Dry pneumatic system for hard rock shaft drilling

Details Dry pneumatic system for hard rock shaft drilling Dry pneumatic system for hard rock shaft drilling

1991-06-19

1992-06-30

Trettel, Michael F.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

2851331, 2851332, 285272, F16L 4100

Patent

active

051256924

ABSTRACT:
A dry, vertical shaft drilling system including an inverted raiseboring cutterhead fitted with air nozzles and vacuum pickups. Weights are detachably stacked above the cutterhead. Cuttings are extracted through the weights into a swivel circumscribing the drill string. The swivel is a transition from the rotating cutterhead to the stationary extraction riser pipes disposed above the swivel. Non-rotating stabilizers stabilize the drill string.

REFERENCES:
patent: 1650788 (1927-11-01), Daughs
patent: 1925091 (1933-09-01), Crossen, Jr.
patent: 2817951 (1957-12-01), Turner
patent: 4285408 (1981-08-01), Franks, Jr.
patent: 4306741 (1981-12-01), Foulen
patent: 4516633 (1986-05-01), Richardson et al.
patent: 4534426 (1985-08-01), Hooper

Affiliated with

Also associated with

Rating

Dry pneumatic system for hard rock shaft drilling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dry pneumatic system for hard rock shaft drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dry pneumatic system for hard rock shaft drilling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1858758