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US 2014/0174774 A1Published application
Machine Tool
AssigneeDmg Mori Seiki Co., Ltd.
InventorsYoichi Okamoto, Eiichiro Gomi, Hiroki Nakao
Life of this patent
Estimating the term…
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.
Claims10
A machine tool comprising:
- a cover body with a window, the window including two transparent or translucent window plates which are airtightly coupled together, the two window plates being spaced by a predetermined distance to define a space therebetween, the space being set to a pressure other than atmospheric pressure;
- and
- an indicator having an indicating portion which is displaced in accordance with pressure disposed on or connected to the cover body so that the pressure in the space acts on the indicating portion and the indicating portion can be visually observed from the outside.
Dependencies are inferred from the claim text.