Stackable block system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 19, 2000
Grant Date -
N/A
app pub date -
May 19, 1997
filing date -
Sep 29, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stacking block system includes a plurality of blocks, each having a top face and a plurality of side walls extending downwardly from the top face. At least one coupling knob extends upwardly from the top face and has a substantially spherical upper part and a substantially cylindrical lower part. A tubular coupler or flange extends downwardly from the top face and beyond the side walls is complementary to the coupling knob, enabling coupling of two blocks. The tubular flange guides the coupling knob to enable coupling of two blocks, even when the blocks are tilted with respect to each other.
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