Patent Number: 6,167,769

Title: Screw mechanism

Abstract: A screw mechanism having a shaft which is guided in such a way that its reciprocating movement is converted at the output of the screw mechanism into a rotary movement. The shaft has a reciprocating rod and a round slide which are aligned axially with one another. At their mutually overlapping end regions, the reciprocating rod and the round slide respectively have guide surfaces which are of helical construction, run in the axial direction and are matched to one another in specular fashion. The round slide has an axial abutment of which limits the reciprocating movement of the round slide while the rotary movement is released. The reciprocating rod cooperates with a guide that prevents its rotation while permitting its reciprocation.

Inventors: Jager; Herbert (Sinsheim-Elsenz, DE)

Assignee: Mapal Fabrik fur Prazisionswerkzeuge

International Classification: F16H 25/18 (20060101); F16H 027/02 ()

Expiration Date: 01/02/2018