Flow control apparatus

Details Flow control apparatus Flow control apparatus

1988-05-18

1989-12-19

Look, Edward K.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

60468, 91446, 180132, 180140, 180143, 417300, G05D 1100, F16D 3102, B62D 506

Patent

active

048876321

ABSTRACT:
A flow control valve includes a cylinder in which an inflow port, an outflow port and a return port are formed. A spiral choke is formed between the inflow and outflow ports. A working oil introduced from the inflow port into the cylinder flows out from the outflow port through the spiral choke. An actuating valve is arranged in the cylinder so as to open and close the return port in accordance with a difference in pressure between the inflow and outflow port sides of the spiral choke. When the pressure difference exceeds a predetermined value, the actuating valve opens the return port so that a part of the working oil introduced into the cylinder is returned to the inflow side of the flow control valve.

REFERENCES:
patent: 4320812 (1982-03-01), Takaoka et al.
patent: 4343324 (1982-08-01), Ohe et al.
patent: 4400938 (1983-08-01), Ohe
patent: 4420934 (1983-12-01), Udono
patent: 4505293 (1985-03-01), Strange
patent: 4534435 (1985-08-01), Shibahata et al.
patent: 4577728 (1986-03-01), Gruett
patent: 4716982 (1988-01-01), Ishii et al.

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