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:
Jul. 07, 2026
Filed:
Aug. 20, 2024
Andreas Stihl Ag & Co. KG, Waiblingen, DE;
Robert Köhli, Winnenden, DE;
Tilman Seidel, Stuttgart, DE;
Mario Kuschewski, Weil der Stadt, DE;
Jens Riehmann, Stuttgart, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
A work apparatus has an internal combustion engine. The internal combustion engine includes a crankcase in which a crankshaft is mounted rotatably about an axis of rotation. The work apparatus includes a fan spiral and a fan wheel arranged in the fan spiral for conveying cooling air for the internal combustion engine. A cylinder is arranged on the crankcase, and the cylinder includes a first outer side facing the fan wheel and a second outer side facing away from the fan wheel. The fan spiral has a first outlet opening for a first cooling air flow for cooling the first outer side of the cylinder. The fan spiral has a second outlet opening for a second cooling air flow for cooling the second outer side of the cylinder.