Invention Grant
- Patent Title: Handheld work apparatus
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Application No.: US16198640Application Date: 2018-11-21
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Publication No.: US10662855B2Publication Date: 2020-05-26
- Inventor: Jonas Lank , Benjamin Friedrich
- Applicant: Andreas Stihl AG & Co. KG
- Applicant Address: DE Waiblingen
- Assignee: Andreas Stihl AG & Co. KG
- Current Assignee: Andreas Stihl AG & Co. KG
- Current Assignee Address: DE Waiblingen
- Agency: Walter Ottesen, P.A.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7e3d4956
- Main IPC: F01P1/02
- IPC: F01P1/02 ; F01P1/06 ; B25F5/00 ; F02B63/02 ; B27B17/08 ; B27B17/02 ; F02B75/02 ; F01P1/10

Abstract:
A handheld work apparatus has a fan wheel and a combustion engine having a cylinder and a crankcase. The fan wheel, arranged in a housing, is driven by the engine in a rotational direction. The housing includes a rear wall and a peripheral delimiter having a first and a second end delimiting an outlet for cooling air for the cylinder. The outlet extends from the second to the first end in the rotational direction. A throughflow-opening is provided in the housing, through which the cooling air flows out to the outside of the crankcase. The angular distance, measured proceeding from the first end in the rotational direction, between the first end and the throughflow-opening is smaller than the angular distance, measured proceeding from the throughflow-opening in the rotational direction, between the throughflow-opening and the second end. The angular distances are each measured about the rotational axis as a peripheral angle.
Public/Granted literature
- US20190153926A1 Handheld Work Apparatus Public/Granted day:2019-05-23
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