Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2011-04-05
2011-04-05
Halpern, Mark (Department: 1741)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
C162S199000, C162S374000
Reexamination Certificate
active
07918969
ABSTRACT:
Dewatering blades for use in papermaking machines are assembled from two or more pre-finished sub-assemblies which are in turn mounted on a base member. Each sub-assembly comprises a holder, configured to receive a plurality of segments, constructed of a wear-resistant material such as ceramic, which will be located so as to be in sliding contact with the underside of a papermaking fabric. The holders are adapted for insertion into and retention in the base member, which is subsequently affixed to the papermaking machine by known means. The construction of the sub-assemblies allows for the manufacture of a full length blade from a plurality of sub-assemblies, which dramatically reduces manufacturing cost while providing for more rapid deliveries and simplified repair of damaged blades.
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AstenJohnson, Inc.
Halpern Mark
Volpe and Koenig P.C.
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