Tensioner with replaceable filter in oil path

Details Tensioner with replaceable filter in oil path Tensioner with replaceable filter in oil path

1990-11-06

1992-02-25

Britts, Ramon S.

Endless belt power transmission systems or components

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

With sensor for controlling operation of shifter to correct...

474110, F16H 722

Patent

active

050909460

ABSTRACT:
A fluid tensioner for use with power transmission chains such as automotive camshaft drive chains users engine lubricating oil as its operating fluid, and includes a built-in oil filter for removing foreign matter which might interfere with proper tensioner operation. The tensioner is attached directly to the outside wall of an engine block and, in one version the filter is disposed in an elongated recess formed in the portion of the tensioner housing which engages the engine block, and engine oil is received through an oil port in the block. The filter screen is tilted to maximize the distance between the oil port and the screen and between the screen and the channel in the tensioner through which oil flows to the tensioner mechanism. In another version, the tensioner has a built-in oil reservoir, and the filter is located either upstream or downstream from the reservoir and insertable through a passage leading to the outside of the tensioner housing for easy inspection and replacement.

REFERENCES:
patent: 4048866 (1977-09-01), Weirich et al.
patent: 4190025 (1980-02-01), Wahl
patent: 4276038 (1981-06-01), Kraft
patent: 4299583 (1981-11-01), Kraft et al.
patent: 4543079 (1985-09-01), Matsuda et al.
patent: 4575364 (1986-03-01), Lamers

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