Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1981-08-06
1983-08-23
Callaghan, Thomas F.
Pipe joints or couplings
Nonmetal to metal
Internal member
285251, 285259, F16L 3322
Patent
active
044000219
ABSTRACT:
A reusable type hose end fitting comprising a through-bored stem portion and a ferrule portion which is removably screw-coupled to the stem portion. The stem portion has a first zone which is formed with a male screw thread and a second zone which locates within the bore of a hose. The ferrule portion has a first zone which is formed with a female thread for engagement with the male thread of the stem portion and a second zone which locates about the second zone of the stem portion to define a generally annular space in which an end portion of the hose locates when the fitting is assembled to the hose. The second zone of the stem portion is formed with four tapered regions and with cylindrical lands which separate adjacent ones of the tapered regions. The ferrule portion is formed in its second zone with three buttresses which are so disposed that, as the stem portion is advanced into the ferrule portion, a first one of the lands advances in an axial direction past all of the buttresses, a second one of the lands advances past two of the buttresses and a third one of the lands advances past one of the buttresses.
REFERENCES:
patent: 2219266 (1940-10-01), Hirsch
patent: 2476480 (1949-07-01), Burckle et al.
patent: 2685458 (1954-08-01), Shaw
patent: 2782059 (1957-02-01), Stranberg
patent: 2973975 (1961-03-01), Ramberg et al.
Callaghan Thomas F.
Frederick Duffield Pty. Limited
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