Invention Grant
- Patent Title: Free wheeling motor fan
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Application No.: US14914314Application Date: 2014-09-04
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Publication No.: US10594188B2Publication Date: 2020-03-17
- Inventor: Glen W. Davidson , Christopher A. Lins , Bradley K. Voigt , David M. Larsen , August F. Legatt , Bret A. Deneson
- Applicant: Graco Minnesota Inc.
- Applicant Address: US MN Minneapolis
- Assignee: Graco Minnesota Inc.
- Current Assignee: Graco Minnesota Inc.
- Current Assignee Address: US MN Minneapolis
- Agency: Kinney & Lange, P.A.
- International Application: PCT/US2014/054010 WO 20140904
- International Announcement: WO2015/034995 WO 20150312
- Main IPC: H02K9/06
- IPC: H02K9/06 ; B05B9/04 ; F16D41/06 ; F16D15/00 ; H02K7/108 ; B05B9/08 ; H02K11/30 ; F01P7/04 ; F01P5/04

Abstract:
A motor assembly includes a shaft, an electric motor operatively connected to the shaft to drive the shaft in a first rotational direction, a clutch assembly connected to the shaft, and a fan connected to the clutch assembly and configured to supply the electric motor with cooling air. The clutch assembly drives the fan when the electric motor drives the shaft and allows the fan to freewheel in the first rotational direction when the electric motor is not driving the shaft. A method of operating a fan cooled electric motor includes energizing the electric motor to drive a shaft in a first rotational direction using the electric motor and de-energizing the electric motor so that it no longer drives the shaft, allowing the fan to freewheel in the first rotational direction.
Public/Granted literature
- US20160211723A1 FREE WHEELING MOTOR FAN Public/Granted day:2016-07-21
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