Adjusting arrangement for variable load valve device

Details Adjusting arrangement for variable load valve device Adjusting arrangement for variable load valve device

1980-04-14

1981-11-10

Reger, Duane A.

Fluid-pressure and analogous brake systems

Load control

Responsive to fluid pressure spring

B60T 822

Patent

active

042994276

ABSTRACT:
A variable load valve device having a piston subject to air spring pressure that varies with vehicle loading to position a cam member formed on a control piston in accordance with the vehicle load condition. The cam member acts through a plunger or push rod to operate a relay valve device via which brake pressure is controlled. A spring that acts on the control piston in opposition to air spring pressure has an adjustable deflection characteristic wherein a clamping device threaded within the spring coils is rotated by a screwdriver or the like. An adjustable screw that serves as a stop for the spring clamp member is provided with a through bore to accommodate passage of the screwdriver into engagement with a slot in the clamp member to facilitate rotation of the clamp, without requiring valve disassembly or component replacement.

REFERENCES:
patent: 2940796 (1960-06-01), Ortmann et al.
patent: 3369846 (1968-02-01), Scott

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