Patents by Inventor Robert T. Ruffer

Robert T. Ruffer 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: 5815939
    Abstract: A totally enclosed marking attachment for any tape measure which is engaged by lifting finger pull (10) to a preset stop (15) then releasing said lift. This causes a striker (3) which contains a nylon fiber saturated with a consumer determined color and type ink to thrust downward through a striker slide (10) and contact ink head (9) with the desired destination. Said striker (3) is then returned to its original (neutral) position by means of main spring (5). Upon the return of striker (3) slide cap (7), which was opened by said striker (3) on its downward motion, is retuned to its original position to close striker slide (2) by cap spring (8). The entire procedure can be performed with one hand.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: October 6, 1998
    Inventor: Robert T. Ruffer