Roof drill and drill rod system

Details Roof drill and drill rod system Roof drill and drill rod system

1978-09-08

1980-06-10

Purser, Ernest R.

Boring or penetrating the earth

With tool shaft detail

Axially telescoping shaft section

279103, 403287, 403365, 175315, E21C 1500

Patent

active

042068215

ABSTRACT:
An improved roof drill bit and roof drill driving assembly which is characterized as a "hands off" type in which the drill, driver, and drill extension are designed and assembled to have a stability which enables the operator to avoid guiding the drill with his hands. An improved drill bit prevents plugging of the assembly when used with suction systems and provides a heavier wall construction. Special adaptors are provided for driving drills and drill extensions.

REFERENCES:
patent: 748398 (1903-12-01), Middleton
patent: 2479698 (1949-08-01), Paquin
patent: 2759734 (1956-08-01), Velepec
patent: 3519091 (1970-07-01), Leibee et al.
patent: 4009760 (1977-03-01), Hansen et al.
patent: 4086972 (1978-05-01), Hansen et al.
patent: 4092078 (1978-05-01), Klotz et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-858559