Sheet Or Web Contact Preventing By Spacer Sheets, Webs, Or Strands Patents (Class 34/94)
  • Patent number: 8789289
    Abstract: A method and apparatus for manufacturing a fiber web, in particular a web of tissue or hygiene material, provided with a three-dimensional surface structure, whereby the fiber web is pressed at a dry content of <35% onto an imprinting fabric by way of a first pressure field and is thereby pre-imprinted and the fiber web is guided through at least one other pressure field, and at least one of dewatering and drying the fiber web.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: July 29, 2014
    Assignee: Voith Patent GmbH
    Inventors: Jeffrey Herman, David A. Beck, Thomas Thoröe Scherb
  • Patent number: 7926199
    Abstract: A separator for separating stacked sheets of lumber or other building materials. The separator comprises a substantially planar top and bottom surface; the top and bottom surfaces extending substantially parallel to one another. The separator further comprises two side surfaces, each with outwardly protruding side edges for preventing the separator from resting on either side surface; and a front side and a back side substantially parallel to the front surface. A plurality of channels extend into the top and bottom surfaces with the channels defining a plateau, coexistent with the top and bottom surfaces, between adjacent channels. Each channel has one or more apertures for creating a substantially vertical airflow passage between top and bottom surfaces of the separator.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: April 19, 2011
    Assignee: SmartStix, LLC
    Inventor: James F. Aaron
  • Patent number: 6916405
    Abstract: Process and apparatus for drying a material web. The process includes guiding the material web to at least one heated area having a jacket surface of a cylinder having a diameter of between about 4-10 meters, setting the material web, having a dry content of between about 45-55%, onto the at least one heated area, maintaining the material web in uninterrupted contact with the at least one heated area at least until the material web achieves a firmness sufficient for detaching the material web from the heated area, and detaching the material web from the at least one heated area with a dry content of between about 55%-65%.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: July 12, 2005
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Robert Wolf, Markus Oechsle, Wolfgang Mayer, Thomas Mack, Roland Mayer
  • Publication number: 20030154622
    Abstract: A lumber sticker for separating lumber, comprised of an elongated rectangular shaped block with generally rounded-off sides. The lumber sticker has channels cut into the top and bottom surfaces, traversing the width at substantially a diagonal. The channels are cut in an arcuate concave shape or a V-shape, and in one embodiment, the channels are cut at 45 degree angles relative to the lengths of the surfaces such that the channels of the top surface are perpendicular to the channels of the bottom surface. In yet another embodiment, the deepest point of each channel is at the midpoint of each channel. The point of contact between the lumber sticker and the wood panels is a substantially flat plateau between each channel.
    Type: Application
    Filed: February 18, 2003
    Publication date: August 21, 2003
    Inventor: James F. Aaron
  • Publication number: 20030079364
    Abstract: The trays (V) are provided with identical vertical spacers (4) which enable the trays to be stacked on top of each other in a centred way, with a suitable spacing betweem them, and enable the various adjacent stacks of trays to be raised and lowered in steps, by means (BM) which act only on the bottom tray of each stack. The sides of the stacks of trays of the kiln are thus free and can be engaged by conveyors (37-37′, 77-77′, 57-57′) of the means provided for the translation of the trays between the stacks, both in the normal operating cycle and in the short operating cycle. However, the lower translation conveyors (24-24′) which transfer the trays from the stack with the unloading station (K2) to that with the loading station (K1) are positioned in the usual way under the stacks of trays and transversely with respect to the trays.
    Type: Application
    Filed: September 23, 2002
    Publication date: May 1, 2003
    Inventors: Luigi Franzoni, Valdo Marini
  • Patent number: 6523278
    Abstract: The invention concerns a dryer section, comprising at least one dryer group (R) that makes use of single-wire draw and/or twin-wire draw and at least one suction roll (10) with which the web (W) to be dried is in direct contact. The surface construction of the suction roll (10) is of a fine structure so that the web (W) can be passed to run over the suction roll (10) in direct contact with the roll so that the web (W) is not damaged.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: February 25, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Laurie Coulson, Kari Juppi, Jaakko Kallioniemi, Pekka Koivukunnas, Antti Komulainen, Juha Lipponen, Petri Norri
  • Patent number: 6490811
    Abstract: A drying section for drying and controlling shrinkage of a moist fiber web in a paper making machine is provided, the web having a predetermined width and opposed transverse ends. Such a drying section comprises a plurality of drying section members configured to receive and forward the web in a machine direction. Each drying section member has opposed ends in a transverse direction. The drying section members further comprise a first drying section member and a second drying section member, with the second drying section member being separated from the first drying section member so as to define an intermediate zone therebetween. The drying section further comprises a primary belt set having a belt member wrapping about each of the opposed ends of each of the drying section members. Each belt member is configured in an endless loop and has a width less than half of the width of the web.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: December 10, 2002
    Assignee: Metso Paper Karlstad AB
    Inventor: Torbjörn Wahlström
  • Patent number: 6482295
    Abstract: Process and apparatus for drying a material web. The process includes guiding the material web to at least one heated area, maintaining the material web in uninterrupted contact with the at least one heated area at least until the material web achieves a firmness sufficient for detaching the material web from the heated area. The apparatus includes at least one heated area arranged to receive the material web. The at least one heated area includes a removal zone arranged for the removal of the material web from the at least one heated area. The at least one heated area has a length is sufficient to achieve a sufficient firmness of the material web to be removed in the removal zone.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: November 19, 2002
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Robert Wolf, Markus Oechsle, Wolfgang Mayer, Thomas Mack, Roland Mayer
  • Patent number: 6442868
    Abstract: A drying cylinder for drying a fibrous web, the cylinder having an inner chamber connected to a pressurized air source; and an outer cylinder jacket having an air-permeable region which is adapted to contact the fibrous material web. Also a drying section for drying a fibrous web, including at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air-permeable region; a circulating belt arranged to press the fibrous web against the outer cylinder jacket and belt being arranged to partially wrap around the drying cylinder; and a pressurized air source connected to the inner chamber is described.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: September 3, 2002
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Robert Wolf, Markus Oechsle, Wolfgang Mayer, Thomas Mack, Roland Mayer
  • Patent number: 6397493
    Abstract: An apparatus for at least one of producing and treating a material web is provided including at least one wire; an outer sealing belt, which is wider than said at least one wire, comprising a pair of lateral edge regions; at least one heatable unit, having an outer cylindrical surface, wherein said at least one wire and said outer sealing belt are at least partially wrapped around said at least one heatable unit; an overpressure cap arranged to form a pressure chamber containing a medium under pressure, said medium under pressure exerting a pressure on said at least one heatable unit; and at least one of: (a) a seal formed between said lateral edge regions and said heatable unit; and (b) a seal formed between end faces of said overpressure cap and an opposing wall to seal said pressure chamber from an external environment.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: June 4, 2002
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Günter Halmschlager, Walter Holzer, Manfred Gloser, Peter Haslinger
  • Patent number: 6134803
    Abstract: The instant device is an elongated four-sided, solid high molecular weight polyethylene wood sticker unit serving to separate, within a wood kiln unit, the lowermost surfaces of uppermost laid in planking from the uppermost surfaces of lowermost laid-in planking and characterized by the presence of four rounded edges marking the intersection of any two sides thereof and a helically inclined groove cut into the outer surfaces of all four sides thereof and extending uniformly from one end thereof to the other end thereof.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: October 24, 2000
    Inventors: Maurice H. Gilchrist, Peter W. Sheehan
  • Patent number: 5813137
    Abstract: This invention relates to an improved separator, commonly referred to as a "lath", "stick", "sticker", or "crosser", that is used in the lumber industry to separate pieces of lumber in a stack or bundle. The separator features, in one embodiment, a plurality of grooves extending transverse to the length of the separator to permit air circulation within the grooves, and a plurality of ridges between the grooves to support the pieces of lumber. In another embodiment, a second plurality of grooves extending transverse to the length of the separator and the first grooves to form a cross-hatching of grooves to permit air circulation within the grooves, and a plurality of protrusions to support the pieces of lumber over the grooves.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: September 29, 1998
    Assignee: Breeze Dried, Inc.
    Inventor: David M. Townsend
  • Patent number: 5704134
    Abstract: A rack assembly for drying short lumber pieces is provided. The rack assembly includes unitary racks for supporting each tier of lumber pieces in a stack. Each rack includes transverse stickers to separate it from the preceding tier and a number of longitudinal tracks to guide the placement of the short lumber pieces. The pieces are arranged end-to-end in rows extending the length of the rack and the rows are arranged side-by-side across the width of the rack. A method of using such a rack to facilitate the drying of lumber is also provided.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: January 6, 1998
    Assignee: Carter Sprague Inc.
    Inventors: John L. Carter, Everett C. Davidson, Larry C. Lagging
  • Patent number: 5345695
    Abstract: Pieces of wood to be dried are stacked in an oven with a space provided between horizontal layers of the wood to permit air flow between the pieces of wood. Means providing the spacing are channel-shaped, non-moisture absorbing strips of metal or plastic approximately 3/4 inch square. The air for drying the wood will travel down the channel of the strips to help in the drying of the wood.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: September 13, 1994
    Assignee: Armstrong World Industries, Inc.
    Inventor: Auston B. Graham
  • Patent number: 4719707
    Abstract: The conveying apparatus for a flat article, particularly a cardboard blank, paper sheet or the like, comprises two driven endless belts running over guides positioned opposing each other between which the article is clamped during transport. The endless belts are guided on base surfaces of beds of the guides having a wavelike longitudinal cross section in the conveying direction with a plurality of wave troughs and peaks. A plurality of lateral supporting members are attached to each of the beds. The wave crests of one of the guides are positioned staggered with respect to the wave crests of the other guide and opposing the wave troughs of the other guide. Furthermore the endless belts are either elastic in the conveying direction or a tension provider is mounted engaging each of the endless belts.
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: January 19, 1988
    Assignee: Jagenberg Aktiengesellschaft
    Inventor: Hartmut Klapp
  • Patent number: 4570651
    Abstract: An elongated cylindrical housing supports a comb structure on one end and an air nozzle on the other. A reversible electrically driven fan is supported within the housing and produces an air flow through the comb, the housing and the nozzle in either direction. Means are provided for heating the air passing through the housing and the comb.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: February 18, 1986
    Inventor: Charles R. Adams
  • Patent number: 4461095
    Abstract: A method of continuous drying of a paper or other porous web by passing the web (3) by means of a drying felt or wire (4) between two moving, air-impermeable surface elements (1, 8) having good heat conducting properties, which elements enclose the web along its whole width. The surface element (1) contacting the web is heated and the surface element (8) contacting the wire is cooled for evaporating water present in the web and condensing the evaporated water into the felt or wire. The temperature of the liquid used for cooling the surface element to be cooled is maintained above 100.degree. C. and the pressure at least at such a level as to prevent the liquid from boiling. Thus, the drying of the web can be carried out at an elevated temperature and under an elevated pressure in a continuous process at production conditions for improving the web characteristics.Preferably the cooling liquid is maintained at different temperatures and/or under different pressures at separate steps of the cooling process.
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: July 24, 1984
    Assignee: Oy Tampella A.B.
    Inventor: Jukka A. Lehtinen
  • Patent number: 4194298
    Abstract: A method of air drying of refractory hardwoods which reduces the surface checking and splitting of such wood by utilizing articles consisting of hygroscopic sheets and spacing means which are, in turn, alternately layered with boards of lumber.
    Type: Grant
    Filed: June 2, 1978
    Date of Patent: March 25, 1980
    Assignee: Research Triangle Institute
    Inventor: C. Arthur Hart
  • Patent number: RE38118
    Abstract: This invention relates to an improved separator, commonly referred to as a “lath”, “stick”, “sticker”, or “crosser”, that is used in the lumber industry to separate pieces of lumber in a stack or bundle. The separator features, in one embodiment, a plurality of grooves extending transverse to the length of the separator to permit air circulation within the grooves, and a plurality of ridges between the grooves to support the pieces of lumber. In another embodiment, a second plurality of grooves extending transverse to the length of the separator and the first groove to form a cross-hatching of grooves to permit air circulation within the grooves, and a plurality of protrusions to support the pieces of lumber over the grooves.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: May 13, 2003
    Assignee: Breeze Dried, Inc.
    Inventor: David M. Townsend