Patents by Inventor Robert Karr

Robert Karr 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: 5165313
    Abstract: A bar puller for a numerically controlled turret lathe having a mounting member for mounting the bar puller to one of the stations of a rotary turret on the lathe, the bar puller having a pair of gripping jaws that are pivotally mounted between clevis plates on pivot pins and biased by a plurality of compression springs, the jaw blocks carrying adjustable gripping members that engage the end of a bar stock and draw the bar stock in the chuck on displacement of the turret carriage with the gripping jaws being released by further displacement of the turret carriage after a chuck has been secured on the stock.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: November 24, 1992
    Inventor: Robert Karr