Patents by Inventor Robert I. Hochman

Robert I. Hochman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Current sensor for monitoring a wayside signal lamp for a positive train system
    Patent number: 9701327
    Abstract: A sensor for monitoring the current flowing in a wire of a circuit is provided. The sensor includes a variable inductance contactless current detector to sense the current flowing in the wire, serially connected to an internal power source and a resistor to form a voltage divider circuit. The sensor also includes a voltage detector to monitor the voltage level across the resistor and generate an output signal. A system is also provided.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: July 11, 2017
    Assignee: ALSTROM TRANSPORT TECHNOLOGIES
    Inventors: Robert I. Hochman, Bruce Vernon Johnson
  • Current Sensor for Monitoring a Wayside Signal Lamp for a Positive Train System
    Publication number: 20150028163
    Abstract: A sensor for monitoring the current flowing in a wire of a circuit is provided. The sensor includes a variable inductance contactless current detector to sense the current flowing in the wire, serially connected to an internal power source and a resistor to form a voltage divider circuit. The sensor also includes a voltage detector to monitor the voltage level across the resistor and generate an output signal. A system is also provided.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: ALSTOM TRANSPORT SA
    Inventors: Robert I. Hochman, Bruce Vernon Johnson
  • Pulse code railway signalling system
    Patent number: 5271584
    Abstract: A railway signalling system uses coded electrical information signals to convey vital signal information to wayside signal locations. The coded information signals are in the form of unipolar three-pulse DC signals capable of being sent or received during a 1.4 second transmission or receiving cycle. The system establishes greater signalling capability than prior systems which used only a two-pulse DC signal.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: December 21, 1993
    Assignee: General Railway Signal
    Inventors: Robert I. Hochman, William A. Petit