Patents by Inventor Nelson E. Rau

Nelson E. Rau 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: 5695113
    Abstract: A mail indicator including a weight reactive mechanism that is positionable within a conventional rural mail box and that includes a weight receiving plate that is mechanically linked to a pair of electrical contacts in a manner such that the electrical contacts change contact state when a weight of greater than one-quarter (1/4 Oz.) ounce is supported by the weight receiving plate; an electrically powered light emitting device wired in series with the pair of electrical contacts; and a power source connection bracket having a first and second terminal, the first and second terminals being connected in series with the pair of electrical contacts.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: December 9, 1997
    Inventors: Nelson E. Rau, Keith P. Rau