Patents by Inventor Terence Day

Terence Day 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).

  • Publication number: 20060171836
    Abstract: An apparatus to pump fluid comprises an annular bore (12) and at least one pair of pistons (15, 16) which travel along the bore (12). The pistons (15, 16) can be releasably locked to a rotating plate like member (14) to travel through the bore (12). One piston (15) moves with the rotating plate (14) to be the travelling piston while the other piston (16) is locked in the bore (12) to become the stationary piston. As the travelling piston hits the rear of the stationary piston, a changeover occurs where the travelling piston becomes locked to the bore (12) to become the stationary piston and the stationary piston becomes released from the bore (12) and locked to the rotating plates (14) to become the travelling piston. This arrangement is continuously repeated to provide a pump/compressor/engine and the like.
    Type: Application
    Filed: May 23, 2003
    Publication date: August 3, 2006
    Inventor: Terence Day