Static structures (e.g. – buildings) – Machine or implement
Patent
1974-11-19
1976-05-04
Purser, Ernest R.
Static structures (e.g., buildings)
Machine or implement
52414, E04B 114, E04C 500
Patent
active
039539547
ABSTRACT:
A metal U-channel shaped element for reinforcing floor joists in building floors made of concrete and light material filling blocks, such as tiles, is made of a continuous metal section with a substantially U-shaped cross-section. The legs of the channel are symmetrically bent inwards so that the cross-section has rather the sahpe of an isosceles trapezoid and their free ends are also bent on itself in an overlapping relationship thus forming two upper stringers having a resisting moment not less than that of the channel bottom. Rigid U-shaped stiffening members are also provided in a spaced apart relationship, being fixed to the upper stringers and channel bottom.
REFERENCES:
patent: 947514 (1910-01-01), Stevens
patent: 1064163 (1913-06-01), Pement et al.
patent: 2194536 (1940-03-01), White
patent: 2233291 (1941-02-01), Leebov
patent: 2775019 (1956-12-01), Bemis
patent: 3828505 (1974-08-01), Leone
French Addition 73,318, 6-1960, 6 pp. of Dwg., 7 pp. of spec., 2nd Add. to Fr. 1,162,523.
Purser Ernest R.
Ridgill, Jr. James L.
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