Lubricating device

Details Lubricating device Lubricating device

1981-08-18

1983-08-23

Purser, Ernest R.

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

384 93, 184 55A, E21B 1022

Patent

active

043998780

ABSTRACT:
A device for lubricating rotary drill bits of the type comprising a roller cutter (14) which is rotatably carried by means of a bearing system (15, 16, 17, 18). Fluid is supplied to the bearing system for cooling and/or cleaning thereof through a passage (31, 32, 33; 51, 61), and a lubricant is delivered to said passage from a body (31; 39) of porous material, which is soaked in lubricating means. For purposes of controlling the supply of lubricating means the porous member forms a fraction of the inner wall of said passage.

REFERENCES:
patent: 2515417 (1950-07-01), Myers
patent: 2767807 (1956-10-01), Booth
patent: 2831660 (1958-04-01), Smiecinski
patent: 4280571 (1981-07-01), Fuller

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