Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash – Wall with plural portals
Patent
1994-08-16
1996-06-04
Nguyen, Kien T.
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
Wall with plural portals
52 64, 244114R, E06B 104
Patent
active
055221920
ABSTRACT:
A gate girder (5)is provided over the gateway opening of a hangar. To diminish the roof load and working load stressing the gate girder (5), it is supported by at least one girder support (1), which can be combined with a sliding gate plate (1'). On the lower and upper edges of girder support (1), rollers (9, 10) are provided, which are at equal distances from one another. To assure a uniform stress both of the upper support of gate girder (5) and of lower footing (6), in each case pairs of upper rollers (9) are mounted by levers (7) on supports (16), which are guided vertically movable in sliding gate panel (1'). In addition, a freely rotatable roller (15)is mounted on each support (16). A steel cable (18) wound around rollers (15), is placed over each roller (15), which in addition is guided by deflecting rollers (14) mounted freely rotatable on girder support (1), and is fixed with its ends (19) to the girder support (1). Thus, only forces of equal size can be accommodated by upper rollers (9), which are passed on by lower rollers (10), which are mounted by levers (7') on push rods (20), which are fastened to girder support (1), uniformly and only of equal size to footing (6).
REFERENCES:
patent: 1462302 (1923-07-01), Phillips
patent: 2320604 (1943-06-01), Jackson et al.
patent: 3169574 (1965-02-01), Behlen
patent: 3389514 (1968-06-01), Horvath
patent: 3739537 (1973-06-01), Barnes
patent: 4144685 (1979-03-01), Fox
Frantl Erich
Frantl Werner
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