The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2012
Filed:
Jan. 14, 2011
Hung T. Du, Reisterstown, MD (US);
Earl M. Ortt, Bel Air, MD (US);
Brandon L. Verbrugge, Towson, MD (US);
Garrett P. Mccormick, Manchester, MD (US);
Michael A. Zemlock, North Haven, CT (US);
Eric J. Samuelsen, Stewartstown, PA (US);
Kevin M. Hogan, Jarresttsville, MD (US);
Jiaqi Zhang, Cockeysville, MD (US);
Ren H. Wang, Timonium, MD (US);
Frank A. Mannarino, Towson, MD (US);
Allison A. Smith, Towson, MD (US);
Therese M. Rakosky, Towson, MD (US);
Kyle J. Wheaton, Towson, MD (US);
Antonios M. Nicolaidis, Towson, MD (US);
Shane Ashley Moll, Towson, MD (US);
Eric L. Bernstein, Baltimore, MD (US);
Hung T. Du, Reisterstown, MD (US);
Earl M. Ortt, Bel Air, MD (US);
Brandon L. Verbrugge, Towson, MD (US);
Garrett P. Mccormick, Manchester, MD (US);
Michael A. Zemlock, North Haven, CT (US);
Eric J. Samuelsen, Stewartstown, PA (US);
Kevin M. Hogan, Jarresttsville, MD (US);
Jiaqi Zhang, Cockeysville, MD (US);
Ren H. Wang, Timonium, MD (US);
Frank A. Mannarino, Towson, MD (US);
Allison A. Smith, Towson, MD (US);
Therese M. Rakosky, Towson, MD (US);
Kyle J. Wheaton, Towson, MD (US);
Antonios M. Nicolaidis, Towson, MD (US);
Shane Ashley Moll, Towson, MD (US);
Eric L. Bernstein, Baltimore, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A power tool has a motor having a stator made by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the return path pieces are affixed to the pole pieces. An armature having an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The field coils may be formed so that they extend beyond pole tips of the pole pieces.