Paper making and fiber liberation – Apparatus – Measuring – testing – inspecting – indicating or illuminating
Reexamination Certificate
2006-09-19
2006-09-19
Chin, Peter (Department: 1731)
Paper making and fiber liberation
Apparatus
Measuring, testing, inspecting, indicating or illuminating
C162S111000, C162S198000, C162S281000
Reexamination Certificate
active
07108766
ABSTRACT:
A doctor unit in a paper machine includes a blade carrier having a blade holder fitted to the blade carrier. A doctor blade is mountable in the blade holder to doctor a roll or similar moving surface. The blade holder and/or doctor blade include one or more sensors installed inside the construction or on its surface. The sensors are arranged to measure the wear of and/or stress in the blade holder and/or doctor blade.
REFERENCES:
patent: 5081951 (1992-01-01), Most et al.
patent: 5189492 (1993-02-01), Sollinger et al.
patent: 5221351 (1993-06-01), Esser et al.
patent: 6830659 (2004-12-01), Sovijarvi
patent: 3825415 (1990-12-01), None
patent: 19743279 (1999-04-01), None
patent: 0426980 (1990-05-01), None
Eskelinen Ilkka
Rata Ilkka
Ruotsalainen Harri
Samppala Jukka
Toivanen Heikki
Chin Peter
Fildes & Outland, P.C.
Metso Paper Inc.
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