Patents by Inventor Charles G. Dauwalter

Charles G. Dauwalter 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).

  • Safety lock device for screw fasteners
    Patent number: 5624218
    Abstract: A safety lock device when combined with at least one pair of spaced screw fasteners, which by observation indicates tightness of the fasteners or looseness of either or both fastener, and additionally to limit counter rotation of either fastener to a small faction of a turn, characterized by a pair of replaceable caps anchored to each fastener, and a loose lanyard extending between the caps when the fasteners are in tightened condition, also any multiplicity of caps tethered by lanyards.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: April 29, 1997
    Inventor: Charles G. Dauwalter