The Toro Company

Rodney D Lund

Chadwick Aaron Shaffer

Thomas J Beckey

Steven J Svoboda

Steve R Porter

Steven T O'Brien

Steven R Porter

The present invention provides for noise reduction during operation of a portable blower by reducing the noise or acoustic energy escaping from the housing outlet and blower tube. The noise reduction is achieved by placing sound absorbing material in the blower tube. The sound absorbing material may include flared upstream and downstream ends to reduce turbulence. The sound absorbing material may be held within the blower tube by an insert frame such that substantial portions of the sound absorbing material are exposed to air passing through the blower tube. Also disclosed is a sound absorbing insert that can be placed within an existing blower tube to retrofit portable blowers with noise reduction technology.

Portable blower tube noise reduction

Portable blower with blower tube noise reduction

The present invention provides for noise reduction during operation of a portable blower by reducing the noise or acoustic energy escaping from the inlet of the blower housing. The noise reduction is achieved in one respect by placing sound absorbing material in a plenum attached to the inlet opening of the blower housing. Other features of the preferred plenum include louvered openings and angled engagement members to draw the plenum tightly against the blower housing.

Portable blower with noise reduction

Growing community of inventors

Blaine, MN, United States of America

Rodney D Lund