Pipe joints or couplings – Packed – Sleeve
Reexamination Certificate
2007-03-19
2008-12-16
Dunwoody, Aaron M (Department: 3679)
Pipe joints or couplings
Packed
Sleeve
C285S015000, C285S067000, C285S197000, C285S325000, C285S921000
Reexamination Certificate
active
07464971
ABSTRACT:
Pipe fittings, used in joining abutting ends of two pipe sections, comprise a pair of semi-cylindrical members that are adapted to fit around and engage the periphery of opposed ends of the two abutting ends of the pipe sections. Longitudinal edges of the two semi-cylindrical members are formed so as to mate with one another to form a mechanical means of locking the semi-cylindrical members together in tight engagement with the ends of the pipes. Each of the semicylindrical members has a seal mechanism formed of a resilient, elastomeric material which forms a mechanical, water-tight seal between the mutually respective pair of semi-cylindrical members as well as the opposite ends of the pipes to which the pair of semi-cylindrical members have been attached.
REFERENCES:
patent: 518805 (1894-04-01), Cooper
patent: 3151631 (1964-10-01), Yano
patent: 3423111 (1969-01-01), Elsner
patent: 3771820 (1973-11-01), Hoss et al.
patent: 3857588 (1974-12-01), Curtin
patent: 3971574 (1976-07-01), Curtin
patent: 4103943 (1978-08-01), Curtin
patent: 4109944 (1978-08-01), Curtin
patent: 4111234 (1978-09-01), Wells et al.
patent: 4429907 (1984-02-01), Timmons
patent: 5480193 (1996-01-01), Echols et al.
patent: 5853030 (1998-12-01), Walding
Crellin Terry M.
Dunwoody Aaron M
Kee Fannie
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