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
1987-01-21
1988-05-31
Leppink, James A.
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...
474138, F16H 712
Patent
active
047478110
ABSTRACT:
A belt tensioner has a shaft having an oil reservoir in a lower portion thereof and having an external thread and rotatably mounted in a body, a torsion spring provided between the body and the shaft so as to urge the shaft in a rotational direction, and a cylindrical rod having an internal thread engaged with the external thread of the shaft. A lower end of the rod being projected from the body so as to be operatively connected to a tension pulley for a belt. The torsion spring and both the threads are arranged to project rod by the rotation of the shaft urged by the torsion spring. An oil passage is provided in the shaft so as to communicate the oil reservoir with the bore above the internal thread of the rod.
REFERENCES:
patent: 4151756 (1979-05-01), Binder et al.
patent: 4411638 (1983-10-01), Wilson
patent: 4573952 (1986-03-01), Schulze
patent: 4657524 (1987-04-01), Okabe
Ozawa Masahiro
Sawafuji Shuji
Yoshikawa Hiroshi
Bui Thuy M.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Leppink James A.
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