Patents by Inventor Patrick A. Stewart

Patrick A. Stewart 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).

  • Power tool adaptor
    Patent number: 5110145
    Abstract: A power tool adaptor for converting a screw gun to a power drill. The adaptor comprises a torque transmitting sleeve mounted for relative rotation within a grip sleeve. Safety and speed of attachment and detachment are thereby provided.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: May 5, 1992
    Inventor: Patrick A. Stewart