Patents by Inventor Robert P. Krason

Robert P. Krason 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: 4529183
    Abstract: To make parts requiring machining with the workpiece vise-held in different orientations, there is provided a precision vise having first and second pairs of jaws, each pair having a member which is fixedly located with respect to a reference location. The invention includes use of a particular form of vise for holding two pieces whereby the screw shaft that rotates to open or close the jaws is tensioned during tightening, which improves accuracy by avoiding bending stresses. When used in conjunction with suitable numerical-control equipment, the vise of the invention greatly increases productivity in the machining of product parts of the kind indicated above.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: July 16, 1985
    Inventors: Robert P. Krason, James P. Chick