Outside drop for manhole
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 24, 2004
Grant Date -
N/A
app pub date -
Apr 23, 2003
filing date -
Apr 23, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A collar for supporting or protecting pipes on an outside drop adjacent a manhole is provided. A plurality of stacked collar sections can protect pipes comprising the outside drop. Alternatively a plurality of collar segments having a circular wall within can form the pipe integrally with the collar. The collars can protect riser pipe sections or elbow piper sections. The collars may be split for ease of installation around pipes and fastened together around the pipe. The collars are easily attached to the manhole by drilling a hole into the manhole at designated places and using bolts through tabs on the collars to hold the collar in place adjacent the manhole. The collars can have several different standard heights and be stacked to the desired height of the manhole. Pipes having riser sections or elbow sections can have protective collars.
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International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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