Pressure control device

Fluid-pressure and analogous brake systems – Speed-controlled – Odd condition or device detection

Reexamination Certificate

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Details

C303S119200, C303SDIG001, C303S119300, C303S001000

Reexamination Certificate

active

06428121

ABSTRACT:

TECHNICAL FIELD
The present invention generally relates to vehicle brake systems, and more particularly relates to a pressure control device for hydraulic automotive vehicle brake systems with wheel slip control which is equipped especially with means for the automatic brake intervention.
BACKGROUND OF THE INVENTION
DE 37 09 189 A1 discloses a pressure control device for a wheel-slip controlled hydraulic automotive vehicle brake system which, for heating the valves arranged in a block-shaped housing, includes a heating device which, as an electric resistance heating in the form of a heating cartridge, either points into the valve block, or utilizes the heat in cooling water of a combustion engine for heating a passage bore in the valve block. The heating devices proposed have proved to be complicated and of little practicable value.
In view of the above, an object of the present invention is to improve upon a pressure control device of the type mentioned hereinabove so that a particularly effective heating of determined points of the pressure control device is effected with the simplest possible means at low cost.


REFERENCES:
patent: 6007162 (1999-12-01), Hinz et al.
patent: 37 09 189 (1988-09-01), None
patent: 91 02 352 (1992-06-01), None
patent: 195 47 111 (1997-06-01), None
patent: 196 42 192 (1998-04-01), None
patent: 297 12 033 (1998-11-01), None
patent: 197 54 163 (1999-04-01), None
patent: 199 02 033 (2000-03-01), None
patent: 1 345 087 (1974-01-01), None
patent: 96 33081 (2000-11-01), None
Search Report of the German Patent Office for Application No. 199 20 171.4.

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