Patents by Inventor Constant Maffey

Constant Maffey 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).

  • Trailer kingpin locking device
    Publication number: 20070029758
    Abstract: A security device is disclosed which mounts to a king pin of a trailer to prevent unauthorized coupling of the trailer to a tractor. The security device includes a austempered ductile iron dual shell body having an inner shell for receiving a trailer kingpin and an outer conical or contoured shell to prevent unauthorized coupling to the trailer kingpin. The security device further includes a stainless steel collar placed between the inner and outer shells for deterring damage.
    Type: Application
    Filed: August 2, 2005
    Publication date: February 8, 2007
    Inventors: Daniel Maffey, Constant Maffey