Patents by Inventor Friedrich W. Baethke

Friedrich W. Baethke 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).

  • Shaft coupling device
    Patent number: 4416563
    Abstract: A device for allowing the removal of a central or coupling shaft which is connected to a main shaft having its ends retained within bearing supports. At the joints between the coupling shaft and main shaft there is complementary coupling pieces which align the coupling shaft with the main shaft. A releasable collar maintains the shafts in a locking relationship and there are locating means on the shaft to positively position the collar around the joint.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: November 22, 1983
    Assignee: Bell & Howell Company
    Inventors: Edward H. Zemke, Kenneth L. Guenther, Friedrich W. Baethke