Pipe joints or couplings – Packed – Screw thimble
Reexamination Certificate
2007-09-11
2007-09-11
Dunwoody, Aaron (Department: 3679)
Pipe joints or couplings
Packed
Screw thimble
C285S245000, C285S369000, C285S903000, C403S286000, C403S288000
Reexamination Certificate
active
10972265
ABSTRACT:
An apparatus for joining ends of a pair of ducts together in end-to-end relationship has a collar with a first end portion and a second end portion, a first coupler element translatably secured to an exterior of the collar for moving the first end portion between first and second positions, and a second coupler element translatably secured to the exterior of the collar so as to move the second end portion between first and second positions. The end portions have a plurality of fingers that are movable so as to be free of the surfaces of the duct when in the first position and which contact a rib of the duct when in the second position. The collar and the coupler elements form a liquid-tight seal over the respective ends of the pair of ducts.
REFERENCES:
patent: 2850299 (1958-09-01), Risley
patent: 3233925 (1966-02-01), Stevens
patent: 3813479 (1974-05-01), Olivero
patent: 3899198 (1975-08-01), Maroschak
patent: 3917324 (1975-11-01), Wakatsuki et al.
patent: 5320319 (1994-06-01), Winger et al.
patent: 5474335 (1995-12-01), Sorkin
patent: 5775849 (1998-07-01), Sorkin
patent: 5954373 (1999-09-01), Sorkin
Dunwoody Aaron
Egbert Law Offices
Kee Fannie C.
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