Patents by Inventor Dwight D. Edwards

Dwight D. Edwards 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).

  • Pressure responsive switch with cup shaped actuating member
    Patent number: 5047601
    Abstract: A pressure responsive switch apparatus comprising a housing including a wall defining a passageway having an end adapted to communicate with a source of fluid under pressure, a switch supported by the housing, an actuator which is movably supported by the housing and which includes an end extending into the passageway, an actuator for actuating the switch in response to movement of the actuator, and a cup-shaped member detached from the actuator and located within the passageway and between the actuator and the end of the passageway for sealingly engaging the wall and moving the actuator away from the end of the passageway in response to pressure from the fluid source.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: September 10, 1991
    Assignee: Square D Company
    Inventors: Stanley H. Edwards, Jr., Dwight D. Edwards, James B. Warren, Jackie C. Sullivan