Hydraulic percussion hammer

Details Hydraulic percussion hammer Hydraulic percussion hammer

1996-06-24

1999-04-06

Smith, Scott A.

Tool driving or impacting

Impacting devices

Hammer head constitutes piston of drive motor

173128, 173138, 91300, 91321, B25D 926

Patent

active

058905480

ABSTRACT:
Hydraulic percussion hammer, in which a motion of a percussion piston (1) is controlled by a main valve (3), the control motion of which is controlled by a separate control valve (9) in such a way that the main valve changes its state, when the pressure acting on the control valve (9) rises to a predetermined value. The percussion hammer comprises a controller (21) mounted in its return duct (13), by which controller an outflow of pressure fluid from the percussion hammer can be adjusted in such a way that the filling rate of a pressure accumulator (7) and thus the length of a return motion of the percussion piston (1) are proportional to the flow resistance provided by the controller (21).

REFERENCES:
patent: 3759335 (1973-09-01), Coyne
patent: 4460051 (1984-07-01), Widmer
patent: 4474248 (1984-10-01), Musso
patent: 4817737 (1989-04-01), Hamada et al.
patent: 4899836 (1990-02-01), Venot
patent: 5392865 (1995-02-01), Piras
patent: 5653295 (1997-08-01), Juvonen et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1363033