Pipe joints or couplings – Particular interface – Tapered
Reexamination Certificate
2006-02-28
2006-02-28
Dunwoody, Aaron (Department: 3679)
Pipe joints or couplings
Particular interface
Tapered
C285S903000, C285S123100, C285S924000
Reexamination Certificate
active
07004510
ABSTRACT:
An embodiment of the invention is a piping system including a fluid impermeable sleeve having a plurality of longitudinal, spaced ribs formed on an interior surface of the sleeve. A fluid carrying tubing is positioned internal to the sleeve. A coupling has a first end and a second end, the first end having interior threads engaging an outer surface of the sleeve. The coupling has a vent opening in fluid communication with the interior of the sleeve.
REFERENCES:
patent: 1793887 (1931-02-01), Newton
patent: 2113211 (1938-04-01), Lake
patent: 3506039 (1970-04-01), Marriott
patent: 3980112 (1976-09-01), Basham
patent: 5456502 (1995-10-01), Sharp
patent: 5713607 (1998-02-01), Webb
patent: 5969618 (1999-10-01), Redmond
patent: 6173995 (2001-01-01), Mau
patent: 6315003 (2001-11-01), Albino
patent: 6502866 (2003-01-01), Hujisawa et al.
Dunwoody Aaron
Omega Flex, Inc.
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