Title:
POWER TOOL WITH MOTOR AIR FLOW PATH CONTROL
Document Type and Number:
WIPO Patent Application WO/2010/021963
Kind Code:
A3
Abstract:
In accordance with an aspect of the present disclosure, a power tool has an electric motor having a stator disposed in a field case. The stator has field coils having opposed axial ends that extend axially outwardly from opposed axial ends of a lamination stack of the stator. An armature is disposed in the stator and has a shaft on which a fan is disposed. There are gaps between the opposed axial ends of the respective field coils. The fan baffle includes an air direction member that extends into one of the gaps to direct air flow between the armature and the stator. In an aspect, the fan baffle includes a plurality of such members, one for each gap.
Inventors:
MILLER PHILIP T (US)
FRIEDMAN BRIAN E (US)
FRIEDMAN BRIAN E (US)
Application Number:
PCT/US2009/053986
Publication Date:
May 27, 2010
Filing Date:
August 17, 2009
Export Citation:
Assignee:
BLACK & DECKER INC (US)
MILLER PHILIP T (US)
FRIEDMAN BRIAN E (US)
MILLER PHILIP T (US)
FRIEDMAN BRIAN E (US)
International Classes:
H02K23/00; H02K7/14
Foreign References:
| US20040163831A1 | 2004-08-26 | |||
| US20050191888A1 | 2005-09-01 | |||
| US20040217661A1 | 2004-11-04 |
Other References:
See also references of EP 2319163A4
Attorney, Agent or Firm:
FULLER, Roland, A., III et al. (Dickey & Pierce P.L.C.,P.O. Box 82, Bloomfield Hills MI, US)
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