Static structures (e.g. – buildings) – Window or window sash – sill – mullion – or glazing – Decorative grill attached to sash
Patent
1986-02-25
1987-01-06
Perham, Alfred C.
Static structures (e.g., buildings)
Window or window sash, sill, mullion, or glazing
Decorative grill attached to sash
52284, 52286, 52570, 52594, E06B 100, E04B 104, E04C 110
Patent
active
046336303
ABSTRACT:
A system of structural blocks comprised of longitudinally extending members having vertical inner and outer faces. The basic structural blocks have webs centered on and projecting away from the inner faces of the blocks and extending from top to bottom of the blocks along one-half their longitudinal extent. Tongue and groove projections and recesses on the inner faces and on the webs mate with corresponding projections and recesses on identical blocks, whereby a plurality of such blocks may be longitudinally, transversely and vertically interlocked together. Corner, jamb, pilaster, beam, junction and web blocks are provided, together with a corresponding series of half height blocks, to interlock with the basic blocks and with each other so as to enable construction of a wide variety of buildings or structures.
REFERENCES:
patent: 932157 (1909-08-01), Matthews
patent: 1356590 (1920-10-01), Baumann
patent: 1493811 (1924-05-01), Frewen
patent: 2610503 (1952-09-01), Hall
patent: 3247633 (1966-04-01), Schultz et al.
patent: 3305982 (1967-02-01), Steele
patent: 3557505 (1971-01-01), Kaul
patent: 3618279 (1971-11-01), Sease
patent: 3888060 (1975-06-01), Haener
G. R. Block Research and Development Corporation
Perham Alfred C.
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