Rock drill

Details Rock drill Rock drill

2011-03-29

2011-03-29

Neuder, William P (Department: 3672)

Boring or penetrating the earth

With tool shaft detail

Helix or helically arranged structure

C175S415000, C418S224000

Reexamination Certificate

active

07913777

ABSTRACT:
The invention relates to a rock drill (1) for rotational and percussive action, comprising a drill head (2), a conveying helix (3), a clamping shank and a longitudinal drill axis (L), wherein the drill head (2) has at least one secondary cutting element (5a,5b) with a front and a rear side face (10a,10b) and wherein the secondary cutting element (5a,5b) has a center of mass (M) and a cutting edge (11), the center of mass (M) and the cutting edge (11) defining a first plane (E1), the front side face (10a) of the secondary cutting element (5a,5b) defining a second plane (E2) and the rear side face (10b) of the secondary cutting element (5a,5b) defining a third plane (E3). In this arrangement, the longitudinal drill axis (L) intersects the first plane (E1) at a first point of intersection (S1), the longitudinal drill axis (L) intersects the second plane (E2) and/or the third plane (E3) at a second and/or third point of intersection (S2, S3), the longitudinal drill axis (L) and the first plane (E1) form a first acute angle (1) in the direction of advancement (x) of the rock drill (1) and the longitudinal drill axis (L) and the second and/or third plane (E2, E3) form a second and/or third acute angle (2, 3) in the direction of advancement (x) of the rock drill (1).

REFERENCES:
patent: 4185708 (1980-01-01), Pawlik et al.
patent: 6588519 (2003-07-01), Knoller
patent: 6868924 (2005-03-01), Haussmann et al.
patent: 2002/0046885 (2002-04-01), Eichhorn et al.
patent: 2005/0084352 (2005-04-01), Borschert et al.
patent: 27 35 855 (1978-03-01), None
patent: 36 26 523 (1988-02-01), None
patent: 100 53 344 (2002-05-01), None
patent: 102 07 257 (2003-09-01), None
patent: 1 184 115 (2002-03-01), None
patent: 01/88321 (2001-11-01), None

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-2679587