Patent ID: 6902382
Filing Date: 2005-06-07
Classification: F03C,F04C

Abstract:
1. A hydraulic motor comprising a housing having a fluid inlet, a fluid outlet and a cavity there between, a pair of intermeshing gear elements rotatable in said cavity about mutually parallel axes, each of said gear elements having a set of gear teeth disposed about the periphery of said element and a support shaft extending from oppositely directed end faces of said set of gear teeth, a bearing assembly located on opposite sides of said cavity in said housing to support said shafts for rotation about respective ones of said axes, each of said bearing assemblies having a sealing face overlying said end faces and biased into engagement with said end face by a pressure compensating seal located between the oppositely directed surfaces of said bearing and said housing, said sealing face having a channel extending partially about said shaft and in fluid communication with said inlet to introduce fluid under pressure between said sealing face and said end faces of said gear teeth.