One piece molded roof for a vehicle cab

Details One piece molded roof for a vehicle cab One piece molded roof for a vehicle cab

B - Operations, Transporting

62

D

B62D 25/06 (2006.01) B60H 1/00 (2006.01) B62D 29/04 (2006.01) B62D 33/06 (2006.01)

Patent

CA 2328019

A one piece rotational molded roof for a vehicle cab is provided in which separate inlet and outlet air ducts are molded in the roof. The ducts are formed by molding upper and lower panels that are widely spaced to form the ducts and which are closely spaced about the periphery of the ducts. After a solid surface layer is molded, a second resin charge containing a foaming agent is dropped in the mold. This resin coats interior of the solid surface layer and later foams. The foam expands and extends completely between the closely spaced upper and lower panels of the solid surface layer to seal between the inlet and outlet air ducts. The foam is rigid to strengthen the roof.

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