Projected knob device
US9728356B2 · kind B2 · utility
3Cited by
11References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 2, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jun 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2231/026
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A knob device includes a knob body, a graphic plate, and a light source. The knob body has a hollow space and has an end equipped with a screen. The graphic plate has multiple graphic windows including graphic symbols, respectively. The light source is configured to emit light through both at least one of the graphic windows and the hollow space to project at least one of the graphic symbols on the screen. The graphic plate is movable to switch the at least one of the graphic symbols to another of the graphic symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.