Electricity: electrical systems and devices – Safety and protection of systems and devices – Circuit interruption by thermal sensing
Reexamination Certificate
2011-08-16
2011-08-16
Barnie, Rexford (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Circuit interruption by thermal sensing
Reexamination Certificate
active
08000075
ABSTRACT:
A safety device for disabling a positive pressure radiant tube heater upon failure of the heat exchanger and a corresponding method are described. This invention relates to the ability to detect a condition where a failure of the heat exchanger triggers the safety device and disables the heater. The safety device includes a low melt wire; an insulating sleeve positioned about the low melt wire, the wire and sleeve positioned on top of the reflector, a tension device to maintain the wire under tension; and a control device to disable the heater if the wire is discontinuous.
REFERENCES:
patent: 2006810 (1935-07-01), Kunz
patent: 2253719 (1941-08-01), McMahon
patent: 2432145 (1947-12-01), Evans
patent: 3950746 (1976-04-01), Davies
patent: 7654257 (2010-02-01), Vancak
patent: 2006/0258121 (2006-11-01), Wu
patent: 2009/0056929 (2009-03-01), Mulder
patent: 08030336 (1996-02-01), None
Brice Martin
Saad Tharwat
Barnie Rexford
Clements Gregory N.
Clements Bernard PLLC
Gas-Fired Products, Inc.
Mai Tien
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