Patents by Inventor Douglas M. Brademeyer

Douglas M. Brademeyer 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).

  • Compression lower preloaded ball joint
    Patent number: 5509749
    Abstract: A compression lower ball joint includes a ball pivotally mounted in a socket. The ball includes a substantially hemispherical bearing with a recess receiving a post of a stud which includes a parti-spherical head adapted to mate with the bearing. A spring is disposed between the post and the bearing providing a preload to force the bearing and stud apart maintaining the joint in a tight condition until a predetermined amount of wear has occurred. This provides a positive indication of when the joint is worn and in need of replacement.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: April 23, 1996
    Assignee: General Motors Corporation
    Inventors: Charles D. Eifert, Patrick H. Fullenkamp, Douglas M. Brademeyer