(19)

(11)

EP 3 852 583 A1

(12)

(43) Date of publication: 28.07.2021 Bulletin 2021/30 (21) Application number: 19779711.1 (22) Date of filing: 18.09.2019

(51) International Patent Classification (IPC):  A47F 1/12(2006.01) A47F 10/02(2006.01) G09F 3/20(2006.01) G07F 9/02(2006.01) A47F 5/08(2006.01) G06Q 10/08(2012.01) A47F 3/00(2006.01) (86) International application number: PCT/US2019/051724 (87) International publication number: WO 2020/061187 (26.03.2020 Gazette 2020/13)

(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: 19.09.2018 US 201816135151 (71) Applicant: RTC Industries, Inc. Rolling Meadows, IL 60008 (US)	(72) Inventors: COSTELLO, Patrick Arlington Heights, Illinois 60004 (US) HARDY, Stephen N. Wadsworth, Ohio 44281 (US) DIPAOLO, Tony Naperville, Illinois 60565 (US) (74) Representative: Bryers LLP  7 Gay Street Bath, Bath and North East Somerset BA1 2PH Bath, Bath and North East Somerset BA1 2PH (GB)