F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
122/147
F22B 37/64 (2006.01) F28F 9/013 (2006.01)
Patent
CA 1045483
ABSTRACT OF THE DISCLOSURE A supporting grid for pipes comprising a frame and a reticular structure made of different materials having different thermal expansions, wherein a manhole and associated cover are provided, wherein said cover is made with the same material as the reticular structure and is secured to it, and wherein one or more connections are provided between said cover and said frame for preventing only tangential movements relative to the frame, while one or more connections are provided for preventing only movements perpendi- cular to the grid surface, enabling all these connections free thermal expansion of said reticular structure and said cover relative to said frame.
248571
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