Patents by Inventor David Charles Popp

David Charles Popp 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).

  • Roller lifter with improved oil injection port and supply groove
    Patent number: 9441505
    Abstract: A roller lifter (1) having an improved oil injection port (12) and oil supply groove (8) that is separated from an oil supply band area (7) and the engine oil supply gallery where debris commonly travels, thereby preventing the introduction of debris into the oil injection port and possible clogging of the oil injection port. The oil supply groove is angled to allow for oil to be easily collected by the oil supply groove.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: September 13, 2016
    Inventor: David Charles Popp