Pipe joint for connection of corrugated tube

Details Pipe joint for connection of corrugated tube Pipe joint for connection of corrugated tube

1994-09-30

1995-08-15

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

With holding means functioning only during transportation...

285 93, 285322, 285353, 285903, F16L 3500, F16L 5500

Patent

active

054413125

ABSTRACT:
A pipe joint for connecting a flexible corrugated tube includes a joint body, a sleeve received in an axial through bore in the joint body for holding a free end of the flexible corrugated tube, and a nut threadedly fitted in a threaded portion of the joint body. A shoulder is formed on an inner surface of the through bore, and has an air-tight surface directed toward one end of the through bore. A tapering surface, decreasing in diameter progressively toward the shoulder, is formed on the inner surface of the through bore in adjacent relation to the shoulder. An annular groove of a generally channel-shaped cross-section is formed in the inner surface of the through bore in adjacent relation to the tapering surface. The sleeve has projections extending radially inwardly from one end thereof facing said shoulder, the sleeve having an end surface at the other end thereof. The projections are pivotally movable resiliently relative to the remainder of the sleeve so as to be received in a predetermined one of valleys in the outer peripheral surface of the corrugated tube. The nut has a holding portion for holding outer surfaces of the projections of the sleeve in registry with the annular groove. The nut has a flange surface for abutment against the end surface of the sleeve.

REFERENCES:
patent: 4630850 (1986-12-01), Saka
patent: 4801158 (1989-01-01), Gomi
patent: 4904002 (1990-02-01), Sasa et al.
patent: 4907830 (1990-03-01), Sasa et al.
patent: 5080405 (1992-01-01), Sasa et al.
patent: 5261707 (1993-11-01), Kotake et al.
patent: 5292156 (1994-03-01), Sasa et al.

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