Patents by Inventor Fredrick A. Chapman

Fredrick A. Chapman 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: 5373877
    Abstract: A log splitter having a log splitting station positioned between a log retaining plate and a hydraulic cylinder, both mounted upon an elongated frame, is disclosed. In use, the hydraulic cylinder, having a reciprocating piston rod to which a log splitting wedge is attached, pushes the wedge against a log positioned in the splitting station. A pump secured to the frame supplies pressurized hydraulic fluid to the hydraulic cylinder for movement of the piston rod. A valve, in fluid communication with the pump, regulates the flow of hydraulic fluid to the hydraulic cylinder. A knee pedal, positioned adjacent the log splitting station and associatively linked with the valve, selectively controls the hydraulic system and the motion of the reciprocating piston rod.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: December 20, 1994
    Inventor: Fredrick A. Chapman