Engine water pump assembly and method of making sa

专利名称：Engine water pump assembly and method of

making same

发明人：Keith F. Hale,Joseph Paliwoda,Verle Propst申请号：US07/075407申请日：19870720公开号：US04746270A公开日：19880524

摘要：An engine water pump assembly is formed of a rotatable shaft divided along itslength into a bearing portion terminating in a drive connection and a sealing portionterminating in an impeller end upon which a water impeller is mounted. A tubular,journal-type bearing surrounds the shaft bearing portion. A pump housing surrounds theshaft and bearing and has an integral, enlarged chamber formed on one end within whichthe impeller is located. The opposite end of the housing has an opening through whichthe shaft drive connection extends. The bearing has an integral, annular flange whichsurrounds a part of the shaft sealing portion. A seal mounted upon the shaft sealingportion seals against the flange to prevent the flow of water from the impeller chamberto the bearing part of the housing and its opening. The housing is molded around thebearing to form an integral subassembly. The shaft and seal may be pre-assembled andthen inserted, as a subassembly, through the housing chamber towards and into thebearing and its flange.

申请人：DECO-GRAND, INC.

代理机构：Cullen, Sloman, Cantor, Grauer, Scott and Rutherford

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