Cooling a drum pump motor and/or battery
US9273697B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A power tool that includes a motor sub-assembly, one or more batteries, and a cooling fan. The motor sub-assembly includes a motor and a motor fan. The one or more batteries are configured to provide power to the motor. The cooling fan is disposed vertically above the motor sub-assembly and the one or more batteries during operation of the power tool, where the cooling fan is configured to draw air in an upwards direction through the cooling fan, thereby dissipating heat from the motor and/or the one or more batteries, and where the upwards direction is the same a free convection direction associated with a density difference between hot air radiating from the motor and/or one or more batteries and surrounding cooler air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.