Quick assembly and knock-down box and oil recycling kit using same

Claim 1

An oil changing and recycling kit comprising a quick assembly and knock-down box comprising, in the assembled condition, first, second, third and fourth generally rectangular side walls each having a pair of spaced substantially parallel end edges and a pair of spaced substantially parallel top end bottom edges, adjacent side walls being connected to each other at associated end edges, said first and third side walls having substantially the same dimensions, and said second and fourth side walls having substantially the same dimensions, said side walls being arranged to define a generally rectangular space defined by spaced parallel first and third side walls which are substantially normal to spaced parallel second and fourth side walls; a bottom wall formed by first, second, third and fourth bottom panels connected to associated ones of said bottom edges of said first, second, third and fourth side walls, respectively, said first and third bottom panels having substantially the same dimensions and said second and third bottom panels having substantially the same dimensions, said second and fourth bottom panels each having a connecting panel portion movable out of the planes of respective second and fourth bottom panels along weakened lines, said second bottom panel connecting panel portion being fixedly joined to said first bottom panel and said fourth bottom panel connecting panel portion being fixedly joined to said third bottom panel, said top edges of said side walls defining an opening into said rectangular space, and said bottom panels being configured to form a substantially closed bottom wall in the assembled condition and to retract between said side walls in a collapsed condition of the box wherein each one of two pairs of two adjacent side walls are disposed in one of two proximate parallel planes to form a substantially co-planar assembly in the knock-down condition of the box; an inside bag for lining the interior of the box and providing a liquid seal to insure that oil received within said rectangular space is retained within said inside bag; and a baffle means within said rectangular space to limit liquid movements or sloshing within said box.