US 5,350,079 AGranted

Safety cover assembly for open container

AssigneeSafety-Kleen Corporation

InventorsDouglas A. Larson, Thomas J. Danowski, Roy Voss

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Abstract

A safety cover assembly for use with an associated storage drum. The assembly includes a drum insert with a collar having a two-part cover assembly disposed atop the collar. The moveable part of the cover assembly is actuated by one portion of a crank mechanism, the other portion of which includes a pair of ends secured to a treadle and riser assembly. In use, pushing down on the treadle lowers the one portion of the crank mechanism, and raising the other portion and the associated cover. The treadle and riser assembly is open at the rear to facilitate removal and replacement of the drum. The moveable cover part may be secured to the crank by a fusible link for fire protection.

Claims11

Dependent claims

A safety cover assembly for use with an associated drum unit comprising, in combination, a drum insert portion having a collar element defining an opening for receiving materials to be stored and disposed of, said collar element being generally congruent and dimensioned to fit within an upper margin of said associated drum, said collar having a top flange portion which extends radially outwardly to position said collar in relation to said drum;

a cover assembly having a fixed cover element extending chordwise across a portion of said opening, a movable cover panel extending substantially across the remainder of said opening, and a hinge pivotally connecting said fixed cover element to said movable cover panel along a hinge axis;
a lift frame assembly having a generally horizontally extending treadle portion, a pair of risers extending upwardly toward said cover assembly, and a crank mechanism having a pair of elements engaging the upper ends of said risers and another element secured to said movable panel, whereby a downward movement of said treadle portion will cause said movable cover panel to pivot about said hinge axis and raise said movable cover panel so as to provide access to the interior of said drum.

Dependencies are inferred from the claim text.