Large shaft over-reamer apparatus and method

Details Large shaft over-reamer apparatus and method Large shaft over-reamer apparatus and method

1993-04-09

1994-11-22

Britts, Ramon S.

Boring or penetrating the earth

Enlargement of existing pilot throughbore requiring...

175344, 175406, 175 57, E21D 100

Patent

active

053660293

ABSTRACT:
A large shaft over-reamer apparatus and method using a driver means and a detachable reamer cutter means. The driver means may include a work platform for personnel to work on. The driver means is positioned in a drilled pilot hole for stability and vertical control. The top of the driver means is attached to a kelly bar that transmits rotational force to the driver. The driver means has lug pins to releasably connect the driver means to the reamer cutter means. Releasably connecting the driver means to the reamer cutter means allows the reamer cutter means to be left inside the shaft or hole while the kelly bar lifts out excavated material in a bucket attached to the driver means. The reamer cutter has radial cutters and wiper blades. The wiper blades help funnel the excavated materials to a bucket.

REFERENCES:
patent: 3638740 (1972-02-01), Justman
patent: 3659660 (1972-05-01), Conn
patent: 3805901 (1974-04-01), Coski
patent: 4244433 (1981-01-01), Kellner
patent: 4258805 (1981-03-01), Saxman
patent: 4274496 (1981-06-01), Liljekvist et al.
patent: 4359114 (1982-11-01), Miller et al.
patent: 4386670 (1983-06-01), Westermark

Affiliated with

Also associated with

Rating

Large shaft over-reamer apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Large shaft over-reamer apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large shaft over-reamer apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1985420