Patents by Inventor Alan Daignault

Alan Daignault 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).

  • High intensity discharge lamp including arc extinguishing means
    Patent number: 4390811
    Abstract: A high intensity discharge lamp includes arc extinguishing means functional when the outer envelope of the lamp fails. The extinguishing means comprises a pressure sensing diaphragm and a terminal which will melt back when an arc is drawn therebetween. The extinguishing means operates within a time interval of several milli-seconds.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: June 28, 1983
    Assignee: GTE Products Corporation
    Inventors: Harold L. Rothwell, Jr., W. Calvin Gungle, Alan Daignault