Auxiliary Car Propulsion Patents (Class 104/190)
  • Returning system for rail-borne transporting carts without self-driving means
    Patent number: 5327836
    Abstract: A returning system for rail-borne transporting carts without self-driving means is provided with an auxiliary drive system which has an auxiliary drive wheel in the form of a friction wheel. The friction wheel clamps, for transporting a cart and cooperating with a contact pressure part with suitable parts of the transporting cart and transfers the latter from a transporting track to a return track located under the transporting track.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: July 12, 1994
    Assignee: Schott Glaswerke
    Inventors: Hubert Christ, Helmut Pfenning
  • Linear motor
    Patent number: 4789815
    Abstract: A linear motor comprises a rail; a runner moved along the rail; a plurality of permanent magnets disposed in the rail along the longitudinal direction of the rail so as to alternately arrange the opposite polarities of the permanent magnets; coils disposed in the runner and arranged to oppose the permanent magnets; Hall elements disposed in the coils; and a control unit disposed in the runner and controlling an electric current supplied to the coils based on signals output from the Hall elements.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: December 6, 1988
    Assignee: Ohi Seisakusho Co., Ltd.
    Inventors: Fumio Kobayashi, Kunio Sakai, Jun Yamagashi