(19)

(11)

EP 3 994 394 A1

(12)

(43) Date of publication: 11.05.2022 Bulletin 2022/19 (21) Application number: 19936422.5 (22) Date of filing: 03.07.2019

(51) International Patent Classification (IPC):  F24B 1/20(2006.01) F24C 15/00(2006.01) F21V 33/00(2006.01) (52) Cooperative Patent Classification (CPC): G02B 27/20; F24C 3/126 (86) International application number: PCT/US2019/040513 (87) International publication number: WO 2021/002861 (07.01.2021 Gazette 2021/01)

(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: Schulterbrandt, Takisha Clarksville, Maryland 21029 (US)	(72) Inventor: Schulterbrandt, Takisha Clarksville, Maryland 21029 (US) (74) Representative: Shaya, Darrin Maurice  270 Bath Road Slough, Berkshire SL1 4DX Slough, Berkshire SL1 4DX (GB)