Patents by Inventor James R. Burk

James R. Burk 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: 3994157
    Abstract: An apparatus and a method is disclosed for determining the crushing strength of pellets of a powdered material by compressing individual pellets between one pellet-contacting face on a force-exerting means and another pellet-contacting face on a force-measuring transducer. The transducer provides an output current at a voltage which varies in correspondence to the compressive force that is applied to a pellet during the crushing thereof. Accordingly, a pellet is first placed between the aforesaid pellet-contacting faces and the force exerting means is then driven toward the transducer at a controlled rate for compression and crushing of the pellet. Current voltage from the transducer is recorded permanently on a chart or else temporarily by means of a peak voltage remembering module in conjunction with a voltmeter having a digital read-out.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: November 30, 1976
    Assignee: Cities Service Company
    Inventors: James R. Burk, Robert C. Bates