Extraction bedplate with laser or water jet cut apertures

Details Extraction bedplate with laser or water jet cut apertures Extraction bedplate with laser or water jet cut apertures

2002-07-18

2009-12-08

Halpern, Mark (Department: 1791)

Paper making and fiber liberation

Apparatus

With beating, refining, and/or disintegrating means

C100S104000, C162S028000, C162S055000, C241S024100, C241S046020

Reexamination Certificate

active

07628890

ABSTRACT:
The present invention relates to extraction bedplates (10), (110), (210), (310), (410), (510), (610) for use in apparatus (5) for defiberizing paper making stock and methods for making such bedplates. Preferred methods for making such bedplates (10), (110), (210), (310), (410), (510), (610) include the step of cutting a disc shaped blank from a metal plate and the step of forming holes (45), (145), (245), (345), (445), (545), (645), (646) either the metal plate or the disc shaped blank. The holes (45), (145), (245), (345), (445), (545), (645), (646) preferably are formed using a cutting stream, most preferably either a laser or a water jet. Use of a cutting stream to form the holes facilitates the cutting of holes (45), (145), (245), (345), (445), (545), (645), (646) having non-circular, and preferably tesselatory, cross sections as well as holes (45), (145), (245), (345), (445), (545), (645), (646) extending at acute angles with respect to an axis (20) of the bedplate.

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Letter to Applicants' Attorney (1 page).
Laico.com Web Pages (11 pages).
Waterjet-tech Web Pages (2 pages).
Waterjet.org Web Pages (5 pages).
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Slush Motor Advertisement (with handwritten notes) (1 page).
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Baracuda Pulping Unit Designs Advertisement (with handwritten notes) (1 page).
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