Patents by Inventor Charles J. Wolk

Charles J. Wolk 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: 3991857
    Abstract: A materials handling device which comprises an upper load-receiving plate, a lower base plate in planar parallel relationship to said upper plate, said upper plate being of greater dimension than said lower plate and having a depending marginal flange, a pair of first and second lever units interengaging said upper and lower plates, said lever units being in spaced-apart planar parallel relationship and being pivotally interconnected intermediate their lengths. Each lever unit comprises an inner and outer arm adapted at one of their ends for movement linearly with respect to one of said plates. Fluid operated members are associated with each lever unit and are operatively interconnected therewith by means of a cam provided linkage. Said upper plate has mounted thereon a pair of swingable ramps.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: November 16, 1976
    Assignee: Charles J. Wolk
    Inventors: Charles J. Wolk, Milton Osterman