Pipes and tubular conduits – Plural duct – Surrounding radially spaced duct with axially spaced...
Reexamination Certificate
2006-03-21
2006-03-21
Brinson, Patrick (Department: 3754)
Pipes and tubular conduits
Plural duct
Surrounding radially spaced duct with axially spaced...
C138S108000, C138S114000, C004S252400, C249S142000, C052S577000
Reexamination Certificate
active
07013927
ABSTRACT:
A protective sleeve system for use by plumbers during installation of riser pipes in buildings, surrounds a pipe and maintains a space around the pipe. A sleeve surrounds the pipe such that a space is defined between the pipe and the sleeve and a plurality of spacers disposed between the sleeve and the pipe, maintain the space between the pipe and the sleeve. The plurality of spacers are separate from the sleeve. An annular cover ring covers the annular space. In use, the protective sleeve system is installed prior to pouring the concrete floor. After pouring and setting of the concrete floor, the cover ring is removed, followed by the removal of the spacers. The sleeve is then cut to floor level and the pipe riser is cut down to a suitable level.
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Brinson Patrick
Shoemaker and Mattare
LandOfFree
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