Building blocks

Details Building blocks Building blocks

1993-11-15

1995-01-03

Hafer, Robert A.

Amusement devices: toys

Construction toy

Interfitting elements

446120, A63H 3308, A63H 3306

Patent

active

053781856

ABSTRACT:
A plurality of blocks, used for a block toy, each of which is formed by mutually connecting unit blocks selected from a first to a 25th unit block, the unit blocks being made by cutting an imaginary base block by four horizontal imaginary cutting planes parallel to each other and four vertical imaginally cutting planes parallel to each other in such a way that each unit block is designated the first to 25th unit block, respectively, arranged from left to right and from top to bottom. In order to build up a structure, a first and a second group of blocks are used in combination. That is, the blocks of the first group are structured by connecting a unit block or unit blocks selected from the 11th through 15th unit block to the unit blocks corresponding to the second, fourth, seventh through ninth, 17th through 19th, 22nd and 24th unit block, while the blocks of the second group are structured by connecting a unit block or unit blocks selected from the second through fourth unit block and/or the 22nd through 24th unit block to the unit blocks corresponding to the seventh through ninth, 12th, 14th, and 17th through 19th unit block.

REFERENCES:
patent: D169482 (1953-05-01), Henke et al.
patent: 614329 (1898-11-01), Lyle
patent: 2205404 (1946-06-01), Fuller
patent: 2278327 (1942-03-01), Magnus et al.
patent: 3838535 (1974-10-01), Larws
patent: 4007555 (1977-02-01), Sasaska
patent: 4381619 (1983-05-01), Griffin
patent: 4582496 (1986-04-01), Larws
patent: 4833856 (1989-05-01), Zwagerman
patent: 5215490 (1993-06-01), Szoradi

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