Manhole frame

Manhole frame

A manhole frame comprises an annular-walled ring for supporting a cover or grate near its upper edge and a mechanically compressible resilient layer (3) shaped to conform to the wall of the annular ring and disposed in the space between the outer wall of the annular ring and the ground or similar st...

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1. Verfasser: FRANCIS LEBARON
Format: Patent
Sprache:eng
Schlagworte:
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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creator FRANCIS LEBARON
description A manhole frame comprises an annular-walled ring for supporting a cover or grate near its upper edge and a mechanically compressible resilient layer (3) shaped to conform to the wall of the annular ring and disposed in the space between the outer wall of the annular ring and the ground or similar structure when the annular ring is vertically displaced.
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subjects EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
title Manhole frame
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