Threaded fittings

Details Threaded fittings Threaded fittings

1994-07-01

1995-08-15

Reese, Randolph A.

Pipe joints or couplings

End to side or plate

Countersunk packed

285220, 2853322, 277168, F16L 4108

Patent

active

054413141

ABSTRACT:
An externally threaded fitting for use in coupling a fluid-conducting tube to a fluid-processing system threaded entrance opening is provided with a tapered-bottom groove immediately above and adjacent the fitting external thread, and with a doubly-tapered, polytetrafluoroethylene material seal element contained in the tapered-bottom groove. Upon proper installation in the system threaded entrance opening, the doubly-tapered seal element is fully isostatically compressed with total concealment of fitting external threads.

REFERENCES:
patent: 2246436 (1941-06-01), Downey
patent: 2342425 (1944-02-01), Parker
patent: 2759743 (1956-08-01), Bloom
patent: 3275348 (1966-09-01), Scott
patent: 3606358 (1971-09-01), Tobler
patent: 4531767 (1985-07-01), Andreolla
patent: 4595219 (1986-06-01), Lenze et al.
patent: 4770448 (1988-09-01), Strickland et al.
patent: 5188402 (1993-02-01), Colgate et al.

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