Pipe joints or couplings – Elbow
Patent
1992-08-14
1994-01-04
Arola, Dave W.
Pipe joints or couplings
Elbow
285243, 285322, 285423, 285249, F16L 2506
Patent
active
052754472
ABSTRACT:
A base member has an elongate bore, a base end, a distal end, an elongate inner sleeve extending from the base end to the distal end, a generally frusto-conical outer surface having a larger diameter adjacent to the base end and a reduced diameter at the distal end, and a radially extending flange attached to the base end of the inner sleeve. The outer surface of the inner sleeve has axially spaced protrusions positioned along its length. An outer sleeve extends around the inner sleeve, has an annular base portion positioned axially adjacent to the flange, and a plurality of finger portions attached to the base portion and distributed in mutually opposing relationship circumferentially about the inner sleeve and extending from adjacent to the base end of the inner sleeve to the distal end of the inner sleeve. The finger portions are movable radially relative to the inner sleeve and have frusto-conical inner surfaces generally conforming to the outer surface of the inner sleeve. The outer sleeve has a distal end adjacent to the distal end of the inner sleeve that is sufficiently radially flexible to allow a hose end to be inserted on the inner sleeve. The inner surface of the finger portions also has axially spaced protrusions that are axially offset relative to the protrusions of the inner sleeve. The protrusions of the outer sleeve are urged between the protrusions of the inner sleeve when the distal end of the outer sleeve is urged toward the distal end of the inner sleeve. The outer sleeve further has an outer surface that is threaded axially. The base of the inner sleeve has a groove that receives a lip on the base end of the outer sleeve for anchoring the outer sleeve axially relative to the inner sleeve. A clamping nut is mounted on the outer sleeve and has an inner bore that is matingly threaded with the outer surface of the outer sleeve, for urging the finger portions toward the inner sleeve when a hose end is positioned on the inner sleeve, thereby clamping the hose end to the inner sleeve.
REFERENCES:
patent: 1509802 (1924-09-01), Weigand
patent: 2253691 (1941-08-01), Darling
patent: 3361449 (1968-01-01), Parro
Arola Dave W.
Dehlinger Peter J.
Misti Maid Inc.
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