Railways – Elevated structure
Patent
1981-10-09
1984-12-25
Reese, Randolph
Railways
Elevated structure
14 3, 14 14, 104107, 403205, 403237, E01B 2522
Patent
active
044896590
ABSTRACT:
A girder for supporting a movable body has a truss structure of a cross-sectional shape forming an isosceles triangle with a horizontal base. The truss structure is formed of three main tubes of a circular cross section that are located in positions corresponding to respective corners of the triangle and extend continuously over the length of the girder. A plurality of branch tubes of circular cross section are fixed at their ends to respective pairs of the main tubes by joint pieces, such that three branch tubes lie in a plane extending through the respective joint pieces perpendicular to the longitudinal axes of the main tubes so as to form the isosceles triangle. A rail support is secured to each main tube of the base of the isosceles triangle at a position disposed upwardly and outwardly of the center thereof, and a rail, along which the movable body is traversable, is supported on each rail support.
REFERENCES:
patent: 382407 (1888-05-01), Boyer
patent: 476982 (1892-06-01), Davis
patent: 889223 (1908-06-01), Graham
patent: 1306225 (1919-06-01), Humphrey
patent: 2855617 (1958-10-01), Broms et al.
patent: 3055484 (1962-09-01), Hubert
patent: 3706285 (1972-12-01), Gynt et al.
A.P.C. Application of Thofehrn et al., Ser. No. 291,581, Published 4-27-1943.
Higaki Hiroshi
Imamura Minoru
Kamohara Hideaki
Makino Kazuhiro
Nomura Hiroshi
Hitachi , Ltd.
Reese Randolph
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