专利名称：Pump with reciprocating high pressure seal
and valve for vehicle braking systems
发明人：Patrick H. Hool,Westley J. Wilke申请号：US10901494申请日：20040728公开号：US07104613B2公开日：20060912
专利附图：
摘要：A pump assembly with a combination reciprocating high-pressure seal and fluidinlet check valve for use within brake systems. The pump assembly comprises a housinghaving a bore formed therethrough and a piston disposed within the bore for reciprocal
movement therein. An annular seal is disposed around the piston for reciprocalmovement thereon. The annular seal cooperates with the piston and/or the housing toform at least one longitudinally extending passageway. The passageway, the piston, theannular seal, and the housing cooperating to form a check valve assembly. The annularseal is moveable to a first position relative to the piston in which the check valveassembly is in a flow-through position to fill a pump chamber with fluid from an inletchamber during a fluid inlet stroke. The annular seal is moveable to a second positionrelative to the piston in which the check valve assembly is closed.
申请人：Patrick H. Hool,Westley J. Wilke
地址：Saint Clair MI US,Lincoln Park MI US
国籍：US,US
代理机构：MacMillan, Sobanski & Todd, LLC
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