Mechanical-motor Actuation Patents (Class 246/262)
Electric control (Class 246/263)
  • Railroad yard switch machine
    Patent number: 7267304
    Abstract: A railroad switch machine which is normally operated by an electric motor but which may be manually operated without causing rotation of the power shaft of the electric motor to enable the switch machine to move the switch points without having to overcome the brake resistance applied to the power shaft by the brake and gearbox thereof.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: September 11, 2007
    Inventor: Jerry L. Scheer
  • Railway switch setting device
    Patent number: 6056244
    Abstract: A device for setting railway switches includes a plurality of interlinked hydraulic switching devices (6) connected to a separate reversible hydraulic drive unit in a manner offset in the longitudinal direction of the rails, wherein the working volumes of the hydraulic cylinder piston aggregates (6) are connected to driving movement in same direction. The pistons (20) or plungers (11) include push-open valves (18) for travel limitation.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: May 2, 2000
    Assignee: Vae Aktiengesellschaft
    Inventors: Gerald Durchschlag, deceased, Herbert Achleitner
  • Device for operating switches
    Patent number: 5687935
    Abstract: A device for operating switches includes a plurality of interlinked hydraulic switching devices (7) offset in the longitudinal direction of the rails. The first mechanical switching device is connected with a hydraulic cylinder/piston unit acting as a pumping element, the working volumes (13) of this first hydraulic cylinder/piston unit (7) acting as a pumping element being connected with the working volumes (13) of consecutive hydraulic cylinder/piston units (7) so as to be driven in same direction.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: November 18, 1997
    Assignee: VAE Aktiengesellschaft
    Inventors: Gerald Durchschlag, Herbert Achleitner