Electric resistance heating devices – Heating devices – Concentrated heated air stream
Reexamination Certificate
2007-06-12
2007-06-12
Campbell, Thor S. (Department: 3742)
Electric resistance heating devices
Heating devices
Concentrated heated air stream
C392S360000, C219S213000
Reexamination Certificate
active
11176541
ABSTRACT:
A system for removing snow and ice from a surface that includes a fan and a heating element contained within a hollow cavity open at one end, and a hollow duct positioned above the hollow cavity. The hollow duct is open at both ends; one end is positioned directly above the open end of the hollow cavity, while the other end leads back into the hollow cavity through a hole on the other side of the heating element contained therein. The fan blows air past the heating element and out the open end of the hollow cavity. The heated air melts any snow or ice with which it comes into contact. At least some of the heated air that does not contact any snow or ice is drawn into and through the hollow duct, and back into the hollow cavity where it may be reused.
REFERENCES:
patent: 2476543 (1949-07-01), Geissler et al.
patent: 2779856 (1957-01-01), Fahner
patent: 2820450 (1958-01-01), Zimmerman
patent: 3174477 (1965-03-01), Wilson
patent: 3311104 (1967-03-01), Wollner et al.
patent: 3411174 (1968-11-01), Jordan
patent: 3524044 (1970-08-01), Liardi
patent: 3603507 (1971-09-01), Devlin
patent: 3964183 (1976-06-01), Mouat
patent: 4033055 (1977-07-01), Lazarecky
patent: 4918844 (1990-04-01), Marsh
patent: 5140762 (1992-08-01), Monson
patent: 5146695 (1992-09-01), Yang
patent: 5189756 (1993-03-01), Sprunger
patent: 5282264 (1994-01-01), Reeves et al.
patent: 5867926 (1999-02-01), Schmitt
patent: 5948299 (1999-09-01), Scalia
patent: 2002/0069560 (2002-06-01), Smith
patent: 2613066 (1977-09-01), None
patent: 2376028 (1978-09-01), None
patent: 987946 (1965-03-01), None
Campbell Thor S.
Kaliko Scott H.
Kaliko & Yeager
LandOfFree
System for removing snow and ice from a surface does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for removing snow and ice from a surface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for removing snow and ice from a surface will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3879441