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. 20, 2001
Filed:
Aug. 02, 1999
Kenneth Scott Towers, Granger, IN (US);
John E. Mackiewicz, Niles, MI (US);
Richard Becker McClain, South Bend, IN (US);
Raymon Kosarski, Jr., Niles, MI (US);
Robert Bosch Corporation, Broadview, IL (US);
Abstract
A control apparatus (,) for a brake system (,) having a housing (,) with a first (,) and second (,) cylindrical members located in first (,) and second (,) bores. The first (,) and second (,) cylindrical members and corresponding first (,) and second (,) valve seat members define first (,) and second (,) chambers within the first (,) and second (,) bores which are connected to a source of pressurized fluid. First valve means (,) are located in the first chamber (,) and second valve means (,) are located in the second chamber (,). A first plunger means (,) in the first bore (,) and a first valve seat member (,) define a first brake chamber (,) which is connected to a first set (,) of wheel brakes and a second plunger means (,) in the second bore (,) and a second valve seat member (,) define a second brake chamber (,) in the second bore (,) which is connected to a second set (,′) of wheel brakes in the vehicle. A first stem (,) of the first plunger means (,) and a second stem (,) of the second plunger means (,) is connected to a balance lever (,) connected to an input rod (,). An input force applied to the input rod (,) simultaneously moves the stems (,) to initially interrupt communication between chambers (,) and a reservoir,. Thereafter, further movement of stems (,) moves balls (,′) away from valve seat members (,) and allows metered pressurized fluid to be communicated to the first (,) and second (,′) set of wheel brakes to effect a primary brake application. In response to dynamic conditions sensed by a cpu (,), solenoid valves (,) are activated to allow pressurized fluid to move the first (,) and second (,) valve seat members into corresponding engagement with first (,) and second (,) plunger means initially interrupt communication between chambers (,) and reservoir (,). Thereafter, further movement of the first (,) and second (,) valve seat members allows metered pressurized fluid to be communicated to the first (,) and second (,′) set of wheel brakes to effect a secondary brake application and attenuate a dynamic condition experienced by the vehicle.