Pneumatic tool having noise reducing muffling structure
AssigneeMinnesota Mining and Manufacturing Company
InventorsGloria D. Bowen, Zubin P. Daruwala, David W. Hegdahl, Thomas J. Scanlan, Jeffrey W. McCutcheon
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Abstract
The present invention relates to a pneumatic tool having superior sound muffling performance. The pneumatic tool has an exhaust port, wherein a sound muffling structure comprising a nonwoven web of fibers coated with a binder resin, is fitted in said exhaust port to seal said exhaust port, wherein said fibers have diameters of about 30 to about 100 microns and wherein the web has a compression resistance energy of about 0.09 to about 0.14 Joules.
Claims8
A pneumatic tool having an exhaust port and a sound muffling structure fitted within said exhaust port to seal said exhaust port, wherein said sound muffling structure comprises a nonwoven web of fibers coated with a binder resin, wherein said fibers have diameters of about 30 to about 100 microns, and wherein the web has a compression resistance energy of about 0.09 to about 0.30 Joules.
Dependencies are inferred from the claim text.