Patent ID: 6477835
Filing Date: 2002-11-12
Classification: B29C,F16D

Abstract:
A device for moving a load rotationally and axially relative to a body, comprising:a body; a motor mounted on said body and having an output shaft operatively arranged to move said load rotationally relative to said body; a piston movably mounted on said body and defining therewith a variable-volume first chamber, said piston being operatively arranged to move said load axially relative to said body; an accumulator charged to a predetermined pressure; a fluid in said first chamber and accumulator; a pump driven by said motor, said pump being operatively arranged to displace fluid from said first chamber to said accumulator; and a valve operatively arranged to selectively permit pressurized fluid in said accumulator to flow into said first chamber to move said piston and load in one direction axially relative to said body.