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Class Information
Number: 162/317
Name: Paper making and fiber liberation > Apparatus > Running or indefinite length product forming and/or treating means > Means directing stock into contact with molding surface > Confined stock stream on forming surface (e.g., pressure forming)
Description: Apparatus in which the means directing the stock into contact with the forming surface is a closed conduit completely embracing the stock slurry and is in sealing contact with the foraminous forming surface.

Patents under this class:

Patent Number Title Of Patent Date Issued
7494570 Apparatus in a paper or cardboard machine for confining the pulp flow from the headbox Feb. 24, 2009
6342125 Multi-ply web forming method and apparatus and a multi-ply paper or board product formed hereby Jan. 29, 2002
6146500 Suction breast roll former and method, with flexible headbox roof Nov. 14, 2000
6139690 Former with a floating upper lip Oct. 31, 2000
6106669 Process for thickening a fibrous pulp suspension Aug. 22, 2000
5766419 Twin-wire gap former in a paper machine Jun. 16, 1998
5591336 Apparatus for dewatering and or washing papermaking stock Jan. 7, 1997
5571383 Method and device for transverse distribution of a flowing medium Nov. 5, 1996
5384014 Apparatus and method for thickening pulp and paper stock Jan. 24, 1995
5382327 Apparatus for thickening pulp and paper stock Jan. 17, 1995
5160584 High consistency sheet former Nov. 3, 1992
5160583 Controlled jet injection apparatus for a papermaking machine headbox Nov. 3, 1992
4999088 No-box system with booster head spray for delivering paper stock to a paper machine Mar. 12, 1991
4995988 Method and apparatus for thickening a slurry using a compression plate Feb. 26, 1991
4784725 Vat paper machine Nov. 15, 1988
4717453 Web forming device with rigid concave/convex pressure plate Jan. 5, 1988
4662992 Twin-wire papermaking machine and method of dewatering a paper web in a twin-wire papermaking machine May. 5, 1987
4576681 Machine for making a fiber web with sharply defined edges Mar. 18, 1986
4490212 Papermaking machine with central dewatering cylinder Dec. 25, 1984
4445974 Apparatus for forming a multilayer jet of paper making stock May. 1, 1984
4443299 Apparatus and method for the manufacture of a non-woven fibrous web Apr. 17, 1984
4430159 Twin-wire papermaking machine Feb. 7, 1984
4361467 Headbox for a papermaking machine Nov. 30, 1982
4308097 Former for producing a paper web Dec. 29, 1981
4260492 Rotary diaphragm press Apr. 7, 1981
4234382 Former for a paper machine Nov. 18, 1980
4216056 Paper machine having a water extraction box extension Aug. 5, 1980
4161205 Method and apparatus for plybonding control Jul. 17, 1979
4158596 Traveling wire web former Jun. 19, 1979
4154649 Pulp feed for a paper making machine May. 15, 1979
4146426 Apparatus for the manufacture of paper and board Mar. 27, 1979
4146425 Papermaking machine headbox having a feed channel and an adjacent overflow sump Mar. 27, 1979
4125429 Headbox turbulence generator and damping sheet Nov. 14, 1978
4124441 Sheet forming apparatus including edge seals for forming wires Nov. 7, 1978
4101374 Dewatering device including a drum with radially slanted cells Jul. 18, 1978
4098642 Pressure pulp washer with inlet pivot Jul. 4, 1978
4085003 Pressure pulp washer with pivoted baffle Apr. 18, 1978
4083750 Flowbox with convergent wall portions Apr. 11, 1978
4050499 Head box for cylinder molds having a flexible lid element Sep. 27, 1977
4028175 Cylinder machine having positive pressure chambers adjacent an outer band Jun. 7, 1977
4024016 Cylinder mold former with flow box and pressure lid May. 17, 1977
4024015 Web-forming method and apparatus May. 17, 1977
4014738 Sifting drum paper machine wherein the diluent water is controlled Mar. 29, 1977
4004968 Consecutive multi-ply formers with an unencumbered doffer felt Jan. 25, 1977
3993537 Method of regulating a paper machine Nov. 23, 1976

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