Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Reexamination Certificate
1999-07-30
2001-05-01
Michalsky, Gerald A. (Department: 3753)
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
C060S422000, C091S516000, C137S118020
Reexamination Certificate
active
06223763
ABSTRACT:
The invention relates to a hydraulic system for actuating at least two operational areas in a vehicle.
It is known to provide in vehicles a hydraulic system for the steering system and an automated manual transmission with which these two operational areas can be activated via correlated valves. For the two operational areas individual hydraulic systems with individual controls are used so that a complex and expensive design is required.
It is an object of the invention to embody the aforementioned hydraulic system such that at least two operational areas of the vehicle can be supplied with hydraulic medium in an inexpensive but reliable manner.
This object is inventively solved for the aforementioned hydraulic system.
In the inventive hydraulic system the distributor valve ensures that the two operational areas of the vehicle are supplied with sufficient amounts of hydraulic medium. The distributor valve is designed such that one of the two operational areas is given preference. If one of the operational areas is, for example, the steering system of the vehicle and the other operational area the automated manual transmission of the vehicle, then the distributor valve ensures that the steering of the vehicle has priority. This ensures that under any condition the steering of the vehicle is supplied with the required hydraulic medium. The inventive hydraulic system is constructively simple and requires only a minimal mounting space.
Further features of the invention result from the dependent claims, the description, and the drawings.
The invention will be explained in more detail with the aid of the drawings showing one embodiment. It is shown in:
FIG. 1
in a schematic representation an inventive hydraulic system;
FIG. 2
a circuit diagram of the hydraulic system according to
FIG. 1
;
FIG. 3
an axial section of the flow regulator valve of the inventive hydraulic system;
FIG. 4
a partial end view and partial axial section of the switch valve of the inventive hydraulic system;
FIG. 5
a
in a view in the direction of arrow a in
FIG. 5
b
a throttle of the inventive hydraulic system;
FIG. 5
b
the throttle in a side view;
FIG. 5
c
a view in the direction of arrow b in
FIG. 5
b.
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patent: 4658850 (1987-04-01), Uchino
patent: 5156680 (1992-10-01), Orzechowski
patent: 5398594 (1995-03-01), Tischer et al.
patent: 5417241 (1995-05-01), Tischer et al.
patent: 5836347 (1998-11-01), Harries
Knecht Andreas
Meyer Roland
Niethammer Bernd
Tischer Dieter
Trzmiel Alfred
Hydraulik-Ring GmbH
Michalsky Gerald A.
Robert W. Becker & Associates
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