Nozzle Noise Silencer

Author:  John E. Sneckenberger
Source:  US Patent 3,982,605
Doc ID:  1975022
Year of Publication:  1975
Abstract:  
A silencer device for attachment to a nozzle, or a combined nozzle and silencer, are provided for reducing the noise generated by compressed air or a compressed air-particulate mixture exiting from conventional nozzles of the type used for air blasting, sand blasting, or peening operations. The silencer has a bore of substantially constant diameter which is, within limits, larger than the nozzle bore for which the silencer is designed.