Cast flange for pipe couplings

Details Cast flange for pipe couplings Cast flange for pipe couplings

2007-02-15

2009-12-01

Bochna, David E (Department: 3679)

Pipe joints or couplings

Clamp

C285S367000, C285S369000

Reexamination Certificate

active

07625018

ABSTRACT:
An end clamp housing for attachment to a cylindrical body, the side end housing being a unitary metal casting comprising; an open annular base element provided with a first, ingoing flange at a first side of the base element and a second ingoing flange at a second side of the base element. The second ingoing flange having a cross-section forming a loop extending outwardly beyond the base element; and a pair of clamp members projecting outwardly from the base element. The clamp members being positioned face to face and having an aperture to allow the insertion of a tightening element which can be operated to reduce the distance between the two ends of the open annular base element and thereby press an annular seal element against the outside of a pipe inserted through the seal clamp housing, which after release of the tightening element returns to its original dimensions.

REFERENCES:
patent: 3680894 (1972-08-01), Young
patent: 4463975 (1984-08-01), McCord
patent: 4494780 (1985-01-01), Burnett
patent: 5230537 (1993-07-01), Newman
patent: 5692544 (1997-12-01), Friedrich et al.
patent: 5941576 (1999-08-01), Krausz
patent: 6293556 (2001-09-01), Krausz
patent: 7243955 (2007-07-01), Krausz et al.
patent: 2001/0008149 (2001-07-01), D'Auria
patent: 2004/0108010 (2004-06-01), Gaston et al.
patent: 2004/0118467 (2004-06-01), Pirart
Office Action of IL Application No. 175971 mailed on May 24, 2009.

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