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:
Apr. 30, 2024
Filed:
Apr. 23, 2020
Black & Decker Inc., New Britain, CT (US);
John B. Fogle, White Hall, MD (US);
Dustin Jeffries, Baltimore, MD (US);
Michael R. Marjomaa, Mount Wolfe, PA (US);
Kevin L. Pulley, White Marsh, MD (US);
Vincent W. Zou, Lutherville-Timonium, MD (US);
Jarrett A. Dunston, Bel Air, MD (US);
David J. Smith, Columbia, MD (US);
Rene Thieme, Riesa, DE;
Tim Heimrich, Bad Camberg, DE;
Tobias Heep, Hadamar-Steinbach, DE;
Daniel Bernhart, Bad Camberg, DE;
Dieter Schmidtfrerick, Idstein, DE;
Black & Decker Inc., New Britain, CT (US);
Abstract
A brushless direct-current motor is provided includes an inner stator and an outer rotor. The rotor includes a rotor core disposed around the stator, an inner annular member mounted on a rotor shaft, and a plurality of radial blades extending angularly from the rotor core to the inner annular member forming a fan. A first end cap is provided including a radial back plate proximate the fan and a center opening in the radial back plate through which the rotor shaft extends. A second end cap is provided including a main body disposed adjacent the stator opposite the fan. The radial back plate of the first end cap includes at least one sloped surface forming at least one air gap such that the airflow generated by the fan is centrifugally guided within the first end cap by the sloped surface and caused to exit through the air gap.