Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1989-05-01
1990-12-18
Arola, Dave W.
Pipe joints or couplings
Nonmetal to metal
Internal member
285319, 285921, F16L 3320
Patent
active
049781499
ABSTRACT:
A coupling for separably connecting one end portion of an elastic hose to a nipple at one end of a pipe has a sleeve with a circumferentially complete tubular section which is receivable in the end portion of the hose and can receive a portion of the nipple, and several substantially axially parallel elastic prongs which are engageable with an external retainer or with discrete external retainers of the nipple when the latter extends into the tubular section of the sleeve. A tubular clamping member is shrunk or otherwise applied around the end portion of the hose so that such end portion is clamped between the exterior of the tubular section and the clamping member. The entire tubular section and a portion at least of each prong is confined in the end portion of the hose when the latter is properly coupled to the nipple. This enables the hose to bias the prongs radially inwardly and to thus assist the innate elasticity of the prongs in engaging the external retainer or retainers of the nipple or to urge non-elastic prongs into such engagement. A sealing ring is inserted into an internal groove of the tubular section and sealingly engages the external surface of the nipple.
REFERENCES:
patent: 1253309 (1918-01-01), Ulleland
patent: 3603621 (1971-09-01), Parsons
patent: 3711125 (1973-01-01), Dehar
patent: 4486034 (1984-12-01), Sauer
patent: 4730856 (1988-03-01), Washizu
patent: 4753459 (1988-06-01), Potier
patent: 4775173 (1988-10-01), Sauer
Arola Dave W.
Kontler Peter K.
Rasmussen GmbH
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