Patents by Inventor Burch E. Zelner

Burch E. Zelner 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).

  • Temperature cycling test chambers
    Patent number: 5147136
    Abstract: Two environmental test zones at different temperatures are separated by an insulated wall. A portion of the wall is rotatable and is designed to hold a test specimen thereon. By rotating this portion of the insulated wall, the specimen is exposed to different temperature zones in recurrent cycles. The two temperature zones are readily separable for ease in removing and installing test specimens.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: September 15, 1992
    Assignee: Crane Plastics Company
    Inventors: Jeffrey W. Hartley, Burch E. Zelner