A pair of reinforcing ribs (50, 50) are formed on the bottom plate (33) of a box body (31) of an electrical component box (30). The reinforcing ribs (50, 50) have their respective pivot guides (50a, 50a) provided at their front ends to engage with associated pins (38b, 38b) on the safety cover (38)....http://www.google.com/patents/US8132425?utm_source=gb-gplus-sharePatent US8132425 - Electrical component box of container refrigeration system
