Patents by Inventor David L. Walchle

David L. Walchle 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).

  • Microscope drape and method of making same
    Patent number: 4183613
    Abstract: A microscope drape fabricated from a thin soft, relatively inexpensive, plastic film which will melt at temperatures considerably lower than the temperatures which are developed by the illuminating lamp of an operating microscope, is provided with a heat barrier loosely secured to and carried by the inner surface of that portion of the film which, but for the presence of the barrier would be adversely affected by the temperatures induced within the drape adjacent the illuminating lamp of the drape-enshrouded microscope.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: January 15, 1980
    Assignee: Xomed, Inc.
    Inventors: David L. Walchle, Richard Pierson