Electric resistance heating devices – Heating devices – Radiant heater
Reexamination Certificate
2006-11-21
2006-11-21
Campbell, Thor S. (Department: 3742)
Electric resistance heating devices
Heating devices
Radiant heater
C219S213000, C392S435000
Reexamination Certificate
active
07139471
ABSTRACT:
An apparatus for removing snow and ice from a roof includes a plurality of heating panels fastened to a rooftop surface. Each heating panel is formed from water-impermeable material and includes top and bottom surfaces formed from heat-resistant material. A plurality of elongated thermal-conductive heating elements are sandwiched medially of the top and bottom surfaces. A control panel is electrically coupled to one of the heating panels and a power cord is electrically coupled to an external power supply source. The present invention further includes a mechanism for electrically coupling the heating panels to each other and a mechanism for removably attaching the heating panels to the roof. A thermal sensor is operably connected to the control panel and the heating panels for monitoring an operating temperature of the heating elements.
REFERENCES:
patent: 2546743 (1951-03-01), Harrison
patent: 2699484 (1955-01-01), Michaels
patent: 2844696 (1958-07-01), Custer, Jr.
patent: 3129316 (1964-04-01), Glass et al.
patent: 3521029 (1970-07-01), Toyooka et al.
patent: 4009743 (1977-03-01), Ackerman
patent: 4769526 (1988-09-01), Taouil
patent: 5387778 (1995-02-01), Stanger
patent: 5451743 (1995-09-01), du Preez
patent: 5813184 (1998-09-01), McKenna
patent: 5900178 (1999-05-01), Johnsen
patent: 6294768 (2001-09-01), Liebich
patent: 6348673 (2002-02-01), Winters
patent: 6653607 (2003-11-01), Ellis et al.
patent: 6727471 (2004-04-01), Evans et al.
patent: 3609782 (1987-06-01), None
patent: 46-26018 (1971-07-01), None
patent: 53-18237 (1978-02-01), None
patent: 2-118335 (1990-05-01), None
patent: 02/034094 (2002-05-01), None
LandOfFree
Apparatus for removing snow/ice from a roof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for removing snow/ice from a roof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for removing snow/ice from a roof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3647033