ROTARY HYDRAULIC MOTOR Russian patent published in 1997 - IPC

FIELD: hydraulic engineering; hydraulic drives. SUBSTANCE: rotary hydraulic motor has cylindrical housing with covers. Housing accommodates movable blades forming working chambers, shaft and working chamber sealing arrangements with shaped blade seals and ring shaft and housing seals. Ring shaft and housing seals are made of high molecular materials in shape of triangular section pieces with straight or concave sides. Ring seals are installed in working spaces so that one of sides of profile is pointed to blade working chambers and others are mated with cover and shaft or housing. Ring seals can be made of resilient materials and mated with shaft or housing over conical surfaces. Length of conical surface of seal is smaller than length of conical surfaces of shaft or housing. Shaft ring seals can be manufactured of composite material in form of rigid resilient threads wound along seal perimeter and coated with soft binder. EFFECT: enlarged operating capabilities. 3 cl, 6 dwg