Amusement devices: toys – Construction toy – Interfitting elements
Patent
1987-09-15
1989-02-28
Hafer, Robert A.
Amusement devices: toys
Construction toy
Interfitting elements
446122, 446128, A63H 3308, A63H 3312
Patent
active
048081400
ABSTRACT:
A toy building block includes a rectangular parallelpipedic body with a pair of dovetail-shaped slots extending transversely across the center of four adjacent sides thereof, and a lug extending outwardly from the center of the slots on two of the sides, the portion of the lug projecting outwardly beyond the plane of the side of the block also having a dovetail cross section for sliding engagement with the slots, and the central portion of each lug being bifurcated, the sides of the central portion flexing inwardly to permit insertion of the lug into a slot and bearing against the sides of the slot to releasably lock the lug in the slot.
REFERENCES:
patent: 3391824 (1968-07-01), Wiseman
patent: 3456413 (1969-07-01), Fischer
patent: 3558138 (1971-01-01), Lemelson
patent: 3791090 (1974-02-01), Kniefel
patent: 4035947 (1977-07-01), Burge
patent: 4345762 (1982-08-01), Lebelson
patent: 4423465 (1983-12-01), Teng-Ching et al.
Hafer Robert A.
Idee International R & D Inc.
Muir D. Neal
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