A MOTOR DRIVEN BY PRESSURE MEDIUM SUPPLIED FROM AN EXTERNAL PRESSURE SOURCE

摘要

A motor (20) is driven by pressure medium delivered from an external pressuresource. A rotor part (28) forms sealing abutment against a local area (2Id) ofthe motor's (20) cylindrical inner wall (21c). A piston- forming plate part(30) is pivot- mounted at one end to the rotor part (28) and can be pivotedforwards and backwards in the motor casing's working chamber (21) relative tothe rotor part (28). At the same time at its opposite end the piston-formingplate part (30) forms sealing abutment along the motor casing's (26) circularinner wall (21c).