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FIG. 1 is a perspective view of an impeller showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof; the other side elevation views being mirror images; and,

FIG. 4 is a rear elevation view thereof.


The ornamental design for an impeller, as shown and described.

Referenced Cited
U.S. Patent Documents
6457953 October 1, 2002 Bradbury et al.
D486572 February 10, 2004 Chen et al.
D509584 September 13, 2005 Li et al.
D571000 June 10, 2008 Bei et al.
Patent History
Patent number: D583461
Type: Grant
Filed: Apr 22, 2008
Date of Patent: Dec 23, 2008
Inventor: Wayne M. Allen (Jamul, CA)
Primary Examiner: Lisa P Lichtenstein
Attorney: Palomar Patent
Application Number: 29/307,485
Current U.S. Class: Fan Or Ventilator Blade (D23/413)