IMPROVEMENTS IN ELECTRIC MOTOR DRIVEN HYDRAULIC PUMPS

摘要

An electric motor driven hydraulic pump (1, 2) in which an internal rotor (9) is rotatable relative to an external stator has a non-magnetic sleeve which is provided for sealing a chamber in which the rotor (9) is located, the non-magnetic sleeve being so constructed and arranged that when subject to pressure within the chamber the sleeve (10) is adapted to define a sleeve member which is substantially integral with the stator (11).