Fluid pressure circuit with accumulator charging and safety valv

Details Fluid pressure circuit with accumulator charging and safety valv Fluid pressure circuit with accumulator charging and safety valv

1987-04-20

1989-06-13

Garrett, Robert E.

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

F15B 102, F15B 2000

Patent

active

048380237

ABSTRACT:
A safety system connecting a pressure medium source, user, and a pressure reservoir (accumulator) has a pressure port, a supply container port, a reservoir port, a three-way valve and a pressure relief valve. The pressure relief valve is attached to the pressure port and to the three-way valve. The valve member of the three-way valve in a first position connects the pressure port with the reservoir port. In a second position, the valve member connects the reservoir port with the supply container port. To avoid the disadvantages of a three-way valve with negative overlap, an arrester check or anti-return valve is inserted between the pressure port and the reservoir port closing toward the reservoir port. The three-way valve has a positive overlap.

REFERENCES:
patent: 3922854 (1975-12-01), Coeurderoy
patent: 3963039 (1976-06-01), Coeurderoy
patent: 3991570 (1976-11-01), Keller
patent: 4085587 (1979-04-01), Garlinghouse
patent: 4204584 (1980-05-01), DeMaight
patent: 4332270 (1982-06-01), Budecker
patent: 4353286 (1982-10-01), Wetter
patent: 4430859 (1984-02-01), Hirsch
patent: 4646518 (1987-03-01), Hochsattel
patent: 4723412 (1988-02-01), Buschmann

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