Method of boring holes which are open at both ends in the ground

Details Method of boring holes which are open at both ends in the ground Method of boring holes which are open at both ends in the ground

1979-05-09

1981-02-10

Novosad, Stephen J.

Boring or penetrating the earth

Enlargement of existing pilot throughbore requiring...

175 19, 175 62, 405184, E21B 726, E21B 728

Patent

active

042496209

ABSTRACT:
A method of boring holes in the ground, which holes are open at both ends, includes forming an open-ended pilot bore by means of a first self-propelled displacement hammer of smaller diameter. Next a cable is introduced through the pilot bore and then the diameter of the pilot bore is increased to form the hole by means of a second displacement hammer of greater diameter. The second displacement hammer is guided through the pilot bore by pulling it with the cable which for this purpose is attached to the leading end of the second hammer.

REFERENCES:
patent: 2074003 (1937-03-01), Templeton et al.
patent: 2349033 (1944-05-01), Elliott
patent: 2746719 (1956-05-01), Seligman
patent: 2837324 (1958-06-01), Aschacker
patent: 3232360 (1966-02-01), Dickinson
patent: 3396807 (1968-08-01), Menton
patent: 3486572 (1969-12-01), Hamilton et al.
patent: 3905431 (1975-09-01), Hasewend
patent: 4117895 (1978-10-01), Ward et al.

Affiliated with

Also associated with

Rating

Method of boring holes which are open at both ends in the ground does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of boring holes which are open at both ends in the ground, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of boring holes which are open at both ends in the ground will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1661698