Steven Wayne Shelton

US Patent:

49519140, Aug 28, 1990

Filed:

Nov 23, 1988

Appl. No.:

7/276220

Inventors:

Theodore W. Meyers - Inverness IL
Steven R. Shelton - Provo UT

Assignee:

Tuf-Tite, Inc. - Barrington IL

International Classification:

E02D 2916

US Classification:

249 11

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.