engine, the device comprising a tension pulley mounted on a movable carrier and a control element by which, when heating occurs, the carrier can be moved by an actuating member in the slackening direction of the belt against the action of a pressure spring, the control element comprising a hollow cylindrical sleeve and a pressure piston arranged therein for longitudinal displacement on whose part lying outside the sleeve a pressure member with a slanting contact surface forming an acute angle with the piston axis is fitted, the contact surface being in contact with a corresponding contact surface of the carrier of the tension pulley for increasing the working reliability of the control element so that automatic adjustment of a defined belt pretension is effected during operation.
REFERENCES:
patent: 4713044 (1987-12-01), Nakamura et al.
patent: 4741299 (1988-05-01), Matsuura et al.
patent: 4790796 (1988-12-01), Okabe et al.
patent: 4790801 (1988-12-01), Schmidt et al.
patent: 4798563 (1989-01-01), Okabe et al.
patent: 4904230 (1990-02-01), Kawashima et al.
Goppelt Dieter
Hertrich Steffen
Bui Thuy M.
INA Walzlager Schaeffler KG
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