Extraction bedplate with laser or water jet cut apertures
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21B-001/32
D21B-001/00
출원번호
UP-0466308
(2002-07-18)
등록번호
US-7628890
(2009-12-16)
국제출원번호
PCT/US02/022872
(2002-07-18)
§371/§102 date
20041012
(20041012)
국제공개번호
WO03/033152
(2003-04-24)
발명자
/ 주소
Chupka, David E.
Demler, Christopher L.
출원인 / 주소
Kadant Black Clawson Inc.
대리인 / 주소
Wegman, Hessler & Vanderburg
인용정보
피인용 횟수 :
4인용 특허 :
17
초록▼
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 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.
대표청구항▼
What is claimed is: 1. A pulper extraction bedplate for use in defiberizing stock for making paper, comprising: a plate defining first and second planar surfaces; and a plurality of holes extending from said first surface to said second planar surface, said holes having substantially rhombic cross
What is claimed is: 1. A pulper extraction bedplate for use in defiberizing stock for making paper, comprising: a plate defining first and second planar surfaces; and a plurality of holes extending from said first surface to said second planar surface, said holes having substantially rhombic cross sections and permitting passage of defiberized stock therethrough. 2. A pulper extraction bedplate as recited in claim 1, wherein said plate defines an axis normal to said first and second surfaces and wherein said holes extend at an acute angle with respect to said axis. 3. A pulper extraction bedplate for use in defiberizing stock for making paper, comprising: a plate defining first and second surfaces; and a plurality of holes extending from said first surface to said second surface, said holes having substantially rhombic cross sections and being arranged along arcs coincident with stock flow lines immediately above the first surface of said bedplate and permitting passage of defiberized stock therethrough. 4. A pulper extraction bedplate for use in defiberizing stock for making paper comprising: a plate defining first and second surfaces; and a plurality of holes extending from said first surface to said second surface, wherein said plate defines a central axis normal to said first and second surfaces; said holes being arranged along arcs coincident with anticipated stock flow lines immediately above the first surface of said bedplate; and said holes extending through said bedplate at an acute angle along said anticipated stock flow lines so as to define relatively sharp downstream edges facing said anticipated flow lines, wherein said holes have substantially rhombic cross sections and permit passage of defiberized stock therethrough. 5. A pulper extraction bedplate as recited in claim 4 wherein said rhombic shaped holes comprise major diagonal directions and minor diagonal directions with said major diagonal directions extending generally radially relative to said central axis. 6. A pulper extraction bedplate as recited in claim 4 wherein said rhombic shaped holes comprise an upstream surface and a downstream surface located along said first surface of said plate, said downstream surface comprising a pair of straight edges angularly connected to each other at a vertex. 7. A pulper extraction bedplate for use in defiberizing stock for making paper comprising: a plate defining first and second surfaces; and a plurality of holes extending from said first surface to said second surface, said hole each further having an upstream surface and a downstream surface located along said first surface of said plate, said downstream surface comprising a pair of straight edges angularly connected to each other at a vertex, wherein said holes have a substantially rhombic shaped cross section and permit passage of defiberized stock therethrough. 8. A pulper extraction plate bedplate as recited in claim 7 wherein said plate comprises a central axis extending perpendicularly through said first and second surfaces and wherein said rhombic shaped cross section holes each comprise a major diagonal direction and a minor diagonal direction with said major diagonal direction extending generally radially relative to said central axis.
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이 특허에 인용된 특허 (17)
Chupka David E. (Middletown OH), Apparatus for pulping high consistency paper making stock.
Clark Llewellyn E. (Pittsfield MA) Matthew John B. (Pittsfield MA) Nunn Bruce E. (Middlefield MA), Method and apparatus for pulping and grading waste material.
Doelle Klaus ; Lorenz Kurt William ; Wickesberg Steve Richard, Pulper with extraction plate assembly having removable inserts and method of manufacturing same.
Chupka David E. (Middletown OH) Constiner Joseph P. (Monroe OH) Vitori Christopher M. (Middletown OH), Seamless screen cylinder with laser cut openings.
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