Patents by Inventor John R. Hollenbeck

John R. Hollenbeck 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).

  • Roller transducer apparatus
    Patent number: 6688178
    Abstract: A roller transducer assembly comprises at least one core section and each core section comprises a transducer. Oil is retained within the roller transducer assembly and in particular an oil kerf isolates each core section from an outer portion of the roller transducer assembly having a nylon roller tube which is surrounded by a urethane tire outer covering. The outer portion of the roller transducer assembly rotates about each stationary core section. A pair of the ultrasonic roller transducer assemblies are arranged to provide signals for generating an ultrasonic image of an article such as a board or a log passing between the pair of ultrasonic roller transducer assemblies.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: February 10, 2004
    Assignee: Materials Systems, Inc.
    Inventors: Gerald E. Schmidt, John R. Hollenbeck