Draft protection device for a balance
US7531759B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Dec 23, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G21/286
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A draft protection device for a balance, which encloses a weighing compartment surrounding a weighing pan, has at least one opening that can be closed by a window. The at least one window has at least two slidable window sections which partially overlap each other in any of their positions. According to the invention, a drive mechanism is provided for the opening and closing of the window, which drive mechanism couples the window sections to each other in such a way that all of the window sections move simultaneously and at different speeds during the opening and closing, wherein a fixed ratio between the respective speeds of the window sections can be predetermined by design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.