Patents by Inventor Keith R. Draper

Keith R. Draper 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).

  • Compact diaphragm pump for artesian bores
    Patent number: 4569643
    Abstract: A diaphragm pump for use for artesian bores, simple in construction and easy to maintain. The diaphragm pump has a rectangular box-like main body with a shaft having an eccentric formed on the shaft to provide the driving force for the pump. Rectangular diaphragms are provided which, together with arcuate side plates, define the respective pumping chambers of the pump. A cage configuration of a rightangular tubular construction surrounds the rectangular box-like main body. Inlet and outlet manifolds are provided with corresponding valves for entry of water into the pump and for the exit of water from the pump.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: February 11, 1986
    Assignee: Draper Development Corporation Pty., Ltd.
    Inventor: Keith R. Draper