Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Reexamination Certificate
2001-12-26
2004-02-10
Siconolei, Robert A. (Department: 3683)
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
C303SDIG001
Reexamination Certificate
active
06688707
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a hydraulic aggregate for a slip-controlled brake system.
BACKGROUND OF THE INVENTION
A hydraulic aggregate of the above-mentioned type is disclosed in WO 91/16220. It is disclosed in this publication to arrange the noise damping chambers in parallel to the low pressure accumulator bores which are, thus, jointly aligned in one row laterally of a pump bore. The pressure fluid channels for the brake pressure generator ports at the block-shaped accommodating member extend vertically through the valve accommodating bores provided for the inlet valves and laterally pass by the pump bore into the bottom area of the noise damping chambers. Extending in parallel to each pressure fluid channel that opens into the noise damping chamber is another vertical pressure fluid channel for each brake circuit which exclusively connects the pump bore to the noise damping chamber.
The result is a block-type construction that exceeds the shape of a block, i.e., has considerably differing edge lengths, in order to be able to realize the necessary noise damping chambers and the low pressure accumulator bores. On the other hand, there is the need to remove a large machining volume from the block by means of various drilling operations from different directions. Consequently, sophisticated measures are needed, especially for making the noise damping chambers and the necessary pressure fluid channels. Further, the chosen split-up of the valve rows necessitates locating the wheel brake ports on both lateral surfaces of the block-shaped accommodating member so that a connection pattern for the pipe system is achieved which is split onto three lateral surfaces of the accommodating member. This, in turn, requires more space and increases the number of assembly steps needed.
In view of the above, an object of the present invention is to manufacture a hydraulic aggregate of the above-mentioned type which is dimensioned as small as possible and is as inexpensive as possible to make. A special object is to reduce the effort in manufacture for connecting the noise damping chambers to the brake pressure generator ports, and the hydraulic connections of the pump bores and the second valve row that accommodates the output valves along with the noise damping chambers and the connection of the low pressure accumulator bores by way of the pump bore to the noise damping chambers.
REFERENCES:
patent: 5538335 (1996-07-01), Saito et al.
patent: 5593216 (1997-01-01), Hosoya et al.
patent: 6102495 (2000-08-01), Zaviska
patent: 6260933 (2001-07-01), Dinkel et al.
patent: 6270170 (2001-08-01), Isogai et al.
patent: 6398315 (2002-06-01), Dinkel et al.
patent: 6428121 (2002-08-01), Dinkel et al.
patent: 39 07 969 (1990-09-01), None
patent: 41 07 979 (1992-09-01), None
patent: 197 32 771 (1999-02-01), None
patent: 198 08 626 (1999-09-01), None
patent: 0 687 814 (1995-12-01), None
patent: 10047256 (1998-02-01), None
patent: 91 16220 (1991-10-01), None
patent: 94 27045 (1994-11-01), None
patent: 97 18113 (1997-05-01), None
patent: 98 56630 (1998-12-01), None
patent: 99 25594 (1999-05-01), None
Dinkel Dieter
Hinz Axel
Reinartz Hans-Dieter
Vogel Günther
Continential Teves AG & Co. OHG
Rader & Fishman & Grauer, PLLC
Siconolei Robert A.
LandOfFree
Hydraulic aggregate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic aggregate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic aggregate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3336422