Pipe joints or couplings – With means blocking release of holding means – Lock nut or washer
Patent
1993-12-06
1995-02-14
Arola, Dave W.
Pipe joints or couplings
With means blocking release of holding means
Lock nut or washer
285 92, 285175, 285340, 285179, F16L 1508
Patent
active
053888650
ABSTRACT:
A vent piping coupler for coupling vent piping to a threaded vent outlet of a pressure regulator or other venting device to vent the device vent outlet to a remote location. A coupler body with a first threaded section for threadably mounting into the vent outlet, a locking ring with projecting tabs to grip into the vent outlet, and a lock nut threadably mounts to a second threaded section on the coupler body which includes a slot. The lock ring has an anti-rotation tab engaged in the slot to lock the coupler body in position on the vent outlet when the lock nut is tightened. A grip ring with inwardly angled teeth is crimp mounted at the other coupler body end to insertably receive a vent piping which is locked in position by the angled teeth. Respective O-rings may be used to seal the coupler body to the vent outlet and to the vent piping.
REFERENCES:
patent: 4030798 (1977-06-01), Paoli
patent: 4062574 (1977-12-01), Scholin
patent: 4084843 (1978-04-01), Gassert
patent: 4927188 (1990-05-01), Sands
Drawing of Vent Extender, Bryan Donkin Company, Canada, 1992.
Arola Dave W.
Fisher Controls International Inc.
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