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:
Jul. 15, 2003
Filed:
Oct. 30, 2001
John E. Mackiewicz, Niles, MI (US);
William John Penninger, Niles, MI (US);
Robert Bosch Corporation, Broadview, IL (US);
Abstract
A hydraulic brake booster ( ) having a housing (100,200) with a first bore ( ) separated from a second bore ( ). The first bore ( ) retains a power piston ( ) and the second bore ( ) retains a control valve ( ). The first bore ( ) is connected by a passage ( ) to the second bore (104) that is connected to a source of pressurized supply fluid (24). In responsive to a desired braking force being applied to the input member (30,30′), the lever arrangement ( ) moves the control valve ( ) to allow controlled pressurized supply fluid to be communicated from the second bore ( ) by way of passage ( ) to the first bore ( ). The hydraulic brake booster ( ) is characterized by adjustable regulator means ( ) connected to the first bore ( ) for communicating a proportional reaction signal to the input member ( ′) that is derived from the controlled pressurized supply fluid to produce a variable gain between the input force applied to the input member ( ′) by the operator and the operational force developed through the power piston ( ) to effect a brake application.