E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
E02D 29/14 (2006.01) B65D 90/10 (2006.01)
Patent
CA 2229417
A manhole cover and frame assembly includes an outer frame (12) having a support surface (14) and a side wall (16) that extends from the support surface and has a recessed portion (18). An inner frame (20) is supportable on the support surface. The inner frame has a protrusion (24) extending from the outer peripheral surface. The inner frame also includes an adjustable joint (26) for adjusting the inner frame in its peripheral dimensions to expand to engage the protrusion with the recessed portion, thereby preventing upward movement of the inner frame, and to contract to remove the protrusion from the recessed portion. The inner frame also includes a cover support surface (28). A manhole cover is supportable on the cover surface.
Un couvercle de regard et un assemblage formant un bâti comportent une ossature extérieure (12) pourvue d'une surface de soutien (14) ainsi qu'une paroi latérale (16) partant de la surface de soutien et pourvue d'une partie en creux (18). Une ossature intérieure (20), pouvant s'appuyer sur la surface de soutien, comporte un saillant (24) partant de la surface périphérique extérieure. Elle comporte également un joint ajustable (26) permettant l'ajustement de ses dimensions périphériques, d'une part dans le sens d'un élargissement pour que le saillant puisse venir au contact de la partie en creux, lui interdisant de ce fait un déplacement vers le haut et, d'autre part dans le sens d'un rétrécissement pour dégager le saillant de la partie en creux. L'ossature intérieure comporte également une surface de couverture de soutien (28) sur laquelle peut s'appuyer un couvercle de regard.
Bowman Harold M.
Gowling Lafleur Henderson Llp
LandOfFree
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