Pipe seal assembly for poured concrete on-site waste disposal system components
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United States of America Patent
Stats
-
Aug 28, 1990
Issued Date -
N/A
app pub date -
Nov 23, 1988
filing date -
May 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe seal assembly for a poured concrete tank or box in an on-site waste disposal system including a seal member having an inclined inner wiper flange which releasably retains a mandrel, and plug means also releasably mounted within the seal member to prevent ingress of liquid concrete during box formation. A spacer member is provided for those instances where the seal member is to be installed in the wall of a relatively thick-walled concrete box. Alternate means for releasably retaining the seal member to the mandrel are disclosed. Additionally, a series of such seal assemblies is disclosed for use in sealably attaching a pipe through a thick poured concrete wall, such as a basement wall.
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Cited Art Landscape
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