Pipe joints or couplings – Packed – Wedge
Reexamination Certificate
2005-09-28
2010-06-15
Dunwoody, Aaron M (Department: 3679)
Pipe joints or couplings
Packed
Wedge
C285S272000
Reexamination Certificate
active
07735880
ABSTRACT:
The present invention relates to a quick joint coupling for liquid tight joining of lines under high pressure and comprising a sleeve shaped female part and a male part being introducible into the female part. A male part related to the female part comprises a cylindrical part being introducible into the female part of an envelope surface of which presents a first groove having a certain width. The first groove receives a ring being axially displaceable between the two walls of the groove, which the ring has substantially the same thickness as the depth of the first groove, and which the female part comprises a cylindrical space for receiving the cylindrical part of the male part. The envelope surface of the space is provided with at least a second groove for receiving elastically movable locking means out off and into the cylindrical part.
REFERENCES:
patent: 2812960 (1957-11-01), Walsh
patent: 4223919 (1980-09-01), Kurachi
patent: 4606564 (1986-08-01), Kurachi
patent: 6129390 (2000-10-01), Ohlsson
patent: 3546413 (1987-07-01), None
patent: 0375674 (1988-12-01), None
patent: 1070898 (2000-07-01), None
patent: 9635906 (1996-11-01), None
patent: WO02/097316 (2002-12-01), None
Dunwoody Aaron M
Gauthier & Connors LLP
Weo Hydraulic AB
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