Patent · US Active

Position device in gantry type of construction

US8040099B2 · kind B2 · utility

8Cited by

3References

8Claims

0Family size

Assignee

ETEL S.A. · CH

Inventors

Ralph Coleman · Fleurier, CH
Laurent Heiniger · Neuchâtel, CH

Key dates

Filing date	May 11, 2007
Grant date	Oct 18, 2011
Priority date	—
Expiry date	Apr 20, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/308288
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a positioning device in gantry type of construction, due to a special arrangement of the position-measuring devices used for the positioning, errors due to thermal expansion of the positioning device may be avoided to a great extent. In particular, attention is given to the advantageous placement of fixed point of a scale relative to a straightness track of a further scale.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.