The invention relates to a manhole cover device with a support frame and manhole cover.
Also provided is a lock for a utility access, a manhole cover and a hinge arrangement for a manhole cover.
Between the filter and the lid of the street sink is arranged a space with lateral passages so that at filled filter or too poor percolation in this water can pass the filter on the outside.
Therefore, a damage of the manhole cover assembly can be decreased, and also a noise caused by traffic loading and impact is not occurred.
The present invention provides a manhole cover assembly having a locking means, so that a manhole cover can not be detached from a manhole frame, in case that a heavy weight vehicle passes thereon and a sewage flows backward.