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:
Aug. 28, 2012
Filed:
Oct. 01, 2008
Sanjeev Bharani, Normal, IL (US);
Cameron T. Lane, Decatur, IL (US);
Sanjeev Bharani, Normal, IL (US);
Cameron T. Lane, Decatur, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An electric drive machine includes an axle assembly having a central axle housing. An electric drive motor, having a motor housing, is oriented along an axis and disposed within the central axle housing. An air cooling system includes a blower fluidly connected to and positioned upstream of an opening of the central axle housing. An airflow path through the central axle housing includes an upstream segment and a downstream segment. The upstream segment extends from the opening to an airflow deflector, and is configured for airflow in a first direction along an axial path. The downstream segment extends from the airflow deflector to the motor housing, and is configured for airflow in a second direction, which is opposite the first direction, along a helical path.