B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
B25D9/06—Means for driving the impulse member
B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
Methods of increasing the work efficiency of a tool by generation of a sympathetic vibration condition in the mass being worked, and high speed engines for employing said methods
Vanne alimentee en air comprome puis vidangee instantanement pour creer une deflagration pneumatique afin d'eliminer les matieres adherants sur les parois d'un silo ou quelconque unite de stockage