US 12,263,571 B2
Machine tool and method for cooling a drive unit of the machine tool
Juergen Wiker, Stuttgart (DE); and Daniel Barth, Leinfelden-Echterdingen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/785,363
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Nov. 26, 2020, PCT No. PCT/EP2020/083457
§ 371(c)(1), (2) Date Jun. 14, 2022,
PCT Pub. No. WO2021/136620, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 10 2019 220 623.9 (DE), filed on Dec. 30, 2019; and application No. 10 2020 214 817.1 (DE), filed on Nov. 25, 2020.
Prior Publication US 2023/0001561 A1, Jan. 5, 2023
Int. Cl. B25F 5/00 (2006.01); B24B 23/02 (2006.01); B24B 55/02 (2006.01)
CPC B25F 5/008 (2013.01) [B24B 23/028 (2013.01); B24B 55/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power tool, comprising:
at least one housing unit;
at least one drive unit arranged within the housing unit;
at least one separating unit that is configured to divide at least one fluid stream conducted through the housing unit into at least two sub-streams in dependence on a foreign body density, wherein one sub-stream of the at least two sub-streams has a higher foreign body density in comparison with another sub-stream of the at least two sub-streams; and
at least one fluid cooling unit that is configured to cool the drive unit with the at least two sub-streams,
wherein the at least one separating element includes a helical part.