Tapered joint thread system

Details Tapered joint thread system Tapered joint thread system

1995-09-22

1996-12-03

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Thread-cutting means

285 94, 285174, 285333, F16L 3500

Patent

active

055801013

ABSTRACT:
The invention presented is a tapered joint thread system, especially for use in a fluid handling device, and a fluid handling device containing the inventive tapered joint thread system. More particularly, the invention presented includes a plastic female end segment having an opening sized to receive a male fitting, and having a first tapered segment which tapers from a first internal diameter to a second internal diameter, and which is gauged from the opening of the female end segment to a controlled depth; the female end segment also has an unthreaded non-tapering segment having the second internal diameter which extends from the controlled depth to a second controlled depth, and an angled shoulder which tapers from the second internal diameter to a third internal diameter and which extends from the second depth to a third controlled depth.

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patent: 4643467 (1987-02-01), Wood
patent: 4893658 (1990-01-01), Kimura et al.
patent: 5015014 (1991-05-01), Sweeney
patent: 5106130 (1992-04-01), Ellsworth et al.
patent: 5169179 (1992-12-01), Teal

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