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:
Nov. 07, 2006
Filed:
Jul. 25, 2002
Peter Drott, Frankfurt am Main, DE;
Peter Volz, Darmstadt, DE;
Thomas Bartsch, Niedernhausen, DE;
Continental Teves AG & Co., OHG, Frankfurt, DE;
Abstract
An actuator unit for an electro-hydraulic brake system of the 'brake-by-wire' type, the first and second pistons thereof being preloaded by a resetting spring each in opposition to the actuating direction. The first pressure chamber of the tandem master cylinder is connected to a hydraulic chamber limited by a simulator element. On the other hand, the simulator element defines a simulator chamber that accommodates a simulator spring and is connected to a pressure fluid reservoir. A valve device is provided to open or close the hydraulic connection between simulator chamber and pressure fluid reservoir. To increase the reliability in operation of a hydraulic fallback mode, at least one channel portion through the pressure chamber, closed at the edge at least in areas, is provided for the purposeful removal of pressure fluid contaminants by means of a compulsory pressure fluid scavenging operation.