Plastic fillable manhole cover with penetrating handles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 23, 1992
Grant Date -
N/A
app pub date -
Jan 31, 1991
filing date -
Jan 31, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A manhole cover comprises a top having a top surface and an edge portion, a depending portion having a sidewall and a bottom surface, and an interior chamber. The manhole cover is fabricated from a first material, while the interior chamber is at least partially filled with a second material. The manhole cover preferably includes recessed handles which are recessed into the top and extend downwardly through the bottom surface. Cooperative engagement means in the form of inter-fitting indentations and protuberances are provided in the top surface and the bottom surface respectively. The bottom surface includes a first surface portion which includes a peripheral edge portion and a bracing portion. The bracing portion includes a plurality of brace members each of which have a lower brace surface and a brace sidewall.
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