Manhole cover safety apparatus
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United States of America Patent
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May 29, 2018
Issued Date -
N/A
app pub date -
Sep 15, 2016
filing date -
Sep 25, 2015
priority date (Note) -
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Abstract
Embodiments of a manhole cover safety apparatus having a circular base defining a central opening and a flange that extends outwardly from the circular base. An expandable cover is in rotatable engagement with the flange through a plurality of frame members that are secured to a cover portion which is operable between a deployed position wherein the cover portion covers at least a portion of the circular opening to provide a visual and physical warning of an uncovered manhole and a retracted position wherein the cover portion does not cover the central opening.
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