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Class Information
Number: 162/246
Name: Paper making and fiber liberation > Apparatus > Digester > Charging and/or discharging means (including blow pits)
Description: Apparatus in which the body of the digester structure is provided with means to permit the introduction of the stock material to be digested, or the delivery of the material after treatment within the digester.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7452444 |
Digester wash extraction by individual screen flow control |
Nov. 18, 2008 |
| 7387708 |
Process for feeding pulp into a blow tank or storage tank |
Jun. 17, 2008 |
| 7381302 |
Method and arrangement for impregnating chips |
Jun. 3, 2008 |
| 7309401 |
Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester |
Dec. 18, 2007 |
| 7285179 |
Continuous digester for cellulose pulp including method and recirculation system for such digester |
Oct. 23, 2007 |
| 7229524 |
Feeding arrangement for feeding of chips to chip bins |
Jun. 12, 2007 |
| 7229526 |
Method and apparatus for the feeding of fibers |
Jun. 12, 2007 |
| 7105076 |
Gas phase continuous digester having an inverted top separator with liquor injection |
Sep. 12, 2006 |
| 7060162 |
Chip bin |
Jun. 13, 2006 |
| 7001483 |
Apparatus for making carboxylated pulp fibers |
Feb. 21, 2006 |
| 6958109 |
Process for feeding pulp into a blow tank or storage tank |
Oct. 25, 2005 |
| 6841042 |
Feeding comminuted fibrous material using high pressure screw and centrifugal pumps |
Jan. 11, 2005 |
| 6719878 |
Method for avoiding mechanical damage of pulp |
Apr. 13, 2004 |
| 6673201 |
Top separator with intraseal for digester vessel in a pulp or fiber processing system |
Jan. 6, 2004 |
| 6589391 |
Top separator with intraseal for digester vessel in a pulp or fiber processing system |
Jul. 8, 2003 |
| 6569289 |
Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkali |
May. 27, 2003 |
| 6551462 |
System for feeding comminuted fibrous material |
Apr. 22, 2003 |
| 6506283 |
Pretreatment of chips before cooking |
Jan. 14, 2003 |
| 6497791 |
Apparatus for pre-treatment of wood chips |
Dec. 24, 2002 |
| 6491188 |
Revolver valve for discharging a pressurized vessel in a fiber stock preparation system |
Dec. 10, 2002 |
| 6451165 |
Channel pulper |
Sep. 17, 2002 |
| 6451172 |
In-line drainer enhancements |
Sep. 17, 2002 |
| 6447645 |
Feeding cellulose material to a treatment vessel |
Sep. 10, 2002 |
| 6436233 |
Feeding cellulose material to a treatment vessel |
Aug. 20, 2002 |
| 6432264 |
Method of making a vessel assembly for handling comminuted cellulosic fibrous material |
Aug. 13, 2002 |
| 6418963 |
Pipe attachment |
Jul. 16, 2002 |
| 6379504 |
Apparatus for pulping sawdust |
Apr. 30, 2002 |
| 6375795 |
Minimization of malodorous gas release from a cellulose pulp mill feed system |
Apr. 23, 2002 |
| 6368453 |
Chip feeding to a comminuted cellulosic fibrous material treatment vessel |
Apr. 9, 2002 |
| 6340409 |
Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release |
Jan. 22, 2002 |
| 6332542 |
Tramp material removal from pulp feed system |
Dec. 25, 2001 |
| 6315128 |
Tramp material removal from pulp feed systems |
Nov. 13, 2001 |
| 6284095 |
Minimization of malodorous gas release from a cellulose pulp mill feed system |
Sep. 4, 2001 |
| 6280575 |
Frusto-conical outlet for a cellulose material treatment vessel |
Aug. 28, 2001 |
| 6267847 |
Pulper for a stock preparation system |
Jul. 31, 2001 |
| 6210532 |
Means for conveying pulp having differential pressure control |
Apr. 3, 2001 |
| 6210533 |
Revolver valve for discharging a pressurized vessel in a fiber stock preparation system |
Apr. 3, 2001 |
| 6174411 |
Continuous digester with inverted top separator |
Jan. 16, 2001 |
| 6143134 |
Chip spreader for air-lock feeder |
Nov. 7, 2000 |
| 6120646 |
Feeding system of feeding a cellulose material |
Sep. 19, 2000 |
| 6109312 |
Air evacuation insert for wood chip digester |
Aug. 29, 2000 |
| 6098658 |
Method and apparatus for filling a pulp tower |
Aug. 8, 2000 |
| 6096170 |
Pressurized peroxide bleaching vessel having a rotatable scraper arm and cleaning device |
Aug. 1, 2000 |
| 6086717 |
Separator having a screen basket disposed in a digester |
Jul. 11, 2000 |
| 6076956 |
Device for distributing suspensions in a container |
Jun. 20, 2000 |
| 6051109 |
Apparatus for distributing fluffed pulp into a static bed reactor |
Apr. 18, 2000 |
| 6024837 |
Low temperature gas phase continuous digester |
Feb. 15, 2000 |
| 6024227 |
Tramp material removal from pulp feed systems |
Feb. 15, 2000 |
| 5985096 |
Vertical pulping digester having substantially constant diameter |
Nov. 16, 1999 |
| 5968314 |
Chip feeding for a digester |
Oct. 19, 1999 |
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