Patents by Inventor Alton L. Barnhill

Alton L. Barnhill 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: 4462625
    Abstract: A safety entry latching arrangement characterized as a pivotal and extendible securing member attached to an existing door hinge assembly secured onto one side of the framework of an entry and selectively connecting to a latch member disposed on the framework at the opposite side of the entry. The securing member is preferably defined by two parts arranged in a slidable telescopic relationship, where spring urged structure serves to maintain the securing member in an outwardly or upwardly extending latching or storage position, respectively. In a typical arrangement, an audible signaling system can be combined with the handle for the securing member to afford additional protection for the user, i.e. to forewarn unwanted entry.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: July 31, 1984
    Inventor: Alton L. Barnhill