Patents by Inventor Nelson J. De Angelo

Nelson J. De Angelo 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).

  • Combination lockout/holdback apparatus
    Patent number: 5087090
    Abstract: An inside operator for a lock having a spring biased bolt includes a shaft which can be immobilized, thus preventing longitudinal bolt motion, by applying force in the axial direction to the handle of the operator. The operator shaft is telescopic to ensure that the coupling of the operator shaft to the bolt is not interrupted as the operator is switched between operational modes.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: February 11, 1992
    Assignee: International Security Products, Inc.
    Inventors: Edward F. Humphrey, Nelson J. De Angelo, David W. Florian
  • Lock actuator with removable operator
    Patent number: 5010754
    Abstract: An actuator for a lock is provided with a operating handle which may be easily removed through the use of a special key and may also be reinstalled without the use of the special key or tools. The actuator may be "rekeyed" as necessary to maintain security and removal of the handle will lock the actuator.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: April 30, 1991
    Assignee: Lori Corporation
    Inventors: Nelson J. De Angelo, Kenneth T. Theriault