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(19) 

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(12) EUROPEAN PATENT APPLICATION 

(43) Date of publication: 07.04.2021 Bulletin 2021/14 

(21) Application number: 20166067.7 

(22) Date of filing: 26.03.2020 

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN 

(30) Priority: 26.03.2019 JP 2019058028 

(71) Applicant: Yamabiko Corporation Ohme-shi Tokyo 198-8760 (JP) 

(54) ELECTRIC POWER WORK DEVICE 

(57) Provided is an electric power work device (1A; 1B; 1C), which is a chain saw, including: a body case (10);a cutting part (20) protruding forward from the body case (10); a motor (30) to drive the cutting part (20), and a battery(90) .A top handle (40)isprovided atan upside with respect to the body case (10), and, a side handle 

(51) Int Cl.: 

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(72) Inventors: 

• OSAWA, Hisato Ohme-shi, Tokyo 198-8760 (JP) 

• NAKANO, Kenji Ohme-shi, Tokyo 198-8760 (JP) 

• TAKEUCHI, Noriyuki Ohme-shi, Tokyo 198-8760 (JP) 

(74) Representative: Dehns St. Bride’s House 10 Salisbury Square London EC4Y 8JD (GB) 

(50) is provided at a left side surface of the body case (10) .The battery (90)isdetachablymounted inabattery part (12) formed behind the top handle (40). Further, in- terference reduction part (100; 200; 300; 400; 500) is formed behind the top handle (40)to reduce interference with a palm holding the top handle (40) or a wrist. 

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# (11) EP 3 800 013 A1 

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