Patents by Inventor Edward A. Tieman

Edward A. Tieman 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).

  • Patent number: 4683775
    Abstract: A speed sensing differential axle mechanism provides a plurality of teeth formed in a small diameter end portion of a differential case. In a preferred form, the teeth are integral to the case, spaced uniformly about the small diameter end portion thereof, and are disposed for relative rotation with respect to a stationary electronic pickup element secured rigidly in an associated external carrier. In the preferred embodiment, the pickup element is totally enclosed within the carrier, whereby it is protected from external environments, as well as from splash and spray oil circulating within the differential assembly. For the latter purpose, an internal baffle is utilized to protect the internal pickup element from the oil.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: August 4, 1987
    Assignee: Dana Corporation
    Inventors: Gregory J. Hilker, Edward A. Tieman