Leveler interlocking blocks

Details Leveler interlocking blocks Leveler interlocking blocks

2006-05-09

2006-05-09

Wilson, Lee D. (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Inclined plane lifter

Reexamination Certificate

active

07040603

ABSTRACT:
The present invention is a set of at least three interlocking blocks where two of the blocks are set on a ground surface and are connected at their top surfaces by a particular configuration of the underside of the third block. Four square and raised parts with four key recesses are formed on the top side of the entirely plastic and unitarily molded block to mate with a cavity and four flanged posts on the underside of another identical block. The critical part of this invention is providing four key recesses in the raised part of the block into which interlock the flanged posts of the underside of the block.

REFERENCES:
patent: 4819910 (1989-04-01), Johnston
patent: 5458315 (1995-10-01), Blatz et al.
patent: 5863026 (1999-01-01), Gano et al.
patent: D426933 (2000-06-01), Redfern
patent: 6135420 (2000-10-01), Johnston et al.
patent: 2003/0146422 (2003-08-01), Funk et al.

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