Pipe coupling

Details Pipe coupling Pipe coupling

2005-05-17

2005-05-17

Nicholson, Eric K. (Department: 3679)

Pipe joints or couplings

With fluid pressure seal

With separate, encased pipe-gripping means

C285S305000, C285S309000, C285S310000

Reexamination Certificate

active

06893051

ABSTRACT:
Disclosed is a pipe coupling, which can connect pipes in a sealed condition. The pipe coupling includes: a connector body having pipe locking jaws having the same diameter as the inner diameter of a pipe inserted into the pipe coupling, and a taper part gradually reducing the inside space toward a free end of the pipe coupling and opened at a portion of the outer circumference in which a snap ring insertion hole is formed; a packing member inserted and mounted at the lower end of the taper part; a jaw coupling inserted and mounted into the taper part, and having a number of coupling holes for coupling fixing jaws and a seating hole formed in the upper portion thereof; a snap ring located in the seating hole of the jaw coupling, the outer circumference of the snap ring being compressed and inserted into the snap ring insertion hole, both ends of the snap ring being bended in a separated condition and exposed to the outside; and an elastic member interposed between the packing member and the jaw coupling.

REFERENCES:
patent: 3727952 (1973-04-01), Richardson
patent: 3884508 (1975-05-01), Jones
patent: 4540201 (1985-09-01), Richardson
patent: 5090741 (1992-02-01), Yokomatsu et al.
patent: 5181751 (1993-01-01), Kitamura
patent: 5284369 (1994-02-01), Kitamura
patent: 5551735 (1996-09-01), Takayanagi et al.
patent: 5580100 (1996-12-01), Umezawa et al.
patent: 5711550 (1998-01-01), Brandt
patent: 5887911 (1999-03-01), Kargula
patent: 6435161 (2002-08-01), Kato

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