Patent ID: 6756707
Filing Date: 2004-06-29
Classification: F15B,F16H,H02K,Y10T

Abstract:
An electrically powered actuator comprising:an elongated housing having a proximal end defined by a proximal end block, a distal end defined by a distal end block and a longitudinal axis; a rotation shaft extending along said longitudinal axis and being rotatably supported within and axially fixed relative to said housing and having a proximal end and a distal end; a thrust member having a proximal end and a distal end, said thrust member being concentric with, and axially moveable relative to, said rotation shaft and said housing along said longitudinal axis, said thrust member further extending through said distal end block, with the distal end of said thrust member extending beyond and being axially moveable beyond said distal end block; a coupling nut connected with said thrust member and moveable therewith, said thrust member and said coupling nut being non-rotatable relative to said housing; an electric motor having an output drive shaft extending therethrough, said drive shaft having a proximal end on one side of said motor and a distal end on the other side of said motor, said output drive shaft being in-line and concentric with said rotation shaft, with the distal end of said drive shaft connected with the proximal end of said rotation shaft; and a rotary positioning encoder mounted to the proximal end of said output drive shaft.