Electrical work apparatus
AssigneeAndreas Stihl AG & Co. KG
InventorsDavid Vorsmann, Max Dopatka
Life of this patent
Estimating the term…
Abstract
An electrical work apparatus includes a housing and a drive motor arranged in the housing. The drive motor is in the form of an electric motor and is provided for driving a tool of the work apparatus. A cooling air channel is formed in the housing for guiding a cooling air flow for cooling the drive motor. The cooling air channel has a curved channel section. A magnetic separator arrangement is arranged in the cooling air channel for filtering ferromagnetic particles from the cooling air flow. The magnetic separator arrangement is arranged in the curved channel section of the cooling air channel upstream of the drive motor with respect to the cooling air flow.
Claims17
An electrical work apparatus comprising:
- a housing;
- a drive motor arranged in said housing;
- said drive motor being an electric motor and being configured to drive a tool of the work apparatus;
- a cooling air channel formed in said housing for guiding a cooling air flow for cooling said drive motor;
- said cooling air channel having a curved channel section;
- a magnetic separator arrangement arranged in said cooling air channel for separating ferromagnetic particles from said cooling air flow;
- and,
- said magnetic separator arrangement being arranged in said curved channel section of said cooling air channel upstream of said drive motor with respect to said cooling air flow.
Dependencies are inferred from the claim text.