# US 11,304,582 B2 · Cleaner with hot plate for floors provided with a sandwich panel for heating and gradual releasing of the water to an underlying cleaning cloth

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- Number: US 11,304,582 B2
- Document ID: US11304582B2
- Status: Granted
- Kind: B2
- Application number: 16/083,591
- Filed: 2017-03-14
- Published: 2020-10-22
- Granted: 2022-04-19
- Earliest claimed: 2016-03-15
- Applicants: Pier Antonio Milanese
- Inventors: Pier Antonio Milanese
- Web page: https://patentgrep.com/patent/US11304582B2

## CPC

- A47L 11/4086: {Arrangements for steam generation}
- A47L 11/4036: {Parts or details of the surface treating tools}
- A47L 11/4075: {Handles; levers}
- A47L 13/22: with liquid-feeding devices
- A47L 13/225: {Steam mops}
- A47L 13/24: Frames for mops; Mop heads (handles B25G)
- A47L 13/257: for mops made of sponge material
- B32B 5/18: characterised by features of a layer {of} foamed material
- B32B 5/245: {another layer next to it being a foam layer}
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2262/0276: Polyester fibres
- B32B 2266/0278: Polyurethane
- B32B 2432/00: Cleaning articles, e.g. mops or wipes
- 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)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

Hot plate cleaner for floors including a handgrip, a handle, a tank for water, a main body shaped as a brush, a heating plate below the brush and a thermostat, and cleaning fabrics for the floor hooked below a sealing frame, adapted to be hooked and unhooked below the brush, with the interposition of a sandwich panel maintained in contact with the heating plate having a layer of polyurethane foam, placed between two polyester fabrics, and a waterproof element applied to the panel to let the water flow from the tank scatter on the sandwich panel to dampen it so to act as a tank in order to reach the same temperature as the heating plate and keep it unchanged until the panel dries and transmit the same temperature to the cleaning fabric.

## Claims

### Claim 1

A cleaner with hot plate for floors comprising:
a handgrip (1),
a handle (2),
a tank (3) for containing water,
a main body shaped as a brush (5), into which the handgrip (1) is pivoted by means of an universal joint (4);
a heating plate (6) fixed below the body (5) and provided with a heating element (9) for heating the plate (6) and having a thermostat (10) for regulating temperature, as well as an electrical supplying cable (7) for the heating element (9); and
cleaning fabrics (16) for the floor, applied to and supported below said heating plate (6),
wherein said cleaning fabrics (16) are hooked below a sealing frame (13) below said body (5), said sealing frame connected to a sandwich panel (12) kept in direct contact with the heating plate (6); and
wherein said sandwich panel (12) comprises at least a layer of polyurethane foam (18) having a suitable thickness and density, placed between two polyester fabrics (17) and coupled thereto, and a waterproof element (19) applied centrally to the sandwich panel (12) onto a surface coming in contact with the heating plate (6); the water coming from the tank (3) drains through a connection pipe (25) and at least a central passage (11) of the heating plate (6) in a scattered manner onto the sandwich panel (12), in such a way that the sandwich panel is wetted by the water drained uniformly on to the surface thereof;
wherein said sandwich panel (12) is adapted to retain the water and heats to a same temperature of the heating plate (6); by maintaining the same temperature, the sandwich panel is dried at approximately 100° C. and transmits heat to the underlying cleaning fabric (16); and
wherein said water tank (3) is provided with a plug (21) and a filter (22), into which a ball valve (23) is installed and is operated by gravity; when said ball valve is in a vertical position thereof, a water passage (24) from the tank (3) toward the connection pipe (25) prevents the sandwich panel (12) from becoming wet; wherein when said ball valve is in an oblique position and displaced from said vertical position thereof (23′), said water passage (24) allows the sandwich panel (12) to become wet.

### Claim 2 (depends on 1)

The cleaner with said hot plate according to claim 1, wherein said water tank (3) is integral with said handle (2), so that when said handle is vertical, said ball valve (23) is in the vertical position thereof, and when said handle (2) is angled, said ball valve (23) is in the oblique position thereof.