Static structures (e.g. – buildings) – Module or panel having discrete edgewise or face-to-face... – Having integral key
Patent
1979-03-07
1981-06-16
Bell, J. Karl
Static structures (e.g., buildings)
Module or panel having discrete edgewise or face-to-face...
Having integral key
E04B 218
Patent
active
042729408
ABSTRACT:
A molded cement building block having horizontal and vertical pairs of tongue over groove configurations for interlocking with horizontally and vertically adjacent, similarly shaped blocks. The block is formed with two identically shaped side members integrally formed with a central member. A centrally disposed tongue extends longitudinally above the top surfaces of the side elements to form the vertical tongue and is recessed with respect to the bottom surfaces of the side members to form the vertical groove. The horizontal tongue and groove which interlock with adjacent blocks in a course are formed by the central member projecting at one end beyond the ends of the side members and being recessed with respect to the other ends of the side members to form respectively male and female ends in each block. The sides of both the horizontal and vertical tongue and grooves are mutually inclined to be self-guiding when the tongues are inserted into their associated grooves during the assembly of a structure with the blocks. A channel is formed along the top surface of the central member and openings are provided vertically through the central member for receiving horizontal and vertical reinforcing means, respectively.
REFERENCES:
patent: 919272 (1909-04-01), White
patent: 3968615 (1976-07-01), Ivany
patent: 4075808 (1978-02-01), Pearlman
patent: 4115980 (1978-09-01), Martel et al.
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