Patents Assigned to Ernst Paul Lehmann Patentwerk
  • Patent number: 5647463
    Abstract: An axle for track-bound electrical toy vehicles, particularly railroad vehicles, with an axle shaft which consists preferably of a synthetic material and to the end of which current-drawing wheel rims are rotatably disposed by means of ball bearings, the wheel bearings being slipped onto slip-on sections formed on the axle shaft, metallic plug contact pins being disposed at the axle shaft, which are connected in an electrically conducting manner with the ball bearings and protrude preferably radially for drawing current from the axle shaft.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: July 15, 1997
    Assignee: Ernst Paul Lehmann Patentwerk
    Inventor: Wolfgang Richter
  • Patent number: 5547090
    Abstract: Apparatus for automatically uncoupling track-guided toy vehicles includes a first coupling element pivotally mounted on one toy vehicle for pivotal movement between a coupling position and an uncoupling position and a second coupling element mounted on another toy vehicle. The first coupling element couples with the second coupling element when the first coupling element is in a coupling position, and the first coupling element uncouples from the second coupling element when the first coupling element is in an uncoupling position. A spring pivotally biases the first coupling element in the coupling position. A first pivotally suspends a pendulum from the first coupling member.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: August 20, 1996
    Assignee: Ernst Paul Lehmann Patentwerk
    Inventor: Michael Richter
  • Patent number: 5437233
    Abstract: A rail-cleaning locomotive for electrical toy and model trains with a cleaning unit including polishing disks rotated by an electric motor and lying on the rails, wherein the cleaning unit is disposed in a fore-part, coupled to the locomotive so that it can pivot about a vertical and slightly also about a horizontal axis, and is provided with a cleaning motor, which is separated from the driving motor of the locomotive, and wherein the polishing disks are constructed as cleaning wheels with guiding wheel flanges.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: August 1, 1995
    Assignee: Ernst Paul Lehmann Patentwerk
    Inventor: Wolfgang Richter
  • Patent number: 5423439
    Abstract: A remote-controlled uncoupling for an electric toy or model train with an electrically operated disengaging mechanism, particularly a hook coupling with coupling hooks, which can be pivoted about a horizontal axis and hooked into a coupling bracket of the respective counter-coupling part, wherein a response circuit, which emits a triggering signal for the disengaging mechanism whenever the train voltage is within a voltage gate, that is, between two threshold values for a specified time interval, is assigned to the electrically operated disengaging organ.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: June 13, 1995
    Assignee: Ernst Paul Lehmann Patentwerk
    Inventor: Wolfgang Richter