Education and demonstration – Means for demonstrating apparatus – product – or surface... – Block or like manually manipulatable object having indicia...
Patent
1989-12-18
1991-03-05
Apley, Richard J.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Block or like manually manipulatable object having indicia...
446119, 446487, A63H 3300
Patent
active
049973754
ABSTRACT:
Elastic cord interconnected blocks in which each block contains a plurality of deep slots cut to a centrally positioned interior washer-like connecting element having a hole coaxial that can freely pass the elastic cord. The element hole is coaxial with an axial hole formed in the block by the spacing of adjacent block segments, the segment having a spacing for passing a stretched elastic cord and for locking the cord in its relaxed state. Unusual shapes can be formed with several interconnected blocks.
REFERENCES:
patent: 1201710 (1916-10-01), Finch
patent: 2825178 (1958-03-01), Hawkins
patent: 3222072 (1965-12-01), Dreyer
patent: 3514893 (1970-06-01), Paksy
patent: 3577673 (1971-05-01), Monestier
patent: 3597872 (1971-08-01), Vennola et al.
patent: 4305582 (1981-12-01), Barton
patent: 4466799 (1984-08-01), Argiro
Playthings, "Tacoma Toy Firm Begins National Distribution of New Building Toy", May 1960, p. 75.
Apley Richard J.
Castle Linval B.
Healey Rachel M.
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