Triple-expanded mechanical pipe coupling derived from a...

Details Triple-expanded mechanical pipe coupling derived from a... Triple-expanded mechanical pipe coupling derived from a...

2006-10-17

2006-10-17

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

Packed

Wedge

C285S374000, C285S179000

Reexamination Certificate

active

07121593

ABSTRACT:
A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and a first expanded region adjacent to the socket, a second expanded region adjacent to the first expanded region and a third expanded region adjacent to the second. A sealing member is positioned in the first expanded region, a retainer is positioned in the second expanded region and a support washer having transversely oriented radial and coaxial flanges is positioned adjacent to the retainer in the third expanded region. A lip turned inwardly on the second expanded region overlaps the radial flange and captures the support washer, retainer and sealing member within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling.

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U.S. Appl. No. 10/123,607, filed Apr. 16, 2002,entitled Mechanical Pipe Coupling Derived from a StandardFitting (Snyder Sr. et al); Publication Date: Dec. 12, 2002.

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