Machine tool
US9387563B2 · kind B2 · utility
1Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2013 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Mar 17, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q17/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine tool has a cover body with a window, the window including two spaced window plates defining an airtight space therebetween. The space is brought to a pressure other than atmospheric. An indicator is coupled to the cover body and has an indicator portion that is displaced in response to pressure in the space. The indicating portion is visually observable from outside the machine tool, so that the airtightness of the window may be determined by visually observing the position of the indicating portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.