The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2002
Filed:
Mar. 09, 2000
Applicant:
Inventors:
Robert Spillner, Dusseldorf, DE;
Hans-Willi Gerigk, Oberhausen, DE;
Assignee:
TRW Fahrwerksysteme GmbH & Co. KG, Dusseldorf, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/924 ; F04B 4/900 ; F04B 2/302 ; F01C 1/908 ;
U.S. Cl.
CPC ...
F04B 1/924 ; F04B 4/900 ; F04B 2/302 ; F01C 1/908 ;
Abstract
A hydraulic pump system having a pump for pressurizing fluid and a hydraulic chamber for receiving fluid from the pump. An even flow of fluid is outputted from the chamber to a valve assembly. The chamber is formed from a resonator and a resonator cover that are attached in a fluid tight manner by elastic fasteners. The resonator cover acts as a pressure controller in that when the pressure of fluid is of sufficient magnitude, this force creates a gap for controlling fluid pressure output to the valve assembly.