Deformable pipe coupling having multiple radii of curvature

Details Deformable pipe coupling having multiple radii of curvature Deformable pipe coupling having multiple radii of curvature

2006-06-07

2010-06-01

Stodola, Daniel P (Department: 3679)

Pipe joints or couplings

Clamp

C285S411000, C285S367000, C285S364000

Reexamination Certificate

active

07726703

ABSTRACT:
A pipe coupling for joining pipe elements end-to-end is disclosed. The pipe coupling is formed of segments attached to one another circumferentially straddling the pipe elements. The segments are formed from sub-sections connected to one another end-to-end. Each sub-section has a surface region disposed to engage the outer surfaces of the pipe elements. Each surface region has a different radius of curvature from a surface region on a neighboring sub-section. The radii are selected so that when the coupling segments are deformed around the pipe elements, portions of surface regions of selected sub-sections contact the pipe elements, while portions of surface regions of those sub-sections between the selected portions remain in spaced relation away from the pipe elements. A constant and minimal torque is required to bolt the segments together as a result.

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“Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration” dated Jul. 18, 2008 (11 pages).

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