Static molds – In situ construction engineering type or building type-mold... – Forming road – side walk – or curb in situ
Patent
1988-06-15
1989-04-25
Woo, Jay H.
Static molds
In situ construction engineering type or building type-mold...
Forming road, side walk, or curb in situ
249 4, 249 6, 249 18, 249157, 249159, E01C 1950
Patent
active
048240680
ABSTRACT:
A flexible form for making street and sidewalk curbs uses C-channels such as is utilized in straight portions of street curbs, said C-channels carrying "V" openings spaced regularly evey 6 inches or so, to facilitate gradual bending, such opening being equipped with a U shaped spring which resists the bending and, at the same time, causes a uniform tension along the length of the curve. The V openings are located both in the straight interior part of the curve and in the slanted external part of the curve. The external part of the curve has other V slots vertically placed in the web and spaced one every 5 feet for a curve radius of 12 feet, such V slots correcting the vertical camber of an inclined bent form. The flexible form, once spring balanced, allows the casting of concrete in a continuous fashion.
REFERENCES:
patent: 965979 (1910-08-01), Young
patent: 1140776 (1915-05-01), Teters
patent: 1644584 (1927-10-01), Heltzel
patent: 1770518 (1930-07-01), Harrold
patent: 1939007 (1933-02-01), Heltzel
patent: 3288426 (1966-11-01), Simpson
patent: 3385552 (1968-05-01), Von Drasek et al.
patent: 4340200 (1982-07-01), Stegmeier
patent: 4679763 (1987-07-01), Brotherton
Housel James C.
Woo Jay H.
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