Patents by Inventor Robert W. Weller

Robert W. Weller 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).

  • Toggle wrench having pressure calculator means
    Patent number: 3958468
    Abstract: An improvement in the pressure selector of a toggle type wrench, provides a visual means of selecting and adjusting the amount or degree of pressure that will be applied to the workpiece during clamping, thus reducing the possibility of damaging the workpiece by applying to much pressure.
    Type: Grant
    Filed: June 13, 1969
    Date of Patent: May 25, 1976
    Inventor: Robert W. Weller
  • Visual input stress aid kit
    Patent number: D251606
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: April 17, 1979
    Inventor: Robert W. Weller
  • Visual input stress aid kit
    Patent number: D251607
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: April 17, 1979
    Inventor: Robert W. Weller