High precision operating knob
US6513200B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05G1/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An operating knob (1) includes an upper knob portion (11), a lower knob portion (12), and a neck portion (13) connecting the upper knob portion with the lower knob portion. The upper knob portion is hexagonal in shape and defines a first recess (111) in each of six side edges (112) thereof. The lower knob portion defines a plurality of second recesses (122) in a side edge (124) thereof. A screw hole (14) is axially defined through the lower knob portion into the upper knob portion. The number of second recesses is greater than the number of first recesses. When turning the knob, two to four fingers (21, 22) of the user rotate the upper knob portion in a clockwise or anti-clockwise direction and a thumb (23) of the user pushes the side edge of the lower knob portion in the clockwise or anti-clockwise direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.