Rainwater gulley incorporating an electric heating element - an electric heating element prevents the water surface from freezing over thus reducing or preventing the run off of water
摘要
The rainwater gulley is inset into the ground and is covered by a grid (5) an collecting space is located under the grid. The heating element (7) is located circumferentially around the head of the exit pipe (3) and is insulated by a boundary layer (6) from the surroundings and is electrically (11) connected. USE/ADVANTAGE - Prevents icing up of rainwater drainage gulley.
申请公布号
DE4131772(A1)
申请公布日期
1993.03.25
申请号
DE19914131772
申请日期
1991.09.24
申请人
ERNST ZUERN UNTERNEHMEN FUER INTERNATIONALEN HANDEL, 8000 MUENCHEN, DE