Patent · US Expired

System for registration of a fluid level in a receptacle

US6554381B2 · kind B2 · utility

128Cited by

3References

58Claims

0Family size

Assignee

Pelikan Produktions AG · CH

Inventors

Philippe Georges Locher · Liestal, CH
Markus Burgin · Spreitenbach, CH
Joachim Kretschmer · Rüti, CH

Key dates

Filing date	Apr 17, 2001
Grant date	Apr 29, 2003
Priority date	—
Expiry date	Apr 17, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2002/17576
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A system is provided for registration of a fluid level of a fluid in the fluid chamber of an invention-specific receptacle (1), in particular of ink in an ink cartridge, with a light source (11) which beams into the chamber of the receptacle, a reflection body (2) which is designed as a float, which moves in the chamber of the receptacle in dependency upon the filling level of the fluid and which variably reflects the light in dependency upon its movement, and a light detector (10) which receives a variable amount of light.

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