Interlocking building block

Details Interlocking building block Interlocking building block

1977-08-04

1978-11-28

Perham, Alfred C.

Static structures (e.g., buildings)

Opaque stonelike module

Lateral retaining feature on facing sheet

52593, E04B 256, E04C 104

Patent

active

041269799

ABSTRACT:
The building block includes upper and lower sides having longitudinally extending rib and groove respectively, interfitting with the groove and rib of a compatibly formed block. The rib and groove include laterally spaced faces inclined in the same general direction and interconnected by a transverse flat face. One of the inclined faces of the rib and of the groove is provided with a stepped shoulder, the stepped shoulder of the rib face engaging the stepped shoulder of the groove face of a compatible block to preclude relative movement of the said inclined rib and groove faces having the stepped shoulders tending to separate the rib and groove.

REFERENCES:
patent: 3427774 (1969-02-01), Curtis
patent: 3608258 (1971-09-01), Spratt
patent: 3795079 (1974-03-01), Klem
patent: 3936989 (1976-02-01), Hancock

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