| US 7,454,813 B2 | ||
| Cleaning device and method | ||
| Helmut Kaltenegger, New Street of Bay Junction, STJ 15, St. Julians (Malta) | ||
| Assigned to Helmut Kaltenegger, Malta (Austria) | ||
| Filed on Sep. 16, 2004, as Appl. No. 10/942,472. | ||
| Claims priority of application No. 20 2004 013 199 U (DE), filed on Aug. 23, 2004. | ||
| Prior Publication US 2006/0037166 A1, Feb. 23, 2006 | ||
| Int. Cl. A47L 25/00 (2006.01); A47L 13/42 (2006.01) | ||
| U.S. Cl. 15—244.1 [15/210.1] | 12 Claims |
| 1. A cleaning device, comprising the following layers firmly bonded to one another:
a soft sponge layer, having at least one of: a rib and a bead on its surface;
an intermediate layer, which is harder than the sponge layer and
a cloth layer which is bonded to the intermediate layer opposite to the sponge layer.
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