Pipe joints or couplings – With assembly means or feature – Guide and support
Patent
1988-01-21
1988-11-22
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Guide and support
285307, 285319, 285423, 285915, 285921, F16L 3500, F16L 3712
Patent
active
047860855
ABSTRACT:
A coupling device between a hose and the radiator of a motor vehicle has a nipple on the radiator with a circumferentially complete rib at its front end. The front flank of the rib is conical and the rear flank of the rib extends radially of the nipple and is adjacent a groove with three equidistant axially parallel ramps one of which is in line with a bridge extending forwardly of the conical flank. The end of the hose is attached to a coupling element with three equidistant prongs each having a radially inwardly extending claw at its front end. The claws slide along the conical flank of the rib when the front end of the coupling element is inserted into the front end of the nipple, and the claws ultimately enter into and are held in the groove. Each claw has two mutually inclined cam faces, the same as the bridge. If a claw hits the bridge during attachment of the coupling element to the nipple, the cam faces of the bridge and the cam faces of the abutting claw cooperate to turn the coupling element relative to the nipple so as to ensure that each claw can slide along the conical front flank of the rib on its way into the groove. The ramps have top lands between pairs of concave surfaces in the groove. In order to separate the coupling element from the nipple, the coupling element is turned so that the claws slide along the concave surfaces and reach the top lands of the ramps; such top lands are at the level of the radially outermost portion of the rib so that the coupling element can be pulled away from the nipple.
REFERENCES:
patent: 2684256 (1954-07-01), Krukowski
patent: 3588149 (1971-06-01), Demler
patent: 4214779 (1980-07-01), Losell
patent: 4708375 (1987-11-01), Sauer
patent: 4735440 (1988-04-01), Sauer
Heise Wilfried
Sauer Heinz
Arola Dave W.
Kontler Peter K.
Rasmussen GmbH
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