Patents by Inventor David J. Frankenfield

David J. Frankenfield 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).

  • Anchoring means for wall braces
    Patent number: 4379650
    Abstract: The foot plates of a tilt-up wall bracing system are anchored to a concrete floor slab by means which positively clamp the floor slab to the foot plates. The clamping means include a throughbore in the floor slab, a threaded and L-shaped anchor bolt, a wedging spike, and a nut in threaded engagement with the anchor bolt.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: April 12, 1983
    Assignee: The Burke Company
    Inventor: David J. Frankenfield