Patent ID: 7309114

Claim:
A cabinet comprising: a hollow housing having two sides and a bottom; multiple tracks attached respectively to the sides of the housing in parallel and arranged in pairs and each track comprising a securing rail securely attached to the housing and a sliding rail slidably mounted on the securing rail and having a top, a bottom, a guiding notch defined in the top and a locking hole defined through the bottom; multiple drawers mounted respectively between the sliding rails of corresponding pairs of the tracks; multiple wheels attached to the bottom of the housing; a safety device mounted in the housing and comprising an elongated fixed base longitudinally attached to one side of the housing; a moving base slidably mounted on the fixed base and having a hole defined through the moving base; multiple guiding blocks securely attached to the moving base and corresponding respectively to the tops of the sliding rails of the tracks on the side of the housing on which the safety device is mounted, and each guiding block having a bottom and an inclined face defined in the bottom; multiple locking blocks securely attached to the moving base and corresponding respectively to the bottoms of the sliding rails of the tracks on the side of the housing on which the safety device is mounted, and each locking block having a top and a locking tab formed on the top and selectively engaging with the locking hole in a corresponding sliding rail; multiple guiding brackets attached to the fixed base and corresponding respectively to the tracks on the side of the housing on which the safety device is mounted, and each guiding bracket having a guiding slot laterally defined through the guiding bracket; and multiple sliders slidably and respectively mounted on the guiding slots in the guiding brackets and each having a top abutting with the inclined face on a corresponding guiding block and a pin extending from the slider, slidably held in the guiding slot in a corresponding guiding bracket and engaging with the guiding notch in the sliding rail of a corresponding track; and a lock assembly attached to the housing, corresponding to the safety device and having a lock cylinder attached to the housing and having a locking bolt rotatably extending into the hole in the moving base.