Patents by Inventor Lynn M. Robinson

Lynn M. Robinson 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: 4136579
    Abstract: A power drill attachment for exerting pressure through the drill bit onto the workpiece has a toggle linkage to provide a mechanical advantage of such sensitivity as to permit the operator to easily and quickly control the amount of pressure being exerted throughout the drilling operation. The attachment is especially adapted for use when drilling holes in door and window frames, through floor joists, studs, rafters and other building framework.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: January 30, 1979
    Inventors: Merle W. Robinson, Lynn M. Robinson