Patents by Inventor Daniel Robert Rees

Daniel Robert Rees 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).

  • Relay circuit
    Patent number: 7593198
    Abstract: A switching circuit for connecting a power source to a load is described. The circuit comprises a first relay and at least one second relay in parallel arrangement with the first relay. The switching circuit is arranged such that in the event of a fault condition occurring that requires the disconnection of the power source from the load, the at least one second relay opens while the first relay remains closed. In this manner, a reliable disconnection of the load from the switching circuit is achieved.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: September 22, 2009
    Assignee: P G Drives Technology Ltd.
    Inventors: Richard Peter Brereton, Duncan Hamilton, Daniel Robert Rees
  • Relay circuit
    Publication number: 20070268640
    Abstract: A switching circuit for connecting a power source to a load is described. The circuit comprises a first relay and at least one second relay in parallel arrangement with the first relay. The switching circuit is arranged such that in the event of a fault condition occurring that requires the disconnection of the power source from the load, the at least one second relay opens while the first relay remains closed. In this manner, a reliable disconnection of the load from the switching circuit is achieved.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 22, 2007
    Applicant: P G Drives Technology Ltd.
    Inventors: Richard Peter Brereton, Duncan Hamilton, Daniel Robert Rees