Pipe joints or couplings – Sleeve
Reexamination Certificate
2007-06-25
2010-12-14
Dunwoody, Aaron (Department: 3679)
Pipe joints or couplings
Sleeve
C285S383000
Reexamination Certificate
active
07850213
ABSTRACT:
A coupling to connect two pipes, and to connect pipe fittings and valves with pipes, which includes arcuates provided with inner flanges in their end portions, where said arcuates are positioned around crossable inner means, which means can also be used by different types of cylindrical couplings which couplings require grooves around cylindrical rings mounted around the end portions of pipes; where crossable inner means is comprised of a centrally located partitioner ring located between two pipes, which ring separates two gaskets provided with backup rings which backup rings are provided with radial circumferential grooves for the attachment of said arcuates bridging across said inner means. Said backup rings are attachable to the shoulders constructed around the end portions of two opposite pipes.
REFERENCES:
patent: 406397 (1889-07-01), Hampton
patent: 1430969 (1922-10-01), Fillis
patent: 1535294 (1925-04-01), Collins
patent: 1834968 (1931-12-01), Rector
patent: 2079949 (1937-05-01), Novati
patent: 3223439 (1965-12-01), Stevens
patent: 3438658 (1969-04-01), Stevens
patent: 2003/0025324 (2003-02-01), Guesnon et al.
patent: 2007/0085341 (2007-04-01), Walmsley et al.
patent: 2007/0257488 (2007-11-01), Jimenez
Dunwoody Aaron
Thorpe North & Western LLP
LandOfFree
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