Patents by Inventor Roger W. Scharf

Roger W. Scharf 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).

  • Tongue weight donut scale
    Patent number: 9004523
    Abstract: A tongue weight donut scale includes a tongue weight donut scale body having an upper planar surface, a lower planar surface, and a central opening having an inner diameter, a weight sensor coupled to the tongue weight donut scale body and generating a signal representative of a weight on the tongue weight donut scale, an indicator box converting the signal from the weight sensor into a weight value and providing a weight value output, and a display window displaying the weight value output. The tongue weight donut scale detects the tongue weight of a trailer attached to a trailer hitch ball, when the tongue weight donut scale is installed between the base of the trailer hitch ball and the ball support of a trailer hitch.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: April 14, 2015
    Inventor: Roger W. Scharf
  • Tongue Weight Donut Scale
    Publication number: 20140327229
    Abstract: A tongue weight donut scale includes a tongue weight donut scale body having an upper planar surface, a lower planar surface, and a central opening having an inner diameter, a weight sensor coupled to the tongue weight donut scale body and generating a signal representative of a weight on the tongue weight donut scale, an indicator box converting the signal from the weight sensor into a weight value and providing a weight value output, and a display window displaying the weight value output. The tongue weight donut scale detects the tongue weight of a trailer attached to a trailer hitch ball, when the tongue weight donut scale is installed between the base of the trailer hitch ball and the ball support of a trailer hitch.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 6, 2014
    Inventor: Roger W. Scharf