Pipe joints or couplings – With assembly means or feature – Handle or handwheel for rotary engagement
Patent
1995-02-28
1996-11-12
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Handle or handwheel for rotary engagement
285 93, 285239, 285305, 285397, 285276, F16L 3500
Patent
active
055732801
ABSTRACT:
A tubing end-piece interconnects a free end of a piece of tubing and a tubing connector or fitting so that a fluid can flow between the tubing and the fitting or connector. The tubing end-piece includes a body member extending along a longitudinal axis with a bore extending longitudinally therethrough. The body member has an elongated body portion, a doughnut-shaped head portion and a frustoconically-shaped tail portion. The body portion has an outer body surface configured in a shape of a frustum that tapers from a first end and towards a second end. The doughnut-shaped head portion is connected to the first end of said body portion and extends radially outwardly relative to the longitudinal axis to form in cross-section an outer curved surface commencing from the first end and terminating in an outer peripheral edge which defines a first opening into the bore. A frustoconically-shaped tail portion is connected to the second end of the body portion and tapers from the second end and towards a second opening into the bore. The body member has an inner first surface and an inner second surface defining the bore and has a plurality of splines which are spaced apart from one another and extend longitudinally along and outwardly from the outer body surface. The present invention also includes a connector adapted to interconnect a pair of tubing end-pieces so that the fluid can flow between and through the respective pieces of tubing and the pair of tubing connectors, and present a connection which resists snagging when trailed from a portable or fixed source of oxygen gas to an ambulatory patient.
REFERENCES:
patent: Re32482 (1987-08-01), Anderson
patent: 2071780 (1937-02-01), Aghnides
patent: 2071842 (1937-02-01), Kennedy
patent: 2085841 (1937-07-01), Weiss
patent: 3413017 (1968-11-01), Hughey
patent: 4443028 (1984-04-01), Hayes
patent: 4597594 (1986-07-01), Kalalieff
patent: 4635972 (1987-01-01), Lyall
patent: 4783099 (1988-11-01), Muser
Curti James N.
Kazal Duane D.
McGann Laurence
Salter Peter W.
Arola Dave W.
Salter Labs
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