Patents by Inventor Harold J. Koester

Harold J. Koester 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).

  • Self aligning magnetic locking device for module swivel caster assembly
    Patent number: 4054965
    Abstract: A vehicle having a swivel caster wheel. The caster wheel has two spaced magnets attached to a fixed part of the caster and a third magnet attached to the caster fork so that the third magnet is influenced by the field of the first and second magnets, moving the caster to a predetermined position when the wheels are lifted from the floor. The wheels caster to proper position when they again engage the floor.
    Type: Grant
    Filed: May 4, 1976
    Date of Patent: October 25, 1977
    Assignee: American Sterilizer Company
    Inventors: Satinder K. Vig, Harold J. Koester, William H. Berg, Jr.