Pipes and tubular conduits – With closures and plugs
Reexamination Certificate
2007-01-16
2007-01-16
Brinson, Patrick (Department: 3754)
Pipes and tubular conduits
With closures and plugs
C138S090000, C138S09600T, C138S109000, C285S008000, C285S910000
Reexamination Certificate
active
11134934
ABSTRACT:
A multipurpose plumbing tool has a body at one end, a head at an opposite end and an intermediate neck portion connecting the body and head. The marginal end portion of the body is cut back to form a reduced section, a shoulder being formed at the junction of the reduced section and a non-reduced section of the body. The reduced section is internally and externally threaded. An inwardly tapered seat for an O-ring is formed in the shoulder. An O-ring positioned in the tapered seat is compressed and contained within the tapered seat to provide a water tight seal when the externally threaded end is threaded into a female fitting. The free end of the head is formed with an internally threaded socket. A washer seated at the bottom of the socket provides a water tight seal when the socket is screwed onto a male plumbing fitting.
REFERENCES:
patent: 3164361 (1965-01-01), Pruett
patent: 3606399 (1971-09-01), Zahuranec
patent: 4005735 (1977-02-01), Miyamoto
patent: 4688830 (1987-08-01), Meisinger et al.
patent: 4716938 (1988-01-01), Weh et al.
patent: 5104151 (1992-04-01), Adams
patent: 6276399 (2001-08-01), Fox
Abraham Mark
Atkinson Manuel Diaz
Bello Herbert L.
Brinson Patrick
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