Blackboard eraser cleaner
US11951765B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2023 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Jul 24, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L21/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A blackboard eraser cleaning device is provided and includes an outer shell (1). A cover (2) is arranged at the upper part of the outer shell (1), an inner shell (3) is arranged inside the outer shell (1). A clamping mechanism (19) is arranged at the upper end of the inner shell (3). A leaning station (8) is defined inside the clamping mechanism (19). A cylinder (9) is arranged around the clamping mechanism (19). A height adjustment mechanism (10) is arranged inside the outer shell (1). The height adjustment mechanism (10) includes a servo (101) arranged inside the outer shell (1) and located on a side of the inner shell (3). According to the present application, a variety of cleaning modes may be achieved to meet the actual usage of the blackboard eraser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.