Patents by Inventor James E. Dever

James E. Dever 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: 5896907
    Abstract: A rolling fire door includes a door hold-open/release system that includes an electromagnet which is energized by a controller when the door is in the open position. The energized electromagnet magnetically attracts a bottom bar of the rolling door to secure the door in the open position. A key control station connected to the controller enables the electromagnet to be energized when the door is in the open position and enables the controller to deenergize the electromagnet so that the weight of the door causes the door to close. The key control station also includes a test switch which enables the controller to deenergize the electromagnet after a delay interval. The controller also deenergizes the electromagnet after a delay interval in response to activation of an alarm or in response to a thermal switch sensing a temperature in excess of a set point temperature.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: April 27, 1999
    Assignee: Cornell Iron Works, Inc.
    Inventors: James E. Dever, Richard M. A. Rodgers
  • Patent number: 4386645
    Abstract: A closure includes a plurality of vertical panels suspended from an overhead support and successively joined to one another by interlocking, alternate outer and inner pivot elements attached to the panel lateral edges. When the closure is collapsed the panels are folded about the pivot elements into a stacked, parallel diposition. Improved articulation between the panels is achieved by means of unique outer and inner pivot element components including respectively, a curved groove and a curved arm, both describing an arc of approximately 270.degree.. Female elements on the base of each pivot element cooperate with mating male elements joined to each panel lateral edge to allow ready assembly therebetween, with the panels themselves comprising either metal and/or a plastic composition.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: June 7, 1983
    Assignee: Cornell Iron Works, Inc.
    Inventors: James E. Dever, John A. Stascavage, William W. Rawls