Earth boring auger

Details Earth boring auger Earth boring auger

E - Fixed Constructions

21

B

255/67

E21B 25/02 (2006.01)

Patent

CA 1134343

ABSTRACT In a hollow stem auger for earth boring of the kind having spring loaded valve members at the bottom of the stem to permit the passage of test implements such as corers and vane test implements, the auger bit is constructed with a cage formation enclosing the valve member and supporting a bottom ring carrying cutting teeth. Interference of the valve members with a test implement is prevented by using an uncoupleable cylindrical sleeve surrounding the implement which sleeve can be lodged between the valve members to hold them open during use of the implement.

359122

Affiliated with

Also associated with

Rating

Earth boring auger does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Earth boring auger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth boring auger will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-728658