(19)

(11)

EP 4 075 937 A1

(12)

(43) Date of publication: 26.10.2022 Bulletin 2022/43 (21) Application number: 20900980.2 (22) Date of filing: 27.10.2020

(51) International Patent Classification (IPC):  A01B 33/02(2006.01) A01B 33/08(2006.01) (52) Cooperative Patent Classification (CPC): A01B 33/08; A01B 1/065; A01B 33/021 (86) International application number: PCT/CN2020/123961 (87) International publication number: WO 2021/120859 (24.06.2021 Gazette 2021/25)

(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: 19.12.2019 HK 32019000116 (71) Applicant: Techtronic Cordless GP Anderson, SC 29621 (US)	(72) Inventors: WONG, Wai For Hong Kong (CN) CHUNG, Koon For Hong Kong (CN) (74) Representative: Novagraaf Group  Chemin de l'Echo 3 1213 Onex 1213 Onex (CH)