Patents Assigned to Voith Fabrics Heidenheim GmbH
  • Patent number: 7118651
    Abstract: A press felt comprises a base fabric, optionally with a batt of fibrous material needled thereto. The base fabric is woven endless, having upper and lower layers of weft yarns and first and second sets of warp yarns. The first set of warp yarns interweaves with at least the upper layer of wefts and the second set of warp yarns interweaves with at least the lower set of wefts. At least some of the first set of warps at least occasionally interweave with the lower wefts and at least some of the second set of warps at least occasionally interweaves with the upper wefts.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: October 10, 2006
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: William Daniel Aldrich
  • Patent number: 7105465
    Abstract: An industrial textile including a polymeric substrate and a resin system grafted onto the polymeric substrate by way of a primer. The resin system includes a water-borne thermoplastic, a polyhydroxyether resin and/or an analogue of a polyhydroxyether resin, and at least one co-resin.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: September 12, 2006
    Assignee: Voith Fabrics Heidenheim GmbH
    Inventors: Sanjay Patel, Michael David Draper
  • Patent number: 6998023
    Abstract: Papermachine clothing comprising a woven or non-woven support layer, a non-woven layer comprising ultra-coarse non-continuous fibers orientated close to the intended running directions of the clothing and two further layers of batt each comprising conventional somewhat finer staple fibers predominantly aligned close to the cross-machine direction. The ultra-coarse non-continuous fiber layer may comprise two such layers, one of which is biassed at an angle A to the running direction X of the clothing, the other of which is biased at an opposite angle B to the running direction X to provide a layer whose fibers while being substantially orientated in the machine direction also have a bi-axial construction with a cross-orientation.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: February 14, 2006
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: Robert L. Crook
  • Patent number: 6854488
    Abstract: A composite fabric comprising a paper side layer, a machine side layer and a plurality of pairs of first and second intrinsic, interchanging weft yarns having at least two segments in the paper side layer within each repeat of the weave pattern. Each layer comprises warp yarns and weft yarns woven together and having a predetermined repeat of the weave pattern in the cross-machine-direction. The first and second intrinsic, interchanging weft yarns in at least some of the plurality of pairs cooperating with each other to provide a discontinuous weft path in the paper side layer within each repeat of the weave pattern.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: February 15, 2005
    Assignee: Voith Fabrics Heidenheim GmbH & Co., KG
    Inventors: Stewart Lister Hay, Johann Boeck
  • Patent number: 6827821
    Abstract: A multilayer, woven fabric for use in a papermaking machine includes a self-sustaining top layer including a plurality of top machine direction yarns interwoven with a plurality of top cross-machine-direction yarns and a bottom layer including a plurality of bottom pairs of machine direction yarns interwoven with a plurality of bottom cross-machine-direction yarns. Each of the bottom cross-machine-direction yarns substantially vertically underlies a respective top cross-machine-direction yarn and each of the bottom pairs of machine direction yarns substantially vertically underlies a respective top machine direction yarn, with at least one of the machine direction yarns in at least some of the bottom pairs of machine direction yarns interweaving the bottom cross-machine-direction yarns to each other and to the top cross-machine-direction yarns of the top layer.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: December 7, 2004
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventors: James Loy Brewster, John M. Thomas, Jeffrey Bruce Herman, Stewart Lister Hay
  • Patent number: 6712940
    Abstract: A papermachine belt particularly for use in a press and/or dryer section comprises a support fabric, a minimal nonwoven layer on the support fabric, a fusible thermoplastic layer, and a thicker batt over the thermoplastic layer. The whole structure is needled together, and the thermoplastic layer melted so that it is expressed through the overlying batt. The layer may be substituted by a nonwoven fabric containing composite yarns with thermoplastic sheaths or such yarns wound spirally around the belt. The support fabric may be substituted by a perforated composite membrane.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: March 30, 2004
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: Robert L. Crook
  • Patent number: 6708732
    Abstract: A web forming fabric has a machine direction of intended movement on a web forming machine and a cross-machine direction substantially normal to the machine direction. The fabric includes machine direction yarns disposed generally in the machine direction and transverse yarns disposed generally transversely to the machine direction. The fabric includes first and second substantially linear arrays of systematically distributed areas of high drainage on one side thereof. These linear arrays are oriented at an acute angle to the machine direction and at an acute angle to each other. The boundaries of each of the systematically distributed areas are defined by two pairs of adjacent sides; the adjacent sides of one pair being angled segments of one transversely extending yarn and the adjacent sides of the other pair being angled segments of a second transversely extending yarn contiguous to the one transversely extending yarn.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 23, 2004
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventors: Stewart Lister Hay, Jeffrey Bruce Herman
  • Patent number: 6546964
    Abstract: A paper machine wire for dewatering and sheet forming purposes is structured such that the tendency of causing wire marks is decreased and simultaneously a greater wearing capacity is gained by exchangeably working threads. The multi-layer paper machine wire includes an upper fabric layer and a lower fabric layer with each layer being connected to one another by binding thread. The lower fabric includes a weft thread that extends from a running side of the lower fabric to a center position and overlaps a warp thread. The weft thread protects the warp thread against wear and forms a cushion against wire marking.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: April 15, 2003
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: Arved H. Westerkamp
  • Patent number: 6531418
    Abstract: Papermachine clothing comprises a base cloth consisting of a layer of woven fabric and/or a layer of thermoplastics material in mesh form. A batt fiber layer containing a non woven array of yarns extending in the intended machine direction of the papermachine clothing.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: March 11, 2003
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventors: Per-Ola Lidar, Goran Nohlgren, Jorgen Johansson
  • Patent number: 6530398
    Abstract: A multi-layer paper machine wire includes an upper fabric layer, a lower fabric layer and an additional layer disposed between the upper and lower fabric layers. The additional layer includes weft threads that alternate with binding threads. Warp threads of the upper fabric layer run over the weft threads of the additional layer and are interwoven with binding threads of the additional layer. Likewise, weft threads of the lower fabric layer run below the weft threads of the additional layer and are interwoven with binding threads of the additional layer.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: March 11, 2003
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: Arved H. Westerkamp
  • Patent number: 6511582
    Abstract: The invention relates to a paper machine wire for the wet end section of a paper machine, comprising a textile or non-texile fabric, especially a woven fabric, the one side of which is directed to the paper and the other, opposite side of which is directed to the paper machine, the one side of the fabric directed to the paper being at least partly covered by a fiber layer. The fiber layer is permanently compressed in some regions less intensively than in other regions.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: January 28, 2003
    Assignee: Voith Fabrics Heidenheim GmbH & Co., KG
    Inventor: Arved H. Westerkamp
  • Patent number: 6451412
    Abstract: A seam construction for a woven dryer fabric comprises a helical spiral or array of loops (43) stitched or woven into the fabric by means of loop engaging yarns (42) extending the machine direction of the fabric, the neutral plane (44) of the fabric being displaced towards the paper contacting side of the fabric, by reason of yarns (41) in the paper contacting side of the fabric being of smaller diameter than the yarns (40) on the machine side of the fabric, and a pair of cross-machine yarns (44, 45) of equal diameter being located as terminal yarns adjacent the loops (43).
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: September 17, 2002
    Assignee: Voith Fabrics Heidenheim GmbH & Co KG
    Inventor: David Holden
  • Patent number: 6436240
    Abstract: Papermachine clothing comprises a base fabric comprising at least two superimposed perforated non-woven membranes (11, 12), the upper or paper side one of which (11), has a lower maximum creep modulus and is less hard than the lower or machine side membrane (12).
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: August 20, 2002
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: John Jeffrey
  • Patent number: 6431221
    Abstract: A woven fabric comprises cross-machine direction weft yarns, and an array of interwoven warp yarns, the warp yarns being woven in the machine direction in alternating groups of relatively narrow yarns and relatively wide yarns. The narrow yarns are looped around a respective last weft yarn and backwoven, whilst the wider yarns are extended to form interdigitable loops for engagement of a pintle wire.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: August 13, 2002
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: David Wrigley
  • Patent number: 6314628
    Abstract: Apparatus for use in mounting and dismounting a warp beam, loaded with cannisters of warp thread onto or from a loom includes a trolley, with a hoverpad mounted under the trolley, and with a bracket carrying warp healds and reels. Trolleys may be combined, to carry two beams together, one trolley being arranged at the end of each beam, and the respective end trolleys being connected to the trolley in front of or behind it.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: November 13, 2001
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: George Crook
  • Patent number: 6294485
    Abstract: A papermakers dryer fabric is operable to carry a paper web on one face thereof. The fabric comprises a base substrate that is coated and optionally partially or fully impregnated with resin so as to yield a substrate having a substantially impermeable and preferably smooth surface on the paper carrying side of the fabric.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: September 25, 2001
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventors: Mark Hodson, Timothy Ashworth, Paul Myerscough
  • Patent number: 6241081
    Abstract: A seam arrangement for connecting the two ends of a fabric so as to form an endless belt, particularly for use in papermaking. The seam arrangement comprises two endless coils (10) which are respectively located at the free ends of the fabric and on interdigitation are brought into union by a pintle wire. Each loop of the coils (10) is secured by a “short” fabric loop (22) and a “long” fabric loop (18). The short fabric loop is located at the right hand side of the long fabric loop when looking up the fabric towards the seam.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: June 5, 2001
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventor: David Holden
  • Patent number: 6071837
    Abstract: A membrane felt for a tissue making process using a Yankee or MG cylinder the membrane felt comprising a polymeric matrix membrane layer (11) and a supporting base structure (12). The polymeric matrix optionally at least partially encapsulates parallel yarns extending it at least one direction. The supporting base structure is a textile substrate. These are secured together, preferably via a batt fibre layer which may be needled between the supporting base structure and membrane layer.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: June 6, 2000
    Assignee: Voith Fabrics Heidenheim GmbH & Co KG
    Inventor: Robert L. Crook