Self-leveling system

Road structure – process – or apparatus – Pavement – Vault cover-closure

Reexamination Certificate

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Details

C404S025000, C052S020000, C052S019000

Reexamination Certificate

active

07025529

ABSTRACT:
Existing street sewers consist of an immobile concrete structure supporting a frame. The present invention, the self-leveling street sewer, comprises a frame that floats on the foundation of the street and a tubular section that is connected to the connecting conduit. Since the frame is supported only by the street foundation, the immobile concrete structure is no longer required.

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