Automated devices using rotational motion to apply chalk to a surface
US10773174B1 · kind B1 · utility
2Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2018 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jun 21, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H17/25
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Various devices utilize rotational movement of a piece of chalk to apply a graphic to a surface. Such a device includes a chassis, a motor connected to the chassis, a solid piece of chalk supported by a mounting structure carried by the chassis, and a rotatable axle or spindle that transmits rotational movement from the motor to the solid piece of chalk via the mounting structure such that the solid piece of chalk may be sanded by a surface to render a graphic to the surface. Some such devices are vehicles. Various systems include such devices as well as remote communication devices for operational control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.