Heated cleaning articles using a calcium oxide and water heat generator
US9809789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2016 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Mar 26, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/041
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cleaning articles including a heat engine incorporated therein. The cleaning article may include a substrate (e.g., a non-woven wipe) including one or more layers. The heat engine may be in the wipe or pad, and includes a reactive metal oxide which upon contact with water, reacts to produce heat. The cleaning article may thus produce water vapor and/or steam upon activation of the heat engine. A venting structure may be provided adjacent to or surrounding the heat engine that includes an impermeable material (e.g., impermeable to water and/or air or other gas), which includes one or more vents through the impermeable material. The venting structure directs water vapor and/or steam to a desired face of the cleaning article, away from the user. A heat barrier layer may insulate a user's hand from the generated heat, and/or a handle may be attachable to the pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.