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1. (US4967057) Snow melting heater mats
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Application Number: 07227109 Application Date: 02.08.1988
Publication Number: 4967057 Publication Date: 30.10.1990
Grant Number: 4967057 Grant Date: 30.10.1990
Publication Kind : A
IPC:
H05B 3/36
H05B 3/34
Applicants: BAYLESS RONALD E
HAVARD JAMES M
Inventors: Bayless Ronald E.
Havard James M.
Agents: Freudenberg Kenton L.
Freudenberg Maxwell C.
Priority Data:
Title: (EN) Snow melting heater mats
Abstract:
(EN)

Individual electrically heated mats, self-regulated by use of an electrical element whose resistance varies proportionately with its temperature, used for covering walking areas to prevent accumulation of snow and ice. Each mat is provided with male and female electrical connections on the ends of short power cords to permit any number of mats to be chained together in electrical parallel and to be used to cover, for example, a flight of stairs by positioning one mat on each stair.