Muffler for pneumatic tools

Abstract

The present invention is a muffler for pneumatic tools. The invention includes a hollow nozzle, with the exhaust port being reduced, and some orifices placed at the center thereof. A connector is assembled into the air inlet of the nozzle that allows it to be coupled to a pneumatic tool. A cover is mated externally onto the exhaust port of the nozzle to accommodate an orifice and air vent of the nozzle. Some exhaust holes are provided onto the surface of cover. A noise deadener is installed between the surface of the cover and orifice of nozzle. The air vents are placed at a reduced wall around an orifice of the nozzle, such that some fluid can flow through the unreduced cross-section, thus maintaining proper pressure and reducing the noise level for an improved performance.

1 . A muffler for pneumatic tools, comprising:
 a hollow nozzle, having a reduced exhaust port, a plurality of orifices placed at center thereof, and an air inlet bigger than said exhaust port;   a plurality of air vents of a predefined number being placed onto a reduced wall around an orifice;   a connector, being assembled into an air inlet of the nozzle and being able to be coupled into a preset position;   a cover, being mated externally onto the exhaust port of said hollow nozzle to accommodate said orifice and an air vent of the nozzle and having a surface with exhaust holes provided thereof; and   a noise deadener, being installed between said surface of said cover and said orifice of nozzle.   
   
   
       2 . The muffler defined in  claim 1 , wherein said connector can be assembled onto the nozzle. 
   
   
       3 . The muffler defined in  claim 1 , wherein said connector can be pre-formed into the nozzle. 
   
   
       4 . The muffler defined in  claim 1 , further comprising:
 a porous filtering component placed within said connector.   
   
   
       5 . A muffler nozzle for pneumatic tools, comprising:
 a reduced exhaust port;   at least one orifice, being placed onto said exhaust port;   an air inlet, having a cross-section thereof bigger than said exhaust port; and   a plurality of air vents of a predefined number, being placed into a predefined position on a wall between said air inlet and the exhaust port.   
   
   
       6 . The muffler nozzle defined in  claim 5 , further comprising:
 a connector being placed at said air inlet of nozzle, and being able to be configured onto a preset position of a pneumatic tool;   a cover is placed externally onto the exhaust; and   a noise deadener placed between a surface of said cover and said orifice.   
   
   
       7 . The muffler nozzle defined in  claim 6 , wherein said connector is assembled onto the nozzle. 
   
   
       8 . The muffler nozzle defined in  claim 6 , wherein said connector is pre-formed into the nozzle. 
   
   
       9 . The muffler nozzle defined in  claim 6 , further comprising:
 a porous filtering component placed within said connector.