Hydraulic tensioner having a variable orifice check valve and a

Details Hydraulic tensioner having a variable orifice check valve and a Hydraulic tensioner having a variable orifice check valve and a

1992-05-19

1993-11-09

Bui, Thuy M.

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 708

Patent

active

052598209

ABSTRACT:
A hydraulic tensioner having a plunger slidably fitted in a mounting cavity n a housing and biased in a protruding direction by a spring and fluid. A variable orifice check valve permits fluid to only flow into, and thereby protrude the plunger, but not out of the mounting cavity is disclosed. The variable orifice check valve is accomplished with a cylindrical compression spring in which the spring coils are normally mutually contacting, thus preventing the transfer of fluid, but which move to a non-contacting orientation upon experiencing a desired pressure. A mechanical no-return capability is provided to the plunger through an internal ratchet positioned within the mounting cavity and constructed from a cylinder having two helical openings which the plunger engages when the plunger experiences sufficient force to be pushed inwardly.

REFERENCES:
patent: 3574418 (1971-04-01), Okabe
patent: 3626776 (1971-12-01), Staudinger et al.
patent: 3812733 (1979-05-01), Yoshida
patent: 3896834 (1975-07-01), Paul, Jr.
patent: 3960026 (1976-06-01), Hibino
patent: 3964331 (1976-06-01), Oldfield
patent: 4190025 (1980-02-01), Wahl
patent: 4504251 (1985-03-01), Mittermeir
patent: 4708696 (1987-11-01), Kimura et al.
patent: 4713043 (1987-12-01), Biedermann
patent: 4790796 (1988-12-01), Okabe et al.
patent: 4826470 (1989-05-01), Breon et al.
patent: 4874352 (1989-10-01), Suzuki
patent: 4902266 (1990-02-01), Ojima et al.
patent: 4909777 (1990-03-01), Inoue et al.
patent: 4911679 (1990-03-01), Inoue et al.
patent: 4940447 (1990-07-01), Kawashima et al.
patent: 4950209 (1990-08-01), Kawashima et al.
patent: 4959041 (1990-09-01), Ojima et al.
patent: 4963121 (1990-10-01), Himura et al.
patent: 4985009 (1991-01-01), Schmidt et al.
patent: 4986796 (1991-01-01), Kawashima et al.
patent: 4995854 (1991-02-01), Ojima
patent: 5030169 (1991-07-01), Kiso et al.
patent: 5116284 (1992-05-01), Cho

Affiliated with

Also associated with

Rating

Hydraulic tensioner having a variable orifice check valve and a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic tensioner having a variable orifice check valve and a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic tensioner having a variable orifice check valve and a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1139355