Preventive structure for preventing extraordinary deformation of

Details Preventive structure for preventing extraordinary deformation of Preventive structure for preventing extraordinary deformation of

1995-03-21

1996-07-23

Denion, Thomas E.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Tension adjuster or shifter driven by electrical or fluid motor

92 98D, 138 30, F16H 708

Patent

active

055384781

ABSTRACT:
A tensioner for a chain or toothed belt which includes an oil reservoir. Oil contained in the oil reservoir is hermetically sealed by a diaphragm fixed to the oil reservoir by a plug. A pressurizing means is mounted between the diaphragm and the plug. The pressurizing means includes a compression spring and a bowl-shaped spring seat. A diaphragm is urged by the pressurizing means. A detent portion, extending upwardly from the diaphragm, is integrally formed on the surface of the diaphragm facing the atmosphere. The spring seat includes a recess at the central portion of the spring seat so that the detent portion of the diaphragm is engaged with the recess preventing free movement between the diaphragm and the pressurizing means.

REFERENCES:
patent: 3082792 (1963-03-01), Jenkins
patent: 3646854 (1972-03-01), Bradley et al.
patent: 3776107 (1973-12-01), Molus
patent: 3999266 (1976-12-01), Parker
patent: 4607737 (1986-08-01), Hans et al.
patent: 4708696 (1987-11-01), Kimura et al.
patent: 4713044 (1987-12-01), Nakamura et al.
patent: 4909777 (1990-03-01), Inoue et al.

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