Paper making and fiber liberation – Processes and products – Conditioning – preparing or repairing of apparatus
Reexamination Certificate
2007-11-27
2007-11-27
Halpern, Mark (Department: 1731)
Paper making and fiber liberation
Processes and products
Conditioning, preparing or repairing of apparatus
C162S198000, C162SDIG010, C100S16200R, C100S15500G
Reexamination Certificate
active
10467426
ABSTRACT:
The invention relates to a method for controlling the operation of a paper, board or tissue production line (11, 12, 13, 14, 17, 18). A magneto-rheological or an electrolrheological fluid, whose flow characteristics are changed in a controlled way, is used in the method. The fluid is used as a lubricant between surfaces in a device consisting of a fixed surface and a surface that is moved over it as a heating medium, as the dampening or the power transmission agent of the movement of paper and/or board equipment (17, 18), or as a hydraulic fluid of the emergency opening cylinders of a set of calender rolls (1) of a paper and/or board machine.
REFERENCES:
patent: 5961899 (1999-10-01), Rossetti et al.
patent: 6257133 (2001-07-01), Anderson
patent: 79571 (1989-09-01), None
patent: 105115 (2000-06-01), None
patent: WO 02/064886 (2002-08-01), None
“Properties and Applications of Commercial Magnetorheological Fluids”, by Mark R. Jolly, Jonathon W. Bender and J. David Carlson, SPIE 5thAnnual Int. Symposium on Smart Structures and Materials, San Diego, CA, Mar. 15, 1998.
“Electro- and Magnetorheological Fluids. Part 1. ; Fundamentals”, Kimmo K. Mäkelä, Tribologia Finnish Journal of Tribology, vol. 15/1996.
International Preliminary Examination Report issued in PCT/FI02/00094, Oct. 2002.
International Search Report issued in PCT/FI02/00094, Aug. 2002.
Halpern Mark
Metso Paper Inc.
Stiennon & Stiennon
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