Load sensing proportioning valve

Details Load sensing proportioning valve Load sensing proportioning valve

1991-03-15

1992-10-13

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 228, 303 221, 188195, 188 67, B60T 822

Patent

active

051544920

ABSTRACT:
The load sensing brake proportioning valve of a vehicle comprises a first piston (14) sliding in a stepped bore made in a body, and carrying a normally open shutter (18) arranged between a source of fluid under pressure and the associated brake circuit, the first piston (14) being moveable counter to a spring (16) under the effect of the pressure of the fluid which tends to close the shutter (18), a sliding rod (24) normally bearing between a pusher (20), the position of which is a function of the load of the vehicle, and the shutter (18). The proportioning valve comprises a locking mechanism immobilizing the sliding rod (24) as soon as the pressure of the fluid in the associated brake circuit exceeds a specific threshold.

REFERENCES:
patent: 2192478 (1940-03-01), Meeks
patent: 2486663 (1949-11-01), Lovejoy
patent: 2700201 (1955-01-01), Bannister
patent: 3405978 (1968-10-01), LePelletier
patent: 3643765 (1972-02-01), Hanchen
patent: 3892445 (1975-07-01), Oberthur
patent: 4078778 (1978-03-01), Hubweber
patent: 4185539 (1980-01-01), Stratienko
patent: 4358163 (1982-11-01), Young
patent: 4457741 (1984-07-01), Hoeptner, III
patent: 4592591 (1986-06-01), Wiers
patent: 4601232 (1986-07-01), Troxell, Jr.
patent: 4796746 (1989-01-01), Bergstrom et al.

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