Patents by Inventor Alfred E. Floyd

Alfred E. Floyd 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).

  • Exit device with lock down mechanism
    Patent number: 4384738
    Abstract: A lock-down mechanism for use with an exit door wherein an electromagnet on the door attracts an armature on the push rail when the latter is pushed to unlatch the door, the door being held unlatched as long as the electromagnet is energized.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: May 24, 1983
    Assignee: Kidde, Inc.
    Inventor: Alfred E. Floyd
  • Disposable core for lock cylinder
    Patent number: 4143531
    Abstract: A disposable plug assembly to be used as a substitute for the removable core in a lock cylinder, as during the construction of a building, prior to installation of the final cores, the disposable core including a part which can be used to operate a cam or tail on the cylinder for actuating a latch bolt.
    Type: Grant
    Filed: December 28, 1977
    Date of Patent: March 13, 1979
    Assignee: Walter Kidde & Company, Inc.
    Inventor: Alfred E. Floyd
  • Magnetic card-operated electronic door lock
    Patent number: D288899
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: March 24, 1987
    Assignee: Sargent Manufacturing Company
    Inventors: Alfred E. Floyd, Richard J. Ohno
  • Electronic door lock
    Patent number: D290442
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: June 23, 1987
    Assignee: Sargent Manufacturing Company
    Inventors: Alfred E. Floyd, Richard J. Ohno