Corrosion-Resistant Self-Locking Manhole Cover

Corrosion-Resistant Self-Locking Manhole Cover

A corrosion-resistant self-locking manhole cover includes a cover plate adapted to rest on a manhole cover support surface of a manhole frame so as to be substantially flush with a top portion of the frame and a surrounding surface. An anchor on the cover plate, which may comprise nonmetallic corros...

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Hauptverfasser: NOLLE ERIC R, SULLIVAN JEFFREY R
Format: Patent
Sprache:eng
Schlagworte:
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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creator NOLLE ERIC R
SULLIVAN JEFFREY R
description A corrosion-resistant self-locking manhole cover includes a cover plate adapted to rest on a manhole cover support surface of a manhole frame so as to be substantially flush with a top portion of the frame and a surrounding surface. An anchor on the cover plate, which may comprise nonmetallic corrosion-resistant material, is adapted to engage the manhole frame at a first location in a manner that resists lifting of the cover plate proximate to such location. A locking member on the cover plate, which may also comprise nonmetallic corrosion-resistant material, is movable between a locked position and an unlocked position. In the locked position, the locking member is adapted to engage the manhole frame at a second location in a manner that resists lifting of the cover plate proximate to such location. In the unlocked position, the locking member is disengaged from the manhole frame.
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recordid cdi_epo_espacenet_US2015104253A1
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subjects EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
title Corrosion-Resistant Self-Locking Manhole Cover
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