Brush mandrel for PVA sponge brush
US8898845B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Oct 4, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B13/001
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cleaning device for cleaning substrates is provided. The cleaning device includes a generally cylindrically-shaped brush mandrel and a cylindrical brush. The brush mandrel has a body section with an outer surface positioned about a central axis. The outer surface is interrupted by an engagement member having primary features adjacent secondary features. The brush has a hollow bore formed around the brush mandrel with an inner surface interrupted by a second engagement member which mates the first engagement member. The primary features flow in a direction generally perpendicular to a rotational direction of the brush mandrel around the central axis and include a first surface which is generally perpendicular to the outer surface. The secondary features include a second surface which flows in a direction generally perpendicular to the first surface and along the central axis. No primary feature includes a radially obstructing feature formed over any secondary feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.