E - Fixed Constructions – 04 – D
Patent
E - Fixed Constructions
04
D
E04D 13/04 (2006.01)
Patent
CA 2139758
A device for ensuring free flow to roof rainwater outlets, especially on flat roofs, in connection with ice formation. The de- vice comprises a feed means (1) in the form of at least one channel member (2) extending outwards from a gully (4) and being provided with a plurality of side inlet openings (6) along its length, and a heating cable (11) arranged within the channel member (2) and which is arranged to be thermostatically connected within a chosen temperature interval, to melt ice which has formed around the gully (4). The temperature interval of the thermostat suitably is ca. 2 °C, and this interval preferably is displaceable within a chosen temperature range, e.g. between -5 °C and 0 °C. Alternatively, the thermostat records the surface temperature of the roof covering and connects the heating cable (11) when the temperature rises and passes 0 °C, whereafter the heating cable is switched off with a cycle timer so that it is switched on only in the period which is necessary for melting a hole in the ice barrier.
Johnsen Asle
Ridout & Maybee Llp
LandOfFree
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