Hydraulic impact tool

Tool driving or impacting – Impacting devices – Impact transmitting anvil

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

173119, 91398, 91403, 91404, B25D 900

Patent

active

048526649

ABSTRACT:
An impact tool for striking a tool such as a chisel includes a piston mounted in a cylinder. Upper, middle and lower chambers are formed therebetween. Pressure oil is fed into and discharged from the middle and lower chambers to reciprocate the piston in the cylinder under oil pressure. During a downward stroke of the piston, the oil pressure in the lower chamber is kept low. But just before it strikes a tool, the oil pressure in the lower chamber is adapted to increase so as to prevent what is called cavitation or prevent air bubbles mixed in the pressure oil in the lower chamber from growing suddenly owing to a sharp drop in the oil pressure which is caused by the rebound of the piston after striking the tool.

REFERENCES:
patent: 3701386 (1972-10-01), Feucht
patent: 3741316 (1973-06-01), Alajouanine
patent: 4034817 (1977-07-01), Okada

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydraulic impact tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-125687

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.