Electric heating – Heating devices – With current connection and/or disconnection means
Patent
1980-09-29
1982-06-15
Reynolds, B. A.
Electric heating
Heating devices
With current connection and/or disconnection means
219507, 219508, 219512, 219213, 340580, 236 91R, H05B 102
Patent
active
043352995
ABSTRACT:
A thermostatic control for electric cables used on overhanging eaves of pitched roofs in northern climates, and in rain gutters and downspouts, comprises a high temperature-limit switch and a low temperature-limit switch connected in series circuit for controlling energization to a narrow temperature range extending from the freezing temperature of water to several degrees colder. Above-freezing temperatures will melt ice and snow without supplemental heating, and sufficiently colder temperatures will not be raised sufficiently by heat loss through a building roof to thaw ice and snow accumulation on the roof and provide run-off water to the unheated eave, rain gutter and downspout where freezing can occur and result in the formation of an ice dam which will block drainage of further run-off water and which may grow in size to cause water to back-up and seep under roofing shingles to leak through the roof.
REFERENCES:
patent: 2699484 (1955-01-01), Michaels
patent: 3233078 (1966-02-01), Siemianowski
patent: 3540655 (1970-11-01), Hinrichs
patent: 3582612 (1971-06-01), Siemianowski
patent: 3725638 (1973-04-01), Solin et al.
Paschall M.
Reynolds B. A.
Schoff Keith
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