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:
Mar. 06, 2001
Filed:
Apr. 16, 1999
Thomas Bartsch, Niedernhausen, DE;
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Abstract
Hydraulic Brake System with a Device for Active Braking In order to enable a hydraulic brake system which has a self-priming return pump (,) to quickly fill the wheel brakes (,) in an active braking operation, the present invention discloses the provision of a pressure-volume converter (,) on the pressure side of the return pump (,). The converter (,) causes a large pressure fluid volume to be conducted into the brake line (,) to the wheel brake (,) concerned at a small delivery volume of the return pump (,). This is possible because a return pump can generate high pressure and, thus, produce a sufficient amount of force to displace a stepped piston which can then displace a large quantity of pressure fluid. To permit the development of a sufficient back pressure on the pressure side of the return pump (,), a pilot pressure non-return valve (,) is arranged in the pressure line (,) which extends in parallel to the pressure-volume converter (,). Valve (,) permits the passage of the delivered pressure fluid volume to the brake line (,) only when a pilot pressure prevails.