Hydraulic tensioner

Details Hydraulic tensioner Hydraulic tensioner

2007-02-13

2007-02-13

Ridley, Richard (Department: 3682)

Machine element or mechanism

Mechanical movements

Reciprocating to reciprocating

C074S101000, C074S109000

Reexamination Certificate

active

11247621

ABSTRACT:
In a hydraulic tensioner, a deairing valve unit comprising a synthetic resin ball guide, a check ball a biasing spring, a ball seat, and a retaining disc, is press-fit into a hollow plunger, and disposed adjacent the protruding end of the plunger. The ball and seat of the deairing valve unit are arranged to block flow of oil out of the tensioner when the oil is under pressure, but open to allow air to flow out of the tensioner, through a vent in the protruding end of the plunger, after a negative pressure condition occurs inside the oil chamber of the tensioner.

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patent: 1 101 975 (2001-01-01), None
patent: 2001-021011 (2001-01-01), None

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