Patent ID: 6149391
Filing Date: 2000-11-21
Classification: F04C

Abstract:
A hydraulic displacement machine comprising:a housing including two sidewalls bounding a housing chamber therebetween;a rotor rotatably supported in said housing, comprising a rotary piston and at least one fluid displacement vane provided on said rotary piston, wherein said rotary piston is rotatably arranged in said housing chamber; andat least one pair of field generating elements selected from capacitor plates and electrical coils arranged respectively opposite each other on said two sidewalls, wherein at least one of said field generating elements of said pair is a movable field generating element arranged to be movable relatively toward and away from the other of said field generating elements of said pair;wherein said machine is adapted for use in connection with at least one of an electrorheolocic fluid and a magnetorheoloqic fluid in said housing chamber.