Pipe coupling

Details Pipe coupling Pipe coupling

1981-07-07

1984-03-27

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Particular tool-engaging means or with tool

285373, 285383, 285244, F16L 3500

Patent

active

044389523

ABSTRACT:
A quickly-attachable pipe coupling comprises a flexible tube having an internal diameter approximately equal to the outer diameter of the pipe to be coupled, and a cylindrical spring overlying the flexible tube. The cylindrical spring includes a closely-wound coil of flat spring material having more than one turn, and having an inner diameter in its relaxed condition less than the outer diameter of the flexible tube. The coil spring is partially uncoilable under stress to open by increasing its inner diameter at least to the outer diameter of the flexible tube. Thus, the flexible tube and the cylindrical spring thereover, when in its stressed open condition, may be applied over the end of the pipe to be coupled, whereupon the cylindrical spring may be relaxed to close and to cause it to compress the flexible tube into tight engagement with the pipe for the complete length of the coil spring.

REFERENCES:
patent: 590094 (1897-09-01), Duncan
patent: 2880017 (1959-03-01), Anderson et al.
patent: 2980143 (1961-04-01), Harris
patent: 4280722 (1981-07-01), Guptil et al.
patent: 4295669 (1981-10-01), La Prade

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