Patents by Inventor Bernhard M. Haisch

Bernhard M. Haisch 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: 4941252
    Abstract: A hand-held tool capable of removing an anchor bolt, such as a molly bolt, from attachment to a wall. The tool of the present invention includes a pair of jaw members which move into gripping relationship onto the exposed end flange of an anchor bolt, following which a lead screw on the tool engages the attachment screw of the anchor bolt and forces the attachment screw inwardly of the wall. This action causes the legs of the anchor bolt to bend and to be straightened and to become sufficiently narrow in transverse dimension so that the anchor bolt can be manually pulled out of the wall through the hole provided therefor. In this way, the tool permits a quick and easy removal of an anchor bolt from a wall without having to damage the wall in any way.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: July 17, 1990
    Inventors: Bernhard M. Haisch, Marilyn E. Bruner