Patents by Inventor Hoopes, Mark S.

Hoopes, Mark S. 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).

  • Vacuum sizing apparatus with controlled vacuum
    Patent number: 5340295
    Abstract: A vacuum sizing apparatus with a controlled vacuum is provided. The vacuum is precisely controlled by the use of a variable speed motor driven vacuum pump and a step motor controlled vent valve. An electrical circuit containing a microprocessor coordinates the speed of the motor driven vacuum pump with the position of the vent valve to give precise vacuum control within the vacuum chambers of the sizing apparatus. A closed sump tank contains water for the water system of the apparatus and is maintained at the same vacuum level as the vacuum chambers within the sizing apparatus.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: August 23, 1994
    Assignee: The Conair Group, Inc.
    Inventors: Ernest J. Preiato, Marion M. Meetze, Hoopes, Mark S., Robert H. Bessemer