Dual-circuit pressure control valves

Details Dual-circuit pressure control valves Dual-circuit pressure control valves

1980-12-30

1983-03-01

Hershkovitz, Abraham

Fluid-pressure and analogous brake systems

Motorman's valves

Multiple motors

60591, 92 68, 137636, 303 56, B60T 1506

Patent

active

043753043

ABSTRACT:
Dual circuit pressure control valves for brake system are known in which the control pistons are located parallel to each other with each control piston controlling a different one of two brake circuits. Both control pistons are loaded by a common preloading force. The known arrangement is complicated in its construction and has a large overall length. According to the present invention, the construction is simplified and the overall length is reduced by providing a torsion spring which provides the preloading force acting on the control pistons via stationarily supported swivelling levers.

REFERENCES:
patent: 1755595 (1930-04-01), Craig
patent: 2705971 (1955-04-01), Dorkins
patent: 2907550 (1959-10-01), Heinish
patent: 3125000 (1964-03-01), Reuter
patent: 3131573 (1964-05-01), Bent
patent: 3133473 (1964-05-01), Garrison
patent: 3253518 (1966-05-01), Duemler
patent: 3605814 (1971-09-01), Gordon
patent: 3766835 (1973-10-01), Kobelt
patent: 3965798 (1976-06-01), Estlick
patent: 4080992 (1978-03-01), Niederer
patent: 4200340 (1980-04-01), Margetts

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