Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2004-11-12
2009-06-02
Hug, Eric (Department: 1791)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
C162S363000, C162S351000, C162S352000
Reexamination Certificate
active
07540943
ABSTRACT:
A cover for a vacuum dewatering box that is formed from a plurality of blocks, each including a wear surface, is provided. At least some of the blocks are spaced apart to form at least one generally longitudinally oriented slot through the cover, with a shape and size of the at least one slot being determined by at least one of a location of and a shape of the blocks. Preferably, the at least one slot is formed with a zig-zag or herringbone pattern, and can be used on a suction box or Uhle box on a papermaking machine. A vacuum dewatering box having this type of cover is also provided.
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AstenJohnson, Inc.
Hug Eric
Volpe and Koenig P.C.
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