Rotary percussion hydraulic drilling machine

Details Rotary percussion hydraulic drilling machine Rotary percussion hydraulic drilling machine

1979-03-23

1981-09-29

Reynolds, Wm. Carter

Tool driving or impacting

Impacting devices

With means for rotating tool

173 12, 173DIG4, E21C 320

Patent

active

042917719

ABSTRACT:
A rotary percussion hydraulic drilling machine has striker piston slidably mounted inside a cylinder which defines a first annular chamber connected to a one-way valve slidably mounted inside a chamber connected to an accumulator comprising a diaphragm, leading to which is a hydraulic fluid inlet pipe and a second annular chamber connected to a control valve. This control valve, governed by the movements of the piston, connects the second chamber alternately to the high pressure pipe and to the return pipe. The valve, constructed in the form of a sleeve and subject to the force of a spring has a lateral connection allowing the direct passage of fluid to the return pipe, a rotary motor being located in the inlet pipe. Thus solely rotary operation for a rate of flow less than a certain threshold value and rotary/percussive operation for rates of flow beyond this threshold value may be obtained.

REFERENCES:
patent: 3822752 (1974-07-01), Montabert
patent: 3908767 (1975-09-01), Klemm
patent: 3965799 (1976-06-01), Juvonen et al.
patent: 4006665 (1977-02-01), Klemm
patent: 4006783 (1977-02-01), Granholm

Affiliated with

Also associated with

Rating

Rotary percussion hydraulic drilling machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1230009