Echo, Inc.

Lawrence Will

Michael G Comerford

Randall J Griffin

A portable fluid blower having a housing defining an intake region for incoming fluid, an output region, and a fluid path for controllably communicating fluid entering the intake region to the output region at which fluid is discharged from the housing. An impeller on the housing is rotatable around a first axis and draws fluid into the fluid path through the intake region and accelerates fluid drawn into the fluid path so that the fluid drawn into the fluid path through the intake region is accelerated in the fluid path and discharged in an accelerated state at the output region. A drive rotates the impeller around the first axis. The fluid path has a first curved fluid path portion that extends at least partially around the first axis, and a second transition path portion through which fluid communicates from the input region towards the first curved fluid path portion. At least part of the second transition path portion is defined by a guide surface, that extends continuously around a central axis that is substantially coincident with the first axis, and has a diameter that increases progressively from the intake region axially relative to the central axis towards the first curved fluid path portion so that fluid moving from the intake region towards the first curved fluid path portion is guided progressively radially outwardly relative to the central axis through the part of the second transition path portion.

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Lake Zurich, IL, United States of America

Lawrence Will