Hydrostatic drive system with a safety device

Details Hydrostatic drive system with a safety device Hydrostatic drive system with a safety device

2006-05-02

2006-05-02

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

C060S468000

Reexamination Certificate

active

07036308

ABSTRACT:
A hydrostatic drive system (1) has at least one user. A control valve device (3; 4; 5; 6) to control the user is actuated by an actuation signal. A delivery flow regulation device (11) is triggered by a load pressure signal of the user. The drive system has a safety device (20) with a function position (21b) in which the actuation signal is routed to the control valve device (3; 4; 5; 6) and the load pressure signal is routed to the delivery flow regulation device (11), and a safety position (21a) in which the control valve device (3; 4; 5; 6) is discharged by the actuation signal and the delivery flow regulation device (11) by the load pressure signal. The safety device (20) also has a discharge position (21c) in which the connection of the control valve device (3; 4; 5; 6) with the user is discharged.

REFERENCES:
patent: 4723409 (1988-02-01), Kuhn
patent: 102 24 731 (2003-01-01), None

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