Patents by Inventor Andrew Ross Bradley

Andrew Ross Bradley 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).

  • Controlling pressure in brake actuation outputs
    Patent number: 6883875
    Abstract: A valve arrangement is disclosed for controlling the pressure in first and second brake actuation outputs (9, 10). First and second air inlet valves (1,3) supply air to respective ones of the actuation outputs; first and second exhaust valves (2,4) are each associated with a respective one of the inlet valves; and a link valve (11) is between the actuation outputs. The arrangement is such that the pressure in each of the actuation outputs is controllable selectively either in mode a) jointly, with the link valve enabling air flow between the actuation outputs or in mode b) independently, with the link valve blocking air flow between the brake actuation outputs.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: April 26, 2005
    Assignee: Westinghouse Brakes (UK) Limited
    Inventors: Derek Tate, Andrew Ross Bradley
  • Controlling pressure in brake actuation outputs
    Publication number: 20030155808
    Abstract: A valve arrangement is disclosed for controlling the pressure in first and second brake actuation outputs (9, 10). First and second air inlet valves (1,3) supply air to respective ones of the actuation outputs; first and second exhaust valves (2,4) are each associated with a respective one of the inlet valves; and a link valve (11) is between the actuation outputs. The arrangement is such that the pressure in each of the actuation outputs is controllable selectively either in mode a) jointly, with the link valve enabling air flow between the actuation outputs or in mode b) independently, with the link valve blocking air flow between the brake actuation outputs.
    Type: Application
    Filed: March 24, 2003
    Publication date: August 21, 2003
    Inventors: Derek Tate, Andrew Ross Bradley