Patents by Inventor John Hamphrey

John Hamphrey 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: 20030095849
    Abstract: In combination, an elongated tool having a striking end and a tapered insertion end and a drift pin cap. The drift pin cap includes a cap body having an upper end, a lower end and at least one side wall extending between and connecting the upper end and the lower end. A drift pin receiving cavity is formed in the lower end of the cap body which extends upwards towards the upper end within the cap body, the pin receiving cavity having a diameter smaller than a diameter of the cap body. The pin receiving cavity is operative to fit over and be retained on the striking end of the tool such that when the tool is impacted by a driving device, the drift pin cap is interposed between the tool and the driving device to prevent damage to the tool yet still permit driving of the tool.
    Type: Application
    Filed: November 21, 2002
    Publication date: May 22, 2003
    Inventors: John Hamphrey, Dean Wieser