# US 11,297,993 B2 · Wet-cleaning apparatus for the wet cleaning of a floor surface > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,297,993 B2 - Document ID: US11297993B2 - Status: Granted - Kind: B2 - Application number: 16/407,677 - Filed: 2019-05-09 - Published: 2019-11-14 - Granted: 2022-04-12 - Earliest claimed: 2018-05-14 - Assignees: i-mop GmbH - Applicants: i-mop GmbH - Inventors: Rudolf Franke - Web page: https://patentgrep.com/patent/US11297993B2 ## CPC - A47L 11/283: the tools being disc brushes - A47L 11/305: {the tools being disc brushes} - A47L 11/4013: {Contaminants collecting devices, i.e. hoppers, tanks or the like} - A47L 11/4016: {specially adapted for collecting fluids} - A47L 11/4044: {Vacuuming or pick-up tools; Squeegees} - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) ## Abstract A wet-cleaning apparatus for the wet cleaning of a floor surface includes a hand-guidance part, which is connected for pivoting articulation, about at least two joint axes, to a floor part, which in an operating state rests on the floor surface, and is in torque-transmitting operative connection with the floor part. At least one floor-treatment tool is arranged on the floor part and has two disc tools, which in the operating state rest on the floor surface, can be rotated in opposite directions by at least one drive and are arranged and/or configured such that, in the operating state, there is permanent linear propulsion along a cleaning direction onto the floor part. A suction-bar arrangement is arranged behind the floor-treatment tool, as seen in relation to the cleaning direction, and is intended for the suction removal of liquid from the floor surface. A pick-up device is arranged between the at least one floor-treatment tool and the suction-bar arrangement, as seen in the cleaning direction, and picks up and collects solid particles transported to the rear by the floor-treatment tool. ## Claims ### Claim 1 A wet-cleaning apparatus for wet cleaning of a floor surface, comprising: a floor part, which in an operating state rests on the floor surface, a hand-guidance part, which is connected for pivoting articulation, about at least two joint axes, to the floor part, and is in torque-transmitting operative connection with the floor part, at least one floor-treatment tool, which is arranged on the floor part and has two disc tools, which in the operating state rest on the floor surface, are rotatable in opposite directions by at least one drive and are arranged such that, in the operating state, there is permanent linear propulsion along a cleaning direction onto the floor part, a suction-bar arrangement, which is arranged behind the floor-treatment tool viewed in relation to the cleaning direction, for suction removal of liquid from the floor surface, and a pick-up device, which is arranged between the at least one floor-treatment tool and the suction-bar arrangement, the pickup device being configured to pick up and collect solid particles transported rearwardly by the floor-treatment tool. ### Claim 2 (depends on 1) The wet-cleaning apparatus according to claim 1, further comprising: a guide element by which the pick-up device is mounted in a floating manner relative to the suction-bar arrangement and/or the floor-treatment tool, as seen in a vertical direction. ### Claim 3 (depends on 2) The wet-cleaning apparatus according to claim 2, wherein the guide element has at least one stay bolt engaging in a slot. ### Claim 4 (depends on 1) The wet-cleaning apparatus according claim 1, wherein the pick-up device has a pick-up container which picks up and collects the solid particles. ### Claim 5 (depends on 4) The wet-cleaning apparatus according to claim 4, wherein the pick-up device has a supply element which is arranged between a pick-up opening of the pick-up container and the at least one floor-treatment tool, as seen in the cleaning direction, and supplies the solid particles to the pick-up opening. ### Claim 6 (depends on 5) The wet-cleaning apparatus according to claim 5, wherein the supply element has a plate-form extension of the pick-up container. ### Claim 7 (depends on 4) The wet-cleaning apparatus according to claim 4, wherein the pick-up device has a supporting element which supports the pick-up container, in the operating state, on the floor surface. ### Claim 8 (depends on 4) The wet-cleaning apparatus according to claim 4, further comprising: a wiper element in the form of a sealing lip and/or a textile sheet-shaped structure, arranged on an underside of the pick-up container. ### Claim 9 (depends on 4) The wet-cleaning apparatus according to claim 4, wherein the pick-up device has at least one discharging element which discharges liquid picked up in the pick-up container. ### Claim 10 (depends on 9) The wet-cleaning apparatus according to claim 9, wherein the discharging element has one or both of: at least one drainage opening, which is arranged on the pick-up container, and at least one liquid-permeable drainage-wall portion of the pick-up container. ### Claim 11 (depends on 4) The wet-cleaning apparatus according to claim 4, wherein the pick-up device has a restraining element which holds back the solid particles collected in the pick-up container. ### Claim 12 (depends on 11) The wet-cleaning apparatus according to claim 11, wherein the restraining element has a restraining-wall portion of the pick-up container, said wall portion being adjacent to a pick-up opening of the pick-up container. ### Claim 13 (depends on 12) The wet-cleaning apparatus according to claim 12, wherein the restraining-wall portion is configured in the form of a ramp which, in the operating state, extends at an acute angle relative to the floor surface. ### Claim 14 (depends on 1) The wet-cleaning apparatus according to claim 1, wherein the pick-up device has a receiving element, at least part of which rests, in the operating state, on the floor surface. ### Claim 15 (depends on 3) The wet-cleaning apparatus according to claim 3, wherein the slot is formed on the pick-up device and the stay bolt is connected to the suction-bar arrangement. ### Claim 16 (depends on 13) The wet-cleaning apparatus according to claim 13, wherein the restraining-wall portion is configured in the form of an undercut ramp.