US 6,570,284 C1 (7025th)
BRUSHLESS MOTOR HAVING DOUBLE INSULATION
Michael Jeffrey Agnes, Bel Air, Md.; Garrett Patrick McCormick, Baltimore, Md.; Richard Thomas Walter, Baldwin, Md., and Christopher Ryan Yahnker, Eldersburg, Md., assignors to Black & Decker Inc., Newark, Del.
Reexamination Request No. 90/010,099, Feb. 27, 2008.
Reexamination Certificate for Patent 6,570,284, issued May 27, 2003, Appl. No. 14,711, Dec. 11, 2001.
Int. Cl. H02K 3/34;29/06;1/18;29/10;3/32 (2006.01)
U.S. Cl. 310—89
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
Claims 1-15 are cancelled.
[1. An electronically commutated brushless motor comprising:
a motor housing;
a bearing end cap coupled to said motor housing adapted to couple said motor to a motor driven product; and
a double insulated rotor and stator assembly annularly fitted in said housing, said double insulated rotor and stator assembly comprising a rotor assembly, wherein said rotor assembly comprises:
a shaft configured to deliver torque to said motor driven product;
a rotor stack coupled to said shaft; and
a non-conductive electrically insulating tube disposed on said shaft between said shaft and said rotor stack, thereby providing a first layer of electrical insulation.]