Patents by Inventor Matthew Harrold

Matthew Harrold 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: 5641272
    Abstract: In float actuated pump having a rod and lever actuation from the float, an improved connect between the rod and lever is disclosed enabling valve opening substantially free of constraint by the rod and attached fittings. Such arrangement also enabling exhaust valve opening in a two-step momentum inducing method. Specifically, a valve actuating lever biased by a counter weight at one lever end, connects to the operating rod at the improved joint at the other lever end. The end of the rod is provided with an arcuate slot made of magnetic attractive material. The lever connects at a lever pin to the arcuate slot. The curvature of the slot prevents towards and away movement of the rod; the length of the slot gives free up and down rod movement at the lever pin within the elongate slot. At the top of the travel of the arcuate slot, a magnet is included in the pump head.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: June 24, 1997
    Assignee: Clean Environment Engineers
    Inventor: Matthew Harrold