Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1983-10-27
1986-04-22
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137 87, 251 50, G05D 1618
Patent
active
045835675
ABSTRACT:
A valve is proposed for regulating and balancing the pressure in two fluid pressure systems. The valve comprises a balance piston and a regulating piston. The balance piston is acted on by the pressures in each of the two systems and the regulating piston is acted on by a regulating pressure and by the pressure in one of the systems. The balance and regulating pistons each control a respective connection to a relief line for each of the two systems. Thus, the regulating pressure determines the pressure in one system, while the balance piston determines the pressure in the other system relative to the pressure regulated by the regulating piston. The regulating pressure may be either pneumatic or hydraulic pressure. Shock absorber means is provided to resist movement of the balance piston in response to rapid pressure fluctuations. The shock absorber means comprises a plunger and a bore adapted to receive the plunger. A passageway communicating with the blind bore has a control orifice for controlling the flow of fluid to and from the blind bore.
REFERENCES:
patent: 2313991 (1943-03-01), Fitch
patent: 2489823 (1949-11-01), Senninger
patent: 3154925 (1964-11-01), DeVita
patent: 3216441 (1965-11-01), Thorsheim
Beloit Corporation
Campbell Raymond W.
Mathews Gerald A.
Nilson Robert G.
Veneman Dirk J.
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