Magnetic Rail Patents (Class 246/167M)
  • Patent number: 5569987
    Abstract: A power supply system for a long-stator drive, whose stator winding along a path for a magnetic levitation train is subdivided into several controllable stator segments. The stator segments are controllable via at least one segment switch on at least one section cable system running along the stator segments. At least one frequency transformer is provided per section cable system, with the frequency transformer(s) arranged in at least one substation along the stator segments. Each frequency transformer generates a supply voltage system for the stator segments, with the nominal voltage in the section cable system being greater than the nominal voltage of the stator segments. At least one matching transformer is connected between the section cable systems and the stator segments, through which the nominal voltage of the section cable system can be transformed down to the nominal voltage of the stator segments.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: October 29, 1996
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rolf Fischperer
  • Patent number: 5141183
    Abstract: An apparatus and method for determining one or more operating characteristics of a vehicle mounted to and movable on a rail. A magnetic strip is mounted to the rail, and is provided with alternating regions of flux and no-flux. The vehicle is provided with a magnetic sensor, which senses the alternating flux regions of the magnetic strip as the vehicle move on the rail and outputs a signal in response thereto. The signals output by the sensor are processed by a micro-controller, to determine the vehicle speed, location and/or displacement from a predetermined point. The system is advantageously employed in any number of applications, such as in factory automation systems, automated material storage and retrieval systems, overhead crane control systems or the like.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: August 25, 1992
    Assignee: Electromotive Systems, Inc.
    Inventors: Keith O. Jurkowski, Joseph L. Neidinger
  • Patent number: 3984073
    Abstract: An antenna apparatus is disclosed for improved coupling of audio signals in relation to the vehicle track of a transit system operative with steel rails and providing a reduced cost for the associated hardware and lower crosstalk with adjacent signal blocks and track rails.
    Type: Grant
    Filed: October 17, 1974
    Date of Patent: October 5, 1976
    Assignee: Westinghouse Electric Corporation
    Inventors: David H. Woods, Robert H. Perry