The half-rod, which is rigidly fixed to the crosspieces of the supporting base, fills the inner tube together with the spindle nut.

The internally threaded neck receives the threaded shaft in threaded telescoping relation.

The assembly includes a spindle and complementally threaded spindle housing to allow axial displacement of the spindle when rotated within the spindle housing.

A threaded dose adjuster (164, 166) is mounted within the body and engages a threaded stem (150).

A locking mechanism that is a non-threaded locking device for locking a rod in place within a screw and rod fixation assembly.

The driver (70) operates the piston rod (120) through a second thread connection having a pitch different than the first thread connection.

The bit (10) comprises a tubular body (12) threaded at one end for engagement with a pipe stem.

The rotary threaded rod (9) is rotatively fitted on the threaded nut (10).

The threaded rod passes through a threaded block which is connected to the proximal body.

A frothing element (40) is in threaded engagement with the guide rod (30) and can thus be moved along a helical path on the guide rod (30).

The plunger has a shaft (32) with a thread (33, 33') and the cylinder has a threaded sleeve part (26) with a thread (23, 23').

The plunger has a shaft (32) with a thread (33, 33') and the cylinder has a threaded sleeve part (26) with a thread (23, 23').

A threaded hole is formed in at least one end of the winding shaft.

The drive rod has a threaded shaft, which passes through the threaded bore on the carriage so that the threads of the threaded shaft are in complementary contact with the threads of the threaded bore.

The system includes an inferior disk coupled with a first end of a partially threaded connecting rod, and a superior disk having a central orifice operable to be threadably coupled with the connecting rod.