Building block having opposing male and female hinge elements fo

Details Building block having opposing male and female hinge elements fo Building block having opposing male and female hinge elements fo

1994-11-22

1995-10-17

Mancene, Gene

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Block or like manually manipulatable object having indicia...

446125, 446104, G09B 2500

Patent

active

054584957

ABSTRACT:
This invention relates to a building block in the shape of a right-angles isosceles triangular prism. the block has male hinge elements on one edge and female hinge elements on another edge such that two blocks can not only be hingedly attached but also joined at both respective hinge; element carrying edges to form a cube. Male and female face connection elements are provided to allow face to face connection.

REFERENCES:
patent: 137075 (1873-03-01), Harrington
patent: 3374917 (1968-03-01), Troy
patent: 3662486 (1972-05-01), Freedman
patent: 3774339 (1973-11-01), Swett
patent: 4195437 (1980-04-01), Ace
patent: 4606732 (1986-08-01), Lyman
patent: 4731041 (1988-03-01), Ziegler
patent: 4886477 (1989-12-01), Ziegler
patent: 4902259 (1990-02-01), Ziegler

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