07748381 is referenced by 15 patents and cites 24 patents.

A portable cooling or respiratory blower system of the type carried by a user's body includes a housing having two air flow chambers. An impeller is rotatably disposed between the two air flow chambers and includes a base wall that places the two air flow chambers in non-fluidic communication when the impeller is rotated. A separate plurality of blades is provided on each side of the base wall.

Title
Portable blower system
Application Number
11/275087
Publication Number
7748381 (B2)
Application Date
December 9, 2005
Publication Date
July 6, 2010
Inventor
David E Livingstone
Harrietsville
CA
Pierre Legare
Brockville
CA
Lisa M Croll
Brockville
CA
Agent
Anna A Wetzels
Assignee
3M Innovative Properties Company
MN, US
IPC
A61M 11/00
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