Self-fastening sewer tap

Details Self-fastening sewer tap Self-fastening sewer tap

2006-06-13

2006-06-13

Bochna, David (Department: 3679)

Pipe joints or couplings

End to side or plate

Sput

C285S189000

Reexamination Certificate

active

07059638

ABSTRACT:
A self-fastening tap for connecting a branch pipe to an aperture of a given diameter provided in a main pipe. The tap comprises a hollow cylindrical body having a first open end of a given diameter and a second open end opposed to the first open end. The cylindrical body is sized to fit and seal the aperture provided in the main pipe. The first open end has an outer side provided with a flexible lip and an inner side provided with abutment means for abutting the branch pipe. The flexible lip has an outer diameter larger than the diameter of the first open end of the cylindrical body. The second open end has an outer side provided with an outer rim. The tap comprises removable at least one spacing ring slideably mounted around the cylindrical body, between the flexible lip and the outer rim.

REFERENCES:
patent: 3981061 (1976-09-01), Jackson et al.
patent: 4365829 (1982-12-01), Fowler
patent: 4735443 (1988-04-01), Rush et al.
patent: 5145216 (1992-09-01), Valls, Jr.
patent: 5551590 (1996-09-01), Mazur et al.
patent: 5971441 (1999-10-01), Ishikawa et al.
patent: 6089615 (2000-07-01), Jappinen
patent: 6508490 (2003-01-01), Hoffman

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