Oil tensioner with screw groove on a sliding surface

Details Oil tensioner with screw groove on a sliding surface Oil tensioner with screw groove on a sliding surface

1995-04-03

1996-04-30

Schoeppel, Roger J.

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

F16H 712

Patent

active

055120199

ABSTRACT:
An oil tensioner includes a housing, forming a cylindrical bore therewithin, and a hollow cylindrical plunger. The housing and the plunger form an oil chamber therebetween, to which oil is supplied. The plunger is urged by a spring as well as external oil hydraulics. The plunger includes a screw groove, in communication with the oil chamber, formed on a sliding surface thereof abutting an inner surface of the housing. When the plunger is urged rearward, oil in the oil chamber flows gradually through the screw groove, thereby effectively lubricating the sliding surface therebetween.

REFERENCES:
patent: 4822320 (1989-04-01), Suzuki
patent: 4874352 (1989-10-01), Suzuki
patent: 4881927 (1989-11-01), Suzuki
patent: 5073150 (1991-12-01), Shimaya
patent: 5087225 (1992-02-01), Futami et al.
patent: 5259820 (1993-11-01), Mott
patent: 5277664 (1994-01-01), Mott

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