Patents by Inventor Derrick A. Pizarro

Derrick A. Pizarro 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).

  • Locking system for gooseneck trailer hitch
    Patent number: 6880368
    Abstract: A method and an apparatus for locking a gooseneck trailer hitch such that a hitch ball cannot be inserted into or removed from the hitch. In one preferred embodiment, the hasp of a lock is passed through the retainer bracket of the hitch and locked with or without passing through the hitch handle. In another embodiment, a lock pin with an eyelet on one end is inserted into the retainer bracket of the hitch, and the hasp of a lock is passed through the eyelet and the hitch handle. In yet another embodiment, a lock pin with an eyelet on one end is inserted into a pair of openings on the cover plate surrounding the hitch handle, and the hasp of a lock is passed through the eyelet and the hitch handle.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: April 19, 2005
    Inventors: Dennis R. Ulbrich, Derrick A. Pizarro