Drill hammer

Details Drill hammer Drill hammer

1979-04-17

1981-07-28

Pate, III, William F.

Boring or penetrating the earth

With below-ground tool drive prime mover

173 73, 173 78, 173 80, E21B 414

Patent

active

042805708

ABSTRACT:
An impact and rotary rock drilling tool for operation by compressed air fed through a three-part control unit that contains a valve and duct system and is housed in a cage mounted to an outer tube. A central spindle tube is positively connected to the control unit and guides a main ram as well as an intermediate ram that rests on top of a steel drill member for reciprocating movement therewith. An insert portion secured inside the central spindle tube, which latter may comprise a check valve at its lower end, has partitions separating a plurality of passages with ports arranged in the central spindle tube for selected flow connections.

REFERENCES:
patent: 1868684 (1932-07-01), Bayles
patent: 2661928 (1953-12-01), Topanelian, Jr.
patent: 2800884 (1957-07-01), Mori
patent: 2851251 (1958-09-01), Mori
patent: 3084673 (1963-04-01), Sears
patent: 3164214 (1965-01-01), Oelke
patent: 3527239 (1970-09-01), Boom
patent: 3768576 (1973-10-01), Martini
patent: 3854539 (1974-12-01), Sweeney
patent: 4030554 (1977-06-01), Kammerer
patent: 4163478 (1979-08-01), Adcock

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-546110