Rock drill

Details Rock drill Rock drill

1989-04-21

1990-05-15

Dang, Hoang C.

Boring or penetrating the earth

With tool shaft detail

Helix or helically arranged structure

175394, 175395, 408226, 408230, E21B 1722, E21B 1044, E21B 1040

Patent

active

049249533

ABSTRACT:
A rock drill for rotary and/or percussive stress, in particular for use in percussion or hammer drilling machines, is proposed, which by its geometrical design makes improved efficiency and simplified production possible. For this purpose, the feed spiral 5 is designed alternately with horizontal feed sections 8,8' with a 0.degree. pitch, and adjoining lead sections 9,9', the respective feed sections assuming an angle of rotation of 90.degree. on the drilling tool.

REFERENCES:
patent: 2322894 (1943-06-01), Stevens
patent: 3190377 (1965-06-01), Rassieur
patent: 3749189 (1973-07-01), Boehm
patent: 4294319 (1981-10-01), Guergen
patent: 4549616 (1985-10-01), Rumpp et al.
patent: 4579180 (1986-04-01), Peetz et al.
patent: 4699226 (1987-10-01), Muller et al.

Affiliated with

Also associated with

Rating

Rock drill does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-615991