Muffler for portable pneumatic tool
AssigneeIngersoll-Rand Company
InventorsEdward I. Auerbach, Lewis C. Pritchard, John M. Clapp
Life of this patent
Estimating the term…
Abstract
The invention relates to a muffler for portable pneumatic tools wherein the exhaust of the pneumatic motor is passed into an expansion chamber having a perforated outlet baffle biased to the direction of the flow in the chamber. The flow from the expansion chamber enters a muffler chamber having an outlet baffle also biased to the direction of fluid flow. Both the first and second baffle are formed in an end cap for the handle of the pneumatic tool and form a removable extension thereof.
Claims14
A muffler for portable pneumatic power tools or the like which exhaust pneumatic fluid to atmosphere comprising:
- an enclosure attached to the power tool forming a muffler chamber receiving the exhaust pneumatic fluid;
- a first perforated baffle plate forming one wall of said enclosure for passing the exhaust pneumatic fluid into said muffler chamber;
- a second perforated baffle plate opposite said first perforated baffle plate forming a second wall of said enclosure for passing the exhaust pneumatic fluid in one direction of fluid flow through said enclosure and said muffler chamber and out of said muffler chamber to the atmosphere;
- and
- said second perforated baffle is set at an angle biased to the direction of exhaust pneumatic fluid flow through said muffler chamber, and at an angle biased to said first perforated baffle plate.
A muffler for portable pneumatic power tools or the like which exhaust pneumatic fluid to atmosphere comprising:
- a muffler enclosure forming a muffler chamber installed in the exhaust expansion chamber of a portable pneumatic power tool for receiving the exhaust pneumatic fluid;
- a first perforated plate at one end of said enclosure set at an angle biased to the direction of pressure fluid flow at an angle of between 30 and 60 degrees to the direction of exhaust pneumatic fluid flow for passing the exhaust pneumatic fluid into said muffler chamber;
- a second perforated baffle plate at another end of said enclosure for passing the exhaust pneumatic pressure to said muffler chamber to atmosphere set at an angle of between 60 and 80 degrees to the direction of exhaust pneumatic fluid flow;
- and
- wherein said first and said second perforated baffle are set at a different angle biased to the direction of pressure fluid flow.
Dependencies are inferred from the claim text.