Brake master cylinder with axially movable sleeve
Patent 5887432 Issued on March 30, 1999. Estimated Expiration Date: 
July 28, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 28, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectronically controlled brake device Patent #: 5031968 InventorsAssigneeApplicationNo. 901798 filed on 07/28/1997US Classes:60/562, Master piston of one pulsator circuit drives master piston of a parallel circuit through a resilient, fluid or lost motion connection60/581, Plural structurally related master pistons, cylinders or pulsator circuits60/589, Master piston or its actuator mechanically operates valve between holder and master cylinder60/591Having valve, director, or restrictor in pulse fluid flow pathExaminersPrimary: Nguyen, HoangAttorney, Agent or FirmForeign Patent References
International ClassB60T 011/20Foreign Application Priority Data1996-07-26 DEAbstractA brake master cylinder with a plunger piston is acted upon by a brake linkage. A floating piston is arranged between two working spaces and separates the first and the second working space fluidically from one another. Each of the two working spaces opens into a main brake circuit, and the floating piston is axially movable in the brake master cylinder. A sleeve is axially movable in the brake master cylinder and is provided at least between the floating piston and the wall of the brake master cylinder. The sleeve and the wall of the brake master cylinder each have an opening which, in interaction, connect the first working space, formed by the floating piston and the plunger piston, to a displacement passage at least in the case of a movement of the floating piston into a first position in the direction of a brake actuation. With a movement of the floating piston beyond the first position, the sleeve is moved axially and separates the first working space from the displacement passage.Field of SearchMaster piston of one pulsator circuit drives master piston of a parallel circuit through a resilient, fluid or lost motion connectionHaving safety standby structure becoming operative upon apparatus malfunction Plural structurally related master pistons, cylinders or pulsator circuits Holder for reserve liquid feeds master Master piston or its actuator mechanically operates valve between holder and master cylinder Having valve, director, or restrictor in pulse fluid flow path | |
