Drill bit lubricant circulation system

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – Rotation of bit actuates lubricant feed means

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

384 93, E21B 1024

Patent

active

043900720

ABSTRACT:
Discloses a lubricant circulating system for a rotary drilling bit including a lubricating space defined between a rotary cone cutter and a journal shaft extending from the bit body, the body defining a lubricant supply passageway connecting the lubricating space with a substantially cylindrical inlet chamber of a lubricant reservoir and with the centerline of the supply passageway being disposed substantially tangential with the cylindrical wall of said inlet chamber to form a restrictive vortex flow passage from the supply passageway into said reservoir and a nonrestrictive return flow passage, the body defining a lubricant exhaust passageway connecting the lubricating space through a substantially cylindrical outlet chamber into a discharge passageway forming part of the reservoir and with the centerline of the discharge passageway being disposed substantially tangential with the cylindrical wall of the outlet chamber to form a restrictive vortex flow passage from the reservoir into the outlet chamber and exhaust passageway and a non-restrictive return flow passage. Repeated volumetric variations in the lubricating space cause lubricant flow in the direction of least flow restriction which is from the reservoir into the inlet chamber, through the lubricating space and out of the discharge passage to the reservoir.

REFERENCES:
patent: 3841422 (1974-10-01), Crow
patent: 3990525 (1976-11-01), Penny
patent: 4183416 (1980-01-01), Walters
patent: 4284151 (1981-08-01), Levefelt

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Drill bit lubricant circulation system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill bit lubricant circulation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill bit lubricant circulation system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-929811

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.