Double-acting hydraulic pressure intensifier

Details Double-acting hydraulic pressure intensifier Double-acting hydraulic pressure intensifier

2005-03-15

2005-03-15

Freay, Charles G. (Department: 3746)

Pumps

Intensifier

C091S300000, C091S297000

Reexamination Certificate

active

06866485

ABSTRACT:
A double-acting hydraulic pressure intensifier includes a supply connection, a return connection, a high-pressure connection. An intensifier piston assembly includes a low-pressure piston arranged in a low-pressure cylinder and two high-pressure pistons connected to the low-pressure piston each arranged in a high-pressure cylinder. A switching valve assembly includes a displace able, hydraulically controlled valve element which on its two opposite sides in the direction of displacement has control pressure chambers with pressure application areas of different sizes, namely, a first control pressure chamber with a smaller pressure application area and a second control pressure chamber with a larger pressure application area. A stop plug is arranged between the second control pressure chamber and the supply connection.

REFERENCES:
patent: 2508298 (1950-05-01), Saari
patent: 4523895 (1985-06-01), Silva
patent: 4659294 (1987-04-01), Barthomeuf
patent: 4780064 (1988-10-01), Olsen
patent: 3032430 (1987-06-01), None
patent: 1420424 (1976-01-01), None

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