E - Fixed Constructions – 03 – F
Patent
E - Fixed Constructions
03
F
E03F 5/06 (2006.01) E01C 11/22 (2006.01) E01C 19/50 (2006.01) E03F 3/04 (2006.01) E04F 19/10 (2006.01)
Patent
CA 2173752
A trench cover assembly (10) in- cludes a cover member (12), a pair of opposed support members (14a, 14b) and means associated with said support mem- bers (14a, 14b) for holding said cover mem- ber (12) against vertical movement. The cover member (12) is formed with rabbets (34) along the top outer edge of opposing sides thereof. The support members (14a, 14b) are substantially C-shaped in cross section to provide a retaining area within which the cover member (12) is held against removal. The cover member (12) is slid into the end of the C-shaped support mem- bers (14a, 14b) to its functional position. The cover member (12) is secured against removal by closing the ends of the support members (14a, 14b). The upper horizon- tal leg (18a, 18b) of the C-shaped support members (14a, 14b) prevents the grate (12) from being lifted away. In an alternate embodiment, the upper horizontal leg (18a, 18b) of one of the support members (14a, 14b) includes a gap of length greater than the longitudinal length of the cover member (12). During assembly, the cover member (12) is passed through the gap and posi- tioned to rest within the retaining areas of the support members (14a, 14b). A flat bar is then welded to the upper horizontal leg (18a, 18b) to eliminate the gap. In another alternate embodiment, one of the support members (14a, 14b) is formed as an angle iron. A vertical post is fixedly attached to a vertical rail of the angle iron. A horizontal plate is removably attached to the vertical post to overlie the horizontal rail of the angle iron and form an upper horizontal leg to secure the cover member (12) against lifting,
Un ensemble couverture de tranchée (10) comprend une couverture (12), une paire de supports opposés (14a, 14b) et des moyens associés à ces derniers pour empêcher cette couverture (12) de se déplacer verticalement. Cette couverture est dotée de feuillures (34) le long de l'arête supérieure externe de ses côtés opposés. Les supports (14a, 14b) présentent une section transversale en C pour constituer une zone de retenue dans laquelle la couverture (12) est assujettie. Cette couverture est glissée dans l'extrémité des supports en C (14a, 14b) jusqu'à ce qu'elle adopte sa position fonctionnelle, puis assujettie par obturation des extrémités des supports (14a, 14b). Le segment horizontal supérieur (18a, 18b) des supports en C (14a, 14b) empêche le soulèvement de la grille (12). Dans une autre variante, le segment horizontal supérieur (18a, 18b) d'un des supports (14a, 14b) comprend un espace dont la longueur dépasse celle de la couverture (12). Pendant le montage, on fait passer la couverture par cet espace avant de la placer de façon à ce qu'elle repose dans les zones de retenue des supports (14a, 14b). Une barre plate est alors soudée au segment horizontal supérieur (18a, 18b), ce qui ferme cet espace. Dans une autre variante, un des supports (14a, 14b) prend la forme d'une équerre. Un pilier vertical est fixé au rail vertical de cette équerre. Une plaque horizontale est fixée amovible à ce pilier vertical de façon qu'elle recouvre le rail horizontal de l'équerre et constitue un segment horizontal pour empêcher le soulèvement de la couverture (12).
Blake Cassels & Graydon Llp
L. & S. Enterprises Inc.
LandOfFree
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