Paper making and fiber liberation – Processes and products – Conditioning – preparing or repairing of apparatus
Reexamination Certificate
2006-06-13
2006-06-13
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes and products
Conditioning, preparing or repairing of apparatus
C162S205000, C162S358100, C162S361000, C100S160000, C100S168000, C100S176000, C101S092000, C101S484000
Reexamination Certificate
active
07060161
ABSTRACT:
There is provided a method for restraining deformation of a nip roll, in which polygonal deformation of nip rolls that are in contact with each other is restrained, so that vibration produced by the deformation is decreased.The diameter ratio between the first and second nip rolls1and2is set at a value different from 1, by which both of the numbers of polygon sides of the rolls1and2are prevented from becoming integers or values close to integers. Thereby, polygonal deformation of nip rolls that are in contact with each other, so that vibration produced by the deformation is decreased.
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patent: 6251207 (2001-06-01), Schultz et al.
patent: 6615709 (2003-09-01), Suomi et al.
patent: 6851356 (2005-02-01), Haag
Takahiro Ryu, et al., “Polygonal Deformation of Roll-Covering Rubber (In Case Viscoelastic Deformation of a Pair of Rolls is Taken into Account”, Transactions of the Japan Society of Mechanical Engineers (C Version), vol. 59, No. 567, Nov. 1993, pp. 3349-3356 (with English translation).
Hirooka Hideki
Miura Hiroshi
Nakano Kiyoshi
Ryu Takahiro
Sueoka Atsuo
Hug Eric
Mitsubishi Heavy Industries Ltd.
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