Patents Assigned to Amir Nejati
  • Patent number: 5664457
    Abstract: A machine element in the form of a screw gear having a threaded circumferential portion adapted to be engaged by a standard thread screw used as a worm is disclosed. Relative rotation of the standard thread screw with respect to the threaded portion of the screw gear causes the screw gear to also relatively rotate. Additionally, linear motions of the screw are possible wherein the screw gear acts as a pinion while the standard thread screw acts as a rack. This screw gear and its associated standard thread screw can be operated as either a worm and gear or as a rack and pinion. The screw gear and/or standard thread screw engaged therewith may be manually or power operated. The screw gear can be made by cutting or forming a threaded circumferential portion on the screw gear blank with a standard screw tap of the same size as the standard thread screw with which the screw gear is to be used. Additionally the screw gear can be formed in other conventional manner such as by molding.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: September 9, 1997
    Assignee: Amir Nejati
    Inventor: Amir G. Nejati