EP 4218525 A1 20230802 - FLOOR TREATMENT MACHINE
Title (en)
FLOOR TREATMENT MACHINE
Title (de)
BODENBEARBEITUNGSMASCHINE
Title (fr)
MACHINE DE TRAITEMENT DE SOL
Publication
Application
Priority
GB 202200990 A 20220126
Abstract (en)
The present invention concerns the field of floor treatment machines such as scrubbers, finishers or polishers. There is provided a floor treatment machine comprising a base portion provided with two or more rotatable generally disc-shaped floor-facing work heads which are arranged side by side and define therebetween a sagittal plane which is vertical with respect to the floor, wherein each work head has a generally vertical axis of rotation, the machine being provided with drive means for rotating the work heads about the generally vertical axis of rotation, wherein in the drive means is/are arranged to rotate both work heads in the same rotational direction around each generally vertical axis of rotation, and characterised in that a corrective measure is applied to at least one of the work heads, which measure acts to neutralize any net force generated by the co-rotation of the work heads so as to prevent drift of the machine, or which measure acts to modify a net force created by the co-rotation so as to provide a net propulsive force in a direction of use. The corrective measure may introduce a bilateral asymmetry as between the orientation of the rotational axes of the work heads. The bilateral asymmetry is in the orientation of the rotational axis of one work head with respect to the other. A machine as claimed in any of the preceding claims wherein the rotational axis of one work head is inclined towards a sagittal plane more than the other.
IPC 8 full level
A47L 11/08 (2006.01); A47L 11/206 (2006.01); A47L 11/40 (2006.01)
CPC (source: EP GB)
A47L 11/08 (2013.01 - EP GB); A47L 11/16 (2013.01 - GB); A47L 11/206 (2013.01 - EP GB); A47L 11/283 (2013.01 - GB); A47L 11/293 (2013.01 - GB); A47L 11/305 (2013.01 - GB); A47L 11/4038 (2013.01 - GB); A47L 11/4066 (2013.01 - EP); A47L 11/4069 (2013.01 - EP)
Citation (applicant)
- US 8887348 B2 20141118 - KENTER RAINER [DE], et al
- US 9826874 B2 20171128 - FRANKE RUDOLF [DE], et al
- US 4457036 A 19840703 - CARLSON ALFRED D [US], et al
- US 2318960 A 19430511 - OKUN NATHANIEL N
- US 2220224 A 19401105 - ERNST FABER
- US 2012279010 A1 20121108 - KENTER RAINER [DE], et al
- US 2015113757 A1 20150430 - FRANKE RUDOLF [DE], et al
Citation (search report)
- [A] US 2019223677 A1 20190725 - YOON SUNGHO [KR], et al
- [A] US 2018035858 A1 20180208 - JUNG WOO CHUL [KR], et al
- [A] WO 2018012921 A1 20180118 - LG ELECTRONICS INC [KR]
Designated contracting state (EPC)
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4218525 A1 20230802; EP 4218525 B1 20240807; GB 202200990 D0 20220309; GB 2615080 A 20230802
DOCDB simple family (application)
EP 23153298 A 20230125; GB 202200990 A 20220126