Device for the generation of auxiliary pressure

Details Device for the generation of auxiliary pressure Device for the generation of auxiliary pressure

1990-04-16

1992-08-11

Nilson, Robert G.

Pumps

Motor driven

Fluid motor

91346, 13762527, F04B 1700

Patent

active

051374366

ABSTRACT:
This invention relates to a device for the generation of auxiliary pressure, and has control valves (2) arranged in a control housing (1) of a control unit. The control valves (2), depending on their position, actuate several control channels (4) leading into severan control pressure chambers (3) so that, depending on the position of the control valves (2), communication can be established between an energy source (5) and s spring-loaded servo piston (6) which, via an adjoining working cylinder (7) sealed by the servo piston (6), delivers a medium of low pressure level to an energy level of high pressure by means of a pressure piston (8), with the servo piston (6) having elastic means (11) which influences a change-over point of the control valves (2) and which, for the purpose of switching the control valves (2), can be clamped in position between a servo element (9) connected on the servo piston (6) and control rod (10) engaging the control unit. The device provides simple, operationally reliable, actuation of the control valves (2). The device of the present invention is particularly useful for automotive vehicle applications.

REFERENCES:
patent: 21155 (1858-08-01), Stevens
patent: 1488171 (1924-03-01), Savidge
patent: 1893464 (1933-01-01), Barks
patent: 1999881 (1935-04-01), Lowe
patent: 2298106 (1942-10-01), Carlson
patent: 3548717 (1970-12-01), Passaggio
patent: 3608587 (1971-09-01), Zbell
patent: 4166411 (1979-09-01), Bron

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