Raise boring head and stem assembly method

Details Raise boring head and stem assembly method Raise boring head and stem assembly method

1991-05-22

1993-04-06

Britts, Ramon S.

Boring or penetrating the earth

Enlargement of existing pilot throughbore requiring...

1753256, 299 33, 299 55, E21D 300

Patent

active

051995107

ABSTRACT:
An improved method for assembling a stem within a mating, close fitting hole of a raise boring head by attaching an overhead beam to the body of the raise boring bit, supporting the stem with its longitudinal axis aligned with that of the beam and that of the mating hole, and moving the stem along its axis to assemble the stem in the mating hole. A coating of wear resistant material on selected regions of the stem employs a softer material than that of the stem or the mating hole to minimize damage to the hole during assembly.

REFERENCES:
patent: 2846093 (1958-08-01), Densmore
patent: 3198087 (1965-08-01), Potts et al.
patent: 3792787 (1974-02-01), Maloney
patent: 3828862 (1974-08-01), Debell et al.
patent: 3983949 (1976-10-01), Pozniko
patent: 4011019 (1977-03-01), McDonald et al.
patent: 4069878 (1978-01-01), Chitwood et al.
patent: 4069878 (1978-01-01), Chitwood et al.
patent: 4089100 (1978-05-01), Berry, Jr.
patent: 4114322 (1978-09-01), Greenspan
patent: 4179000 (1979-12-01), Mitchell et al.
patent: 4228863 (1980-10-01), Liljekvist et al.
patent: 4228863 (1980-10-01), Liljekvist et al.
patent: 4422228 (1983-12-01), Chapman et al.
patent: 4832135 (1989-05-01), Walk et al.
patent: 5060405 (1991-10-01), Siffrin et al.
Reed Mining Tools, Inc. Technical Bulletin, Assembling and Disassembling the Taper Lok Raise Boring Head.

Affiliated with

Also associated with

Rating

Raise boring head and stem assembly 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 Raise boring head and stem assembly method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raise boring head and stem assembly method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-529788