Central core for a cleaning sponge roller
US8505145B2 · kind B2 · utility
1Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2008 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jun 6, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B1/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An approximately cylindrical central core for cleaning sponge roller having an axially extending internal hole and multiple small holes realizing communication from the internal hole to the circumferential external surface. The central core for cleaning sponge roller is characterized in that the external surface of the central core is provided in the circumferential direction with multiple axially slender projections and that the projections each has an axial section viewed from a direction perpendicular to the axial direction that is not flat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.