Adjustable manhole cover assembly

Details Adjustable manhole cover assembly Adjustable manhole cover assembly

E - Fixed Constructions

02

D

E02D 29/14 (2006.01)

Patent

CA 2653849

An adjustable manhole cover frame assembly for mounting on a manhole basin upper section (12 ) has an outer ring (22) and an inner ring (20) engaging the outer ring by screw threads and supporting the manhole cover (10). The lower annular surface of the frame assembly rests on a convexly curved surface (36C) of a metallic adapter (36), which in turn rests on the generally flat surface ( 12A) of the manhole basin upper section (12); this allows the orientation of the frame assembly to be adjusted. Also, the frame assembly itself may have parts which allow its upper part to be adjusted for slope when the lower part of the frame assembly has been fixed. Another feature is a hinge mechanism (16) having a hinge arm (74) connecting two pivots (72,76), and having interlocking means (18) which prevent the hinge side of the cover from being raised when the cover is closed.

L'invention porte sur un ensemble châssis de couvercle de trou d'homme ajustable destiné à être monté sur la section supérieure (12) d'un compartiment de trou d'homme, lequel ensemble comprend un cercle extérieur (22) et un cercle intérieur (20) qui coopère avec le cercle extérieur via des filets de vis et qui soutient le couvercle de trou d'homme (10). La surface annulaire inférieure de l'ensemble châssis repose sur une surface incurvée convexe (36C) d'un adaptateur métallique (36), qui repose à son tour sur la surface généralement plate (12A) de la la section supérieure (12) du compartiment de trou d'homme, ce qui permet d'orienter l'ensemble châssis à ajuster. L'ensemble châssis lui-même peut comprendre des parties qui permettent de régler l'inclinaison de sa partie supérieure lorsque sa partie inférieure a été fixée. L'invention possède une autre caractéristique, à savoir un mécanisme de charnière (16) comprenant un bras d'articulation (74) relié à deux pivots (72, 76) et comprenant des moyens de verrouillage (18) qui empêchent le côté articulé du couvercle de se lever lorsque le couvercle est fermé.

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