Manhole cover frames
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United States of America Patent
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Jun 23, 1998
Issued Date -
N/A
app pub date -
May 8, 1996
filing date -
Sep 24, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spacer arrangement is provided for use in raising the height of a manhole cover frame, including one or more base spacer elements and one or more upper side extension elements; said one or more base spacer elements are adapted to be located within said manhole cover frame with said one or more side extension elements extending upwardly relative thereto; the spacer arrangement is adapted to receive a manhole cover; at least an underside surface of said one or more base spacer elements includes downwardly directed projections for stabilizing at least said one or more base spacer elements.
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