Patents by Inventor David Alan Fagence

David Alan Fagence 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).

  • Alarm device with multiple indicators and flameproof housing
    Patent number: 6144309
    Abstract: An alarm device 10 incorporates a sounder 11 and a strobe 12. The sounder and the strobe are controlled by a circuit board 17 that is located within a single flameproof housing 13. A pressure unit 23 produces the sound for the device with the sound passing through a sintered disc 24 into an upwardly and outwardly diverging cone 25 from the top of which the sound is reflected outwardly and downwardly within a dome 26. A ramp 27 then assists in reflecting and emitting the sound.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: November 7, 2000
    Assignee: Signature Industries Limited
    Inventor: David Alan Fagence
  • Combined alarm unit and light
    Patent number: D391186
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: February 24, 1998
    Assignee: Signature Industries Limited
    Inventor: David Alan Fagence