Pipe coupling arrangement

Details Pipe coupling arrangement Pipe coupling arrangement

1978-01-16

1979-03-27

Callaghan, Thomas F.

Pipe joints or couplings

Essential catch

With manipulator

285305, 285369, F16L 2100

Patent

active

041462521

ABSTRACT:
A coupling sleeve surrounds two adjacent pipe ends to be coupled together. A continuously-converging, spiral-shaped channel is provided at opposite end regions of the sleeve. A continuously-converging spiral-shaped split constrictable member is located in and angularly movable through each channel. Actuating members in force-transmitting relationship with each trailing end region of a respective constrictable member are operative for angularly moving the latter through each channel, and for radially constricting each constrictable member about and in sealing engagement with the entire periphery of each respective pipe end. In the fully clamped position, each leading end region is overlapped by each respective trailing end region. The spiral-shaped channel is formed in one embodiment by spiral-shaped walls of the sleeve itself, or in another embodiment by a spiral-shaped insert which is received in a circular groove formed by circular-shaped walls of the sleeve.

REFERENCES:
patent: 2005174 (1935-06-01), Williams
patent: 3334929 (1967-08-01), Wiltse
patent: 3432189 (1969-03-01), Buller
patent: 3704034 (1972-11-01), Shire et al.

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