Patents by Inventor Karl S. Drabsch

Karl S. Drabsch 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: 4493582
    Abstract: A multiple tenon joint for wooden frames in particular for solid wood strut constructions such as are usual in tables, chairs and furniture frames.Owing to the generally small dimensioning of wooden components, the known joint constructions are not sufficiently stable. This problem is solved by the use of machined square multiple tenons which are pressed into round cylindrical multiple bores and are glued, the glue flowing back in open segments between the tenon and bore walls. The bores are smaller in diameter than the diagonal dimension of the tenons.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: January 15, 1985
    Inventor: Karl S. Drabsch