Shot Peening Apparatus

Author:  Metal Improvement Co./Feld, Engel
Source:  US Patent 4,365,493
Doc ID:  1982012
Year of Publication:  1982
Abstract:  
The shot peening apparatus for shot peening the surface of a workpiece has a gravity shot distribution subassembly which includes deflectors which utilize the kinetic energy in the falling shot to effect a substantially uniform distribution of shot into a conduit for conducting the shot at gravitational velocity to an elongated nozzle. Associated with the nozzle is a plenum communicating with the nozzle and containing a gaseous fluid under a relatively low static pressure for accelerating the shot out of said nozzle at higher than gravitational velocity for impact against a workpiece.