Electric Control Patents (Class 246/326)
  • Patent number: 4695016
    Abstract: A slow motion actuating device has a housing with a first opening therein through which an output pin extends. The output pin is connected to a swing arm which is pivotally mounted in the housing and driven by a set of reduction gears. Stops are provided in the housing for limiting movement of the swing arm. An electric motor is mounted in driving relation with the gear set. The motor has a stall current which is low enough to allow the motor to be continuously stalled without damaging it. A printed circuit board is mounted in the housing with a tail portion extending through a second opening in the housing. The circuit board provides electrical connections to the motor and auxiliary contacts which can be opened and closed by a wiper mounted on the swing arm.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: September 22, 1987
    Inventor: Stephen A. Worack
  • Patent number: 4093163
    Abstract: In a switch for rail points arranged to move two rails interconnected at one of their free ends, between two end positions in engagement with the inner face of one of two rails of e.g. a railroad track, a box girder having the configuration and dimensions of a conventional sleeper supporting the rail track, the box girder housing an electrically driven mechanism arranged to effect the movement of the two rails to the end positions thereof, and also a mechanism arranged to indicate when the two rails assume their intended end positions.
    Type: Grant
    Filed: January 11, 1977
    Date of Patent: June 6, 1978
    Assignee: Elektromekano i Bredaryd AB
    Inventor: Bertil Ivar Larsson