Drive nut and torque plate assembly

Claim 1

Apparatus, including: (a) a stem having external threading thereon; (b) body means having means defining a socket therein, which opens outwardly of the body means; the stem being axially received in the socket from outwardly of the body means; (c) connecting means threadably connecting the stem with the body means to provide extension and retraction of the stem relative to the body means upon relative rotation of the stem and body means, said connecting means comprising: nut means having a throughbore lined with internal threading which is complementary to the external threading on said stem, said nut means being threadably received on said stem, means defining a coaxially annular, rounded, radial projection on one of the exterior of the nut means and the body means intermediate the axial extend of the throughbore thereof, and means defining a coaxially annular, rounded, radially opening, groove on the other of the exterior of the nut means and the body means intermediate the axial extent of the throughbore thereof, the rounded projection being interdigitated with the rounded groove; and securement means pinning the nut means to the body means distally of said socket; the nut means including means providing flange means mounted thereon adjacent the axially outer end thereof relative to the said socket, and said securement means including a plurality of pins projecting axially through said flange means and being secured in said body means distally of said socket.