Patents by Inventor Robert W. Shepard

Robert W. Shepard 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).

  • Molded plastic key molded joint and method of forming same
    Patent number: 4004392
    Abstract: In a plastic key joint wherein edge portions of two adjacent strakes are in relatively superposed, interfitted, edgewise engagement with each other in a manner to define a fully enclosed keyway therebetween, the present invention resides in deforming, preferably in an undulating or sine wave pattern, laterally opposite sides of the keyway prior to injecting, under selected pressure, flowable, hardenable key material into the keyway, thereby greatly increasing resistance of the joint to longitudinal shear stresses.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: January 25, 1977
    Assignee: Rohr Industries, Inc.
    Inventors: Robert W. Shepard, George R. Heffner