Static structures (e.g. – buildings) – Lapped multiplanar surfacing; e.g. – shingle type – Interfitted sections
Patent
1979-08-27
1981-06-09
Perham, Alfred C.
Static structures (e.g., buildings)
Lapped multiplanar surfacing; e.g., shingle type
Interfitted sections
52520, 52553, E04D 3362, E04D 3363
Patent
active
042716535
ABSTRACT:
To ensure positive inter-engagement of the free edge of a male rib at one side of a roof or wall cladding sheet with an internal shoulder formed in, and longitudinally of, a female rib at one side of an identical sheet, the said free edge has a series of outwardly displaced abutments formed on it so that engagement between the two is confined to those points at which the abutments are placed.
REFERENCES:
patent: 2765887 (1958-10-01), Horowitz
patent: 3775922 (1973-12-01), Myers
patent: 3982373 (1976-09-01), Wilson et al.
John Lysaght (Australia) Limited
Perham Alfred C.
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