Water separator and backflow valve

Details Water separator and backflow valve Water separator and backflow valve

1982-08-23

1984-07-03

Purser, Ernest R.

Boring or penetrating the earth

With means movable relative to tool or shaft to control...

Valve prevents upward flow

175337, E21B 1018, E21B 4100

Patent

active

044573847

ABSTRACT:
A backflow control system for use in a gas circulation roller cone rock bit is disclosed wherein a single unit combination liquid-separator and positive action poppet check valve is used to restrict the entrance of water into roller cone bearings during drilling and to restrict the ingestion of detritus into the bearings and into the bit chamber during drilling interruptions. A quick-change mounting permits easy transfer of the valve unit form bit to bit.

REFERENCES:
patent: 2804281 (1957-08-01), Osburn
patent: 3029881 (1962-04-01), Swart
patent: 3048230 (1962-08-01), Angel
patent: 3089551 (1963-05-01), Greene
patent: 3198269 (1965-08-01), Nickles
patent: 3401758 (1968-09-01), Talbert
patent: 3788408 (1974-01-01), Dysart
patent: 3924695 (1975-12-01), Kennedy
patent: 4184554 (1980-01-01), Levefelt
patent: 4391328 (1983-07-01), Aumann

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