Pipe joints or couplings – Essential catch – Pivoted
Patent
1983-01-26
1985-09-24
Callaghan, Thomas F.
Pipe joints or couplings
Essential catch
Pivoted
285423, 285DIG4, F16L 3900
Patent
active
045429227
ABSTRACT:
A fitting for connecting tubes which have circumferentially extending axially spaced ribs with recesses defined between the ribs comprises a socket member which advantageously has a cavity at one end of smaller diameter than a cavity at its opposite end which is adapted to receive the tube. The ledge is formed between the two cavities and a resilient member such as a sealing sleeve is disposed against the ledge at the inner end of the larger diameter cavity. The tube to be connected is positioned in the larger diameter cavity against the sealing sleeve such that its ribbed circumference underlies the slot in the larger diameter cavity which is closable by a locking fitting. The locking fitting includes an inner end which is adapted to be secured to the socket and which in one embodiment includes a bending strip which is affixed to the socket and supports the remaining portion of the locking lid at an acute angle with respect to the exterior surface of the socket. The locking lid at its opposite end includes a bevelled lip which is engageable under the interior surface of the opposite edge of the slot. The locking lid includes one or more projections or ribs at its interior surface which are spaced apart so that they each engage in a recess between the ribs of thetube. After the outer bevelled lip of the locking element is engaged beneath the surface of the edge of the socket member bounding the slot the tube is locked in position within the fitting.
REFERENCES:
patent: 1253309 (1918-01-01), Ulleland
patent: 3244437 (1966-04-01), Belicka et al.
patent: 3250551 (1966-05-01), Draudt
patent: 3602009 (1971-08-01), Powell
patent: 3694007 (1972-09-01), Crow et al.
patent: 4214779 (1980-07-01), Losell
patent: 4248459 (1981-02-01), Pate et al.
patent: 4441745 (1984-04-01), Nicholas
Agro Ag.
Callaghan Thomas F.
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