Press fitting

Details Press fitting Press fitting

2007-11-13

2007-11-13

Bochna, David (Department: 3679)

Pipe joints or couplings

Nonmetal to metal

Internal member

C285S242000

Reexamination Certificate

active

11136921

ABSTRACT:
A press fitting includes a pipe connector, a nipple, a check ring, a sealing ring, a pressure sleeve. The pressure sleeve is locked within the check ring, which has an inlet groove, a positioning annular groove connected with the inlet groove, and the positioning annular groove has larger internal diameter than that of the inlet groove. The pressure sleeve has an extension section on its end, and the dimension of the external diameter of the larger-diameter end of the extension section is between the dimension of the internal diameter of the inlet groove of the check ring and that of the internal diameter of the positioning annular groove of the check ring. The press fitting involves good coaxiality between the pressure sleeve and the check ring, good fixity of the pressure sleeve, and can be operated easily and utilized widely in industrial applications.

REFERENCES:
patent: 1129979 (1915-03-01), Hewitt et al.
patent: 2687904 (1954-08-01), Tornblom
patent: 4544187 (1985-10-01), Smith
patent: 6450549 (2002-09-01), Schutz
patent: 6598906 (2003-07-01), Brugmann
patent: 6874823 (2005-04-01), Viegener

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