Pressure-compensated, directly controlled valve

Details Pressure-compensated, directly controlled valve Pressure-compensated, directly controlled valve

2007-07-17

2007-07-17

Jacyna, J. Casimer (Department: 3754)

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

Reexamination Certificate

active

10513994

ABSTRACT:
The invention relates to a valve for high-pressure hydraulics, having a valve bore provided in a valve housing in which bore at least one valve seat dividing a guide on the high-pressure side of the valve bore from a guide on the low-pressure side of the valve bore and a valve needle actuatable directly by an actuator which needle is guided in the valve bore and has at least one sealing face which can cooperate with the at least one valve seat in which the valve needle is constructed in multiple parts and, in the region of the guide on the low-pressure side, has at least one sleeve.

REFERENCES:
patent: 6227459 (2001-05-01), Coldren et al.
patent: 6471142 (2002-10-01), Lambert
patent: 2002/0153429 (2002-10-01), Boecking
patent: 199 41 709 (2001-03-01), None
patent: 1 041 272 (2000-10-01), None
patent: 2 350 662 (2000-12-01), None
patent: WO 01/55578 (2001-08-01), None

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