Pipe joints or couplings – Temperature responsive joint element; e.g. – shrunk fit – Memory plastic element
Patent
1975-08-27
1981-10-27
Arola, Dave W.
Pipe joints or couplings
Temperature responsive joint element; e.g., shrunk fit
Memory plastic element
285397, 285417, 285422, F16L 2500
Patent
active
042969557
ABSTRACT:
Described herein are composite coupling devices, particularly useful for joining cylindrical substrates. The device comprises a tubular heat recoverable member referred to as a driver that acts upon a second member, usually a sleeve concentrically disposed within the driver, causing the latter to engage the substrate. According to the present invention, the driver has a discontinuous or non-closed cross-section perpendicular to the axis about which it recovers allowing a high percentage of recovery to be imparted to it.
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Arola Dave W.
Raychem Corporation
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