(19)

(11)

EP 4 054 390 A1

(12)

(43) Date of publication: 14.09.2022 Bulletin 2022/37 (21) Application number: 19951250.0 (22) Date of filing: 04.11.2019

(51) International Patent Classification (IPC):  A47L 1/05(2006.01) A47L 11/30(2006.01) A47L 7/00(2006.01) (52) Cooperative Patent Classification (CPC): A47L 5/26; A47L 7/0038; A47L 11/4041; A47L 11/4088; A47L 11/4005; A47L 11/4016 (86) International application number: PCT/CN2019/115343 (87) International publication number: WO 2021/087668 (14.05.2021 Gazette 2021/19)

(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 (71) Applicant: Black & Decker Inc. New Britain, CT 06053 (US)	(72) Inventors: JIANG, Jianhui Suzhou, Jiangsu 215021 (CN) JIANG, Renbao Suzhou, Jiangsu 215021 (CN) YANG, Feifei Suzhou, Jiangsu 215021 (CN) WANG, Hongxi Suzhou, Jiangsu 215021 (CN) ZHENG, Peizhong Suzhou, Jiangsu 215021 (CN) (74) Representative: SBD IPAdmin  270 Bath Road Slough, Berkshire SL1 4DX Slough, Berkshire SL1 4DX (GB)