Pipe joints or couplings – With fluid pressure seal – Flexible lip
Patent
1981-01-19
1983-08-09
Arola, Dave W.
Pipe joints or couplings
With fluid pressure seal
Flexible lip
285 4, 285369, 285404, F16L 1702
Patent
active
043974856
ABSTRACT:
A threadless pipe fitting of the "stab-in" type wherein a fluid tight connection between a cylindrical conduit and fitting is achieved merely by inserting the fitting upon the conduit end. An annular elastomeric seal within a groove defined in the fitting conduit receiving bore engages the conduit outer surface in a combination compression and lip seal manner wherein both elastomeric compression forces and fluid pressure forces maintain a sealing engagement between the seal and conduit. Additionally, set screw means radially threaded into the fitting mechanically maintain the conduit and fitting assembly, and the set screw includes torque limiting means for preventing excessive radial forces, and the nose of the set screw means is shaped to provide maximum frictional engagement with the conduit with minimal radial force.
REFERENCES:
patent: 1982441 (1934-11-01), Loweke
patent: 3123367 (1964-03-01), Brummer et al.
patent: 3137509 (1964-06-01), Kazienko
patent: 3601419 (1971-08-01), Fern
patent: 3684317 (1972-08-01), Kazienko
patent: 3879067 (1975-04-01), Keyser
patent: 4073514 (1978-02-01), Pate
patent: 4157195 (1979-06-01), Costanzo
patent: 4165892 (1979-08-01), Piatek
Plate I of 2/4/76-Pipe fitting manufactured by Michigan Hanger Company, Inc. of Hubbard, Ohio.
Aeroquip Corporation
Arola Dave W.
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