Double shield fitting

Pipe joints or couplings – Pipe to discreet nipple or sleeve to plate – Ball and socket

Patent

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Details

285177, 285323, 285348, 285423, F16L 2104

Patent

active

048711969

ABSTRACT:
A fitting arrangement where a fitting body has a collar portion for accommodating an end of an inner plastic tube. The collar portion defines a tapered seat which cooperates with a tapered ferrule which surrounds the tube and which abuts a tapered gripping sleeve which also surrounds the tube. An intermediate one-piece annular member has a nut part which externally threads onto the collar portion, and also has an interior conical seat which wedgingly cooperates with the gripping sleeve to wedgingly hold the ferrule and gripping sleeve between the opposed seats to radially compress them against the inner tube. This intermediate member also has a collar part projecting axially thereof for surrounding the end of a concentric outer tube. An annular nut surrounds the outer tube and is externally threaded onto the collar part. The collar part and nut define opposed truncated conical seats which cooperate with truncated conical surfaces defined on gripping and ferrule rings which externally surround the outer tube, whereby these latter rings radially compressed into sealing engagement with the outer tube.

REFERENCES:
patent: 2268263 (1941-12-01), Newell et al.
patent: 3375025 (1968-03-01), Engel
patent: 3612577 (1971-10-01), Pope
patent: 3980112 (1976-09-01), Basham
patent: 4107452 (1978-08-01), Razvi

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