Patents by Inventor Arthur Edward Brewster

Arthur Edward Brewster 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).

  • Train position indicator
    Patent number: 4038653
    Abstract: A low power radar mounted on the train interrogates passive transponders located along the track. Inductive coupling arrangements associated with the radar and each of the transponders inhibits responses from transponders other than the one immediately underneath the radar, and also for indicating failure of transponders.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: July 26, 1977
    Assignee: International Standard Electric Corporation
    Inventor: Arthur Edward Brewster
  • Electrical control systems
    Patent number: 3943489
    Abstract: A time-division multiplex (TDM) control system for controlling a plurality of devices from a central point includes a transmitter whose output is coupled over a common path to a plurality of receivers respectively located adjacent to the devices. The transmitter provides a repetitive cycle of a predetermined number of time slots during which a control signal is provided at any one or all of the time slots. Each receiver is assigned a given time slot corresponding to one of the time slots in the repetitive cycle of the transmitter, and each receiver is responsive to the control signal during its given time slot. Each receiver is operative to control one of the devices in response to the control signal.
    Type: Grant
    Filed: September 5, 1974
    Date of Patent: March 9, 1976
    Assignee: Standard Telephone and Cables Limited
    Inventors: Arthur Edward Brewster, Donald Adams Weir, Christopher Alan Watson, Roger Geoffrey George, Michael James Phillips