Device comprising a movably arranged functional body and a safety mechanism for stopping movement of the functional body
US9351617B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2012 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Nov 27, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4069
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A device for performing an action on a surface comprises at least one movably arranged functional body (21, 22), driving means for driving the functional body (21, 22), main safety means for decoupling the driving means from the functional body (21, 22) when a load exerted by the functional body (21, 22) in the direction of the driving means under the influence of resistance forces experienced by the functional body (21, 22) exceeds a predetermined maximum value, and additional safety means (40) which are movably arranged in the vicinity of the functional body (21, 22), and which are capable of exerting loads on the main safety means to different extents in different positions, at a side of the main safety means associated with the functional body (21, 22). The additional safety means may comprise a bar (40) having a non-circular cross-sectional area, which is rotatable about its longitudinal axis (41).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.