Control knob with safety feature
US7479607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Nov 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2019/143
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a dual-concentric knob, an inner knob acts as a solid ergonomically functional knob for forces below a threshold and collapses into an outer knob for forces above the threshold. In some examples the inner knob also acts as a push button for forces below the threshold.A hand-operated control is mounted on a hub for axial movement between a first position and a second position relative to the hub, a mechanism axially rigidly couples the control to the hub in the first position unless a force greater than a threshold is applied to the control, and a mechanism rotationally couples the control to the hub in both the first and the second positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.