Doubled-up pipe coupling

Details Doubled-up pipe coupling Doubled-up pipe coupling

2007-04-30

2008-11-25

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

Flange

Clamped

C285S332100, C285S334100, C285S368000

Reexamination Certificate

active

07455331

ABSTRACT:
A multipurpose coupling is made of two pieces incorporating a partitioning washer ring between them. The coupling is provided with a centrally located interlocking, doubled-up mechanical mechanism, comprised of two mechanisms, where each mechanism performs its intended function in sequence to connect the two pieces of the coupling body, and to secure the coupling to the ends of two pipes simultaneously. The first part of the doubled up mechanism includes two main radial flanges on the inner end of each piece of the coupling body which are held together face to face between secondary radial flanges by means of fasteners extending between the secondary radial flanges. The second part of the doubled up mechanism includes a cylindrical cover having intermittent inner radial shoulders which are interlockable upon rotation of the cylindrical cover with radial flange shoulders positioned intermittently around the main radial flanges. When the respective cover inner radial shoulders and flange shoulders are interlocked, the cover is locked in position to prevent rotation of the cover with respect to the main flanges and to hold the coupling body pieces in connected condition.

REFERENCES:
patent: 787791 (1905-04-01), Reynolds
patent: 1819086 (1931-08-01), Friend
patent: 1851574 (1932-03-01), Fiederlein
patent: 2014355 (1935-09-01), Hussman
patent: 2070291 (1937-02-01), McHugh
patent: 2146218 (1939-02-01), Kimmich et al.
patent: 2568414 (1951-09-01), Russ
patent: 5715857 (1998-02-01), Gill
patent: 5723814 (1998-03-01), Kolbl et al.
patent: 6302452 (2001-10-01), Schlicht
patent: 6672334 (2004-01-01), Gill
Straub Technical Manual, Jun. 2001, p. 4.

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