Adjustable variable load valve device

Details Adjustable variable load valve device Adjustable variable load valve device

1979-06-19

1981-01-06

Reger, Duane A.

Fluid-pressure and analogous brake systems

Load control

Responsive to fluid pressure spring

B60T 822

Patent

active

042432731

ABSTRACT:
A variable load valve device having a fulcrumed lever, the opposite sides of which are acted upon by respective piston stems of opposing piston assemblies subject to air spring pressure and brake cylinder pressure, respectively. Each piston assembly is independently and axially positionally adjustable relative to the lever to vary the effective differential forces which dictate the level at which brake cylinder pressure is cut off to limit the maximum desired brake cylinder pressure for any given air spring pressure. The desired position adjustments of the piston assemblies are made by adjusting screws engaging the respective piston assemblies which require no changes in spring size or piston dimensions.

REFERENCES:
patent: 2940796 (1960-06-01), Ortmann et al.
patent: 3881784 (1975-05-01), Engle
patent: 4077676 (1978-03-01), Hata

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