Patents by Inventor John Blakemore

John Blakemore 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).

  • Patent number: 7287519
    Abstract: An apparatus (100) for a gaseous fuel injection system includes a first chamber (15b) connectable with a source of gaseous fuel at a required inlet pressure, a second chamber (15c) connectable with an engine or other apparatus so as to supply gaseous fuel thereto and further connected with said first chamber (15b) through a controllable valving means. A flow control means (25) has an inlet connectable with the first chamber (15b) and an outlet connectable with an orifice (25b) for controlling the pressure at the outlet of the flow control means (25) to be no more than 53% of the inlet pressure.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: October 30, 2007
    Inventor: John Blakemore Harrison
  • Patent number: 4858483
    Abstract: The present invention relates to a torque converter device which is suitable for use incorporated in a wheelchair. The device includes, on each side of the wheelchair, two one-way clutches such as that which is illustrated in FIGS. 10-11 of the U.S. Pat. No. 4,763,544, coupled together with a handle mechanism so that when a user manipulates the handles forward and backward, force is transmitted to the wheels of the wheelchair. By twisting the handles in one direction or another, the directions of movement of the wheelchair may be reversed.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: August 22, 1989
    Inventor: John Blakemore