Door frame construction

Details Door frame construction Door frame construction

1983-01-17

1985-01-22

Raduazo, Henry E.

Static structures (e.g., buildings)

Elongated rigid structure

Baluster type

52826, 52823, E04C 234

Patent

active

044943547

ABSTRACT:
A door frame is fabricated of rolled sheet metal vertical frame pieces each including a first channel for receiving the end portions of wood or metal horizontal crosspieces and a second channel for receiving the end portions of corrugated or other panel members, the latter channel being formed by rolling a portion of the sheet metal back on itself to provide a double walled strength portion.

REFERENCES:
patent: 2423199 (1947-07-01), Milnor
patent: 2755895 (1956-07-01), Walterman
patent: 3450426 (1969-06-01), Kellems
patent: 3700385 (1972-10-01), Sherwood
patent: 3838548 (1974-10-01), Tanner
patent: 3925875 (1975-12-01), Doke
patent: 4182080 (1980-01-01), Naylor

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