Filled Honeycomb Cells (e.g., Solid Substance In Cavities, Etc.) Patents (Class 428/117)
  • Publication number: 20090087613
    Abstract: Disclosed are ceramic honeycomb articles which are composed predominately of a crystalline phase cordierite composition. The porous cordierite ceramic honeycomb articles has a plurality of cell channels and intersecting porous walls and possess a microstructure characterized by a pore size distribution wherein greater than or equal to 75% of the pore size distribution of the porosity of the porous walls, by volume, have a pore diameter (dv) wherein dv<10.0 ?m and less than or equal to 35% of the pore size distribution have dv?4.0 ?m. Additionally, the pore diameter dv90?14.0 ?m, and CTE?12.0×10?7/° C. from 25° C. to 800° C. The articles exhibits high filtration efficiency coupled with low pressure drop across the filter. Additionally, high porosity articles having porosity greater than or equal to 40% and low surface roughness of Ra<4.0 ?m are described.
    Type: Application
    Filed: August 27, 2008
    Publication date: April 2, 2009
    Inventors: Yanxia Lu, Jennifer Lynn Lyon, Jianguo Wang, John Forrest Wight, JR., Yuming Xie
  • Patent number: 7510757
    Abstract: A cellular composite structure includes a grid having groups of angularly intersecting ribs. The ribs of each group are oriented substantially in the same direction to each other and angularly oriented from the other rib groups. An additional rib defines a composite structure outer perimeter wall and can be differently angularly oriented from the other ribs. A contiguous rib wall is created by segments of ribs defined by rib intersections. The contiguous rib wall bounds a cavity. A multilayer sheet cap member with extending walls to engage the contiguous rib wall is positioned within the cavity. The engagement walls extend from individual sheet perimeter portions angularly oriented to the sheet. The ribs and cap member have pre-impregnated resin. Heating the cap member and ribs activates the resin and co-cures the composite structure.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: March 31, 2009
    Assignee: The Boeing Company
    Inventors: Shin S Lee, Barry P VanWest
  • Patent number: 7507460
    Abstract: There is disclosed a plugged honeycomb structure 1 having: partition walls 2 arranged in such a manner as to form a plurality of cells 3 extending from one end face 42 to the other end face 44 through an axial direction; an outer peripheral wall 7 which surrounds an outer periphery of the partition wall 2; and plugging portions 4a, 4b disposed in such a manner as to plug the cell 3 in either end face 42, 44. In the plugged honeycomb structure 1, at least some of plugging portions 4a arranged in at least the vicinity of the outer peripheral wall protrude from the end face 42 or 44. Alternatively, there are provided a plugged honeycomb structure 1 in which a tip of the protruding portion 4a is substantially flat or has a moderate curved face, and a method of manufacturing the structure. The plugged honeycomb structure 1 does not easily break, is capable of enhancing durability, and is preferably usable in a filter such as a diesel particulate filter (DPF).
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: March 24, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihito Ichikawa, Mitsuru Miyamoto, Shinya Mori
  • Patent number: 7504146
    Abstract: A hexagonal cell honeycomb structure body has a plurality of hexagonal cells. Each hexagonal cell is surrounded by six cell walls in a hexagonal lattice shape. A R-shaped corner part of an approximate circular-arc shape is alternately formed at interior angle parts of the six cell walls forming each hexagonal cell. The three R-shaped corner parts are at the alternate internal corners of each hexagonal cell observed from a cross section of the axis direction of the hexagonal cell honeycomb structure body. A radius of curvature of each R-shaped corner part is larger than that of the interior corner part having no R-shaped corner part. The minimum radius of curvature of the R-shaped corner part is 2.8 to 5 times of a thickness of each hexagonal cell wall, namely within a range of 0.25 mm to 0.45 mm.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 17, 2009
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiyasu Ando, Toshiharu Kondo, Tatsuji Mizuno
  • Publication number: 20090044475
    Abstract: An energy-attenuation structure comprising a core layer of cellular material. Substantially most of the cells of the cellular material are open cells, with those cells disposed in the central portion of the core layer being more open than are those cells disposed in outer portions of the core layer. The openness of the cells generally decreases from the interior of the core layer in a direction toward the outer portions. At least some of the cells of the core layer are filled with a liquid.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 19, 2009
    Inventor: Ashok Kumar Ghosh
  • Patent number: 7491373
    Abstract: A system and method including a radially non-uniformly plugged flow-through honeycomb substrate positioned upstream of a wall-flow particulate filter for controlled thermal regeneration of the wall-flow particulate filter, the flow-through honeycomb substrate having a flow-through region including a first portion of parallel channels and a flow-control region including a second portion of parallel channels, the first portion of the parallel channels including unplugged channels and the second portion of the parallel channels including plugged channels, with the flow-control region adjusting flow distribution through the flow-through honeycomb substrate.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: February 17, 2009
    Assignee: Corning Incorporated
    Inventors: Thomas Dale Ketcham, Yuming Xie
  • Publication number: 20090011180
    Abstract: There is disclosed a plugged honeycomb structure manufacturing method capable of easily manufacturing a plugged honeycomb structure for use in a filter or the like at low costs so that deposits disposed on an end surface of the structure are reduced, a uniform plugging depth is achieved and especially the plugging depth of a slurry-like plugging material at an outer peripheral portion of the honeycomb structure is easily made uniform.
    Type: Application
    Filed: September 15, 2008
    Publication date: January 8, 2009
    Applicant: NGK INSULATORS, LTD.
    Inventor: Yukihito ICHIKAWA
  • Patent number: 7452585
    Abstract: An article of manufacture comprising a sag-resistant nucleus-forming monolithic composite capable of being located within a hollow interior portion of a structural material and being expanded therein. Also, articles of manufacture comprising open-cellular structural material containing within the open-cell or cell thereof, at least one sag-resistant nucleus-forming monolithic composite. The composite is desirably in the shape of a plug that is similar or close to similar to the shape of the hollow interior. In addition, there is described a process that comprises forming a pre-shaped sag-resistant nucleus-forming monolithic composite for use in reinforcing and stiffening a normally open-cellular structural material. Also described is a process for reinforcing or stiffening a normally open-cellular structure, any tubular structure, or any channel structure, by putting at least one sag-resistant nucleus-forming monolithic composite within a hollow interior portion of the structure.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: November 18, 2008
    Assignee: Henkel Corporation
    Inventors: Raymond S. Wong, Stanley L. Lehmann, Wei Helen Li
  • Patent number: 7442425
    Abstract: A ceramic honeycomb substrate for use in an automotive catalytic converter system which exhibits improved light-off performance by virtue of a high porosity of 45 to 75% while still maintaining a wall thickness of greater than 2.0 mil (0.0020 inch, 0.0508 mm), preferably 2.5 mil (0.0025 in., 0.0635 mm) to 7 mil (0.0070 in., 0.1778 mm), and more preferably 2.5 mil (0.0025 in., 0.0635 mm) to 3 mil (0.0030 in., 0.0762 mm). The median pore size is in the range of 2-10 micrometers, and a coefficient of thermal expansion (CTE) (25-800° C.) of less than 15×10?7/° C.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: October 28, 2008
    Assignee: Corning Incorporated
    Inventors: Xiaodong R. Fu, Jun Hou, John F. Wight, Jr.
  • Publication number: 20080260992
    Abstract: The height and width of a sheet-like filler material before it is placed in a cell of ahoneycomb material is set greater than those of the honeycomb material, and after the placement, peripheral edges of the honeycomb material are fringed with filler materials to prevent a filler material from falling out of an end section cell. A liquid adhesive agent is applied to the top of cell walls facing one surface of the honeycomb material, and a surface material is pressed to that surface of the honeycomb material to which the adhesive agent is applied. Then, before the adhesive agent hardens, water-absorbing foam materials are placed in cell spaces by pressing them into the cell spaces rom the other surface of the honeycomb material until they are in contact with the adhesive agent. The foam material is quickly adhered to the honeycomb material.
    Type: Application
    Filed: June 5, 2006
    Publication date: October 23, 2008
    Applicant: KABUSHIKI KAISHA SHIZUKA
    Inventors: Kouichi Take, Kunio Takahashi
  • Patent number: 7438967
    Abstract: In the ceramic honeycomb structural body comprised of an assembly formed by assembling and integrating a plurality of pillar-shaped porous honeycomb ceramic members, each member comprising numbers of cells juxtaposed in parallel to the longitudinal direction and defined by cell walls, the cross section area perpendicular to the longitudinal direction at each end portion of the members is made larger than that at the center portion of the member.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: October 21, 2008
    Assignee: Ibiden Co., Ltd.
    Inventor: Yuki Fujita
  • Patent number: 7438966
    Abstract: A honeycomb segment 3 includes a plurality of cells 5 functioning as fluid passages and disposed in parallel with one another in the central axis direction. Cells at four corners of both end faces of the honeycomb segment 3 are plugged with a plugging material 7. Since occurrence of chipping or a crack during handling before joining honeycomb segments can be reduced, productivity and yield of a honeycomb structure can be improved with the honeycomb segment.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: October 21, 2008
    Assignee: NGK Insulators, Ltd.
    Inventor: Takashi Mizutani
  • Publication number: 20080241012
    Abstract: A honeycomb structure includes a plurality of pillar-shaped honeycomb fired bodies each having a large number of cells longitudinally disposed in parallel with one another with a cell wall therebetween. The plurality of pillar-shaped honeycomb fired bodies are combined with one another by interposing an adhesive layer. A catalyst supporting layer is included in the adhesive layer which abuts one end face side of the honeycomb structure, while substantially no catalyst supporting layer is included in the adhesive layer which abuts another end face side of the honeycomb structure.
    Type: Application
    Filed: March 24, 2008
    Publication date: October 2, 2008
    Applicant: IBIDEN CO., LTD.
    Inventors: Kazushige Ohno, Akihiro Ohira
  • Publication number: 20080242535
    Abstract: A fibrous silicon carbide substrate is disclosed that is formed from a reaction between carbon fibers and silicon additives, to provide in-situ silicon carbide fibers. The fibrous structure is formed from a paper-making process of carbon or organic fibers that form a plurality of lamination members. The lamination members, each having a plurality of through holes, that when aligned in a lamination direction, form a honeycomb array of channels. The lamination members can be adapted into a wall-flow configuration for use in filtration of the exhaust of internal combustion engines.
    Type: Application
    Filed: April 2, 2007
    Publication date: October 2, 2008
    Applicant: GEO2 TECHNOLOGIES, INC.
    Inventors: James Jenq Liu, Jerry G. Weinstein
  • Patent number: 7429416
    Abstract: There is disclosed a honeycomb structure which solves a problem of antinomy that it is difficult to satisfy both of a high temperature rise performance and a high thermal capacity at the same time and which is disposed at a previous stage of a filter for trapping particulate matters (PM) discharged from a diesel engine so that regeneration of the PM trapped by the filter can smoothly be completed and an exhaust gas can efficiently be purified. In a honeycomb structure in which a plurality of cells arranged in parallel with one another to communicate between two end surfaces of the honeycomb structure are formed by a plurality of partition walls, the plurality of partition walls are made of a ceramic, and constituted of partition walls having two or more types of thicknesses.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: September 30, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshihiro Hirakawa, Yoshiyuki Kasai
  • Publication number: 20080229931
    Abstract: There is provided a honeycomb structure capable of suitably be used for a filter for trapping particulate matter, such as a diesel particulate filter (DPF) and capable of detecting an accumulation amount of particulate matter easily with high accuracy when the honeycomb structure is used for a filter for trapping particulate matter. The honeycomb structure 1 has a plurality of cells functioning as gas passages and partitioned and formed by the porous partition walls and has two or more electrodes therein.
    Type: Application
    Filed: May 29, 2008
    Publication date: September 25, 2008
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kyosuke KATSUYAMA, Takeya MIYASHITA, Kenshin KITOH, Yukio MIYAIRI
  • Patent number: 7416773
    Abstract: In order to provide a sound-absorbing body which has both a thin thickness and improved sound-absorption characteristics with regard to a low tone range sounds, the sound-absorbing body (1) includes: an organic hybrid sheet (2) constituted from an organic low-molecular material which is spread in a matrix polymer; and a gastight air cell (3) which is closely provided at a backside (2a) of the organic hybrid sheet, wherein the organic hybrid sheet indicates both a sound-absorption peak of a random incidence sound-absorption coefficient at a frequency band of 400 Hz or lower and another sound-absorption peak when the organic hybrid sheet is vibrated by applying air vibration caused by sound, because of adhering the organic hybrid sheet to the gastight air cell.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: August 26, 2008
    Assignee: Yamaha Corporation
    Inventors: Kunio Hiyama, Masuhiro Okada, Emiko Suzuki, legal representative, Yasutaka Nakamura, Hideo Suzuki
  • Publication number: 20080187714
    Abstract: An exhaust gas purifying catalyst is composed of: noble metal particles; first compounds which support the noble metal particles and suppress movement of the noble metal particles; and second compounds which encapsulate the noble metal particles and the first compounds, suppress the movement of the noble metal particles, and suppress the coagulation of the first compounds following mutual contact of the first compounds. The first compounds are a composite containing a rare earth element.
    Type: Application
    Filed: January 25, 2008
    Publication date: August 7, 2008
    Inventors: Hironori Wakamatsu, Maki Shimada, Masanori Nakamura, Katsuo Suga, Hiroto Kikuchi, Tetsuro Naito, Toshiharu Miyamura, Jun Ikezawa
  • Publication number: 20080182067
    Abstract: A method for making a composite panel, wherein the composite panel has a honeycomb core sandwiched between a pair of facing sheets, includes the steps of (a) coating the interior walls of the cells with a unexpanded thermo-expandable material; (b) bonding a pair of facing sheets to the opposite sides of the honeycomb core; and (c) heating the honeycomb core while the honeycomb core is sandwiched between the pair of facing sheets with sufficient heat to cause the thermo-expandable material to expand and to substantially fill the cells.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 31, 2008
    Inventors: Hongbin Shen, Phu Nguyen, Matthew Lowry
  • Publication number: 20080176029
    Abstract: There is provided a honeycomb structure capable of inhibiting damages such as chipping in an end portion from being caused upon a treatment of exhaust gas or the like while being fixed in a metal container. The honeycomb structure 100 includes: a honeycomb structured portion 1 having porous partition walls separating and forming a plurality of cells functioning as fluid passages and extending in an axial direction, and an outer peripheral coat portion 2 disposed on the outer periphery 1b of the honeycomb structured portion 1. An end face 2a of the outer peripheral coat portion 2 is located on the inside, in the axial direction, of an end face 1a of the honeycomb structured portion 1 in at least one end portion 3 in the axial direction.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 24, 2008
    Applicant: NGK INSULATORS, LTD.
    Inventor: Yukihito ICHIKAWA
  • Patent number: 7384442
    Abstract: A ceramic wall-flow filter for filtering particulate matter from gases and methods for manufacturing such wall-flow filters are disclosed. The filter includes an array of porous ceramic walls defining a pattern of end-plugged inlet and outlet cells, and heat absorbing elements disposed within at least some of the outlet cells such that a bulk heat capacity of the outlet cells is greater than a bulk capacity of the inlet cells. The heat absorbing elements increase a bulk heat capacity of the filter without substantially interfering with a flow of gas through the porous ceramic walls by allowing thinner walls. According to the method, during the step of extruding or thereafter, heat absorbing elements are formed within at least some of the outlet cells such that a heat capacity of the outlet cells is greater than the inlet cells.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: June 10, 2008
    Assignee: Corning Incorporated
    Inventors: Pronob Bardhan, Douglas Munroe Beall, Kenneth Richard Miller, John Forrest Wight, Jr.
  • Publication number: 20080124516
    Abstract: Disclosed is a method for producing a porous ceramic structure wherein as a pore-forming agent, hollow particles (microcapsules) made of an organic resin are used, and as at least one type of raw material particles, particles are used which contain 30 to 100 mass % of particles (spherical particles) having a circularity of 0.70 to 1.00 with respect to the total mass of the particles.
    Type: Application
    Filed: March 16, 2005
    Publication date: May 29, 2008
    Applicant: NGK Insulators, Ltd.
    Inventors: Yasushi Noguchi, Hiroyuki Suenobu
  • Patent number: 7341113
    Abstract: An embodiment of the invention includes an apparatus and a method for fire suppression including the utilization of an explosive composition layered between a fire suppressant panel such as, for example, a powder panel and another fixed structure such as, for example, a fuel tank dry bay wall. Upon impact or other means of detonation the explosive composition effects the rupture of a large number of frangible cells in the panel, dispersing the fire suppressant substance, thereby extinguishing or preventing fire.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: March 11, 2008
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Stephen Fallis, Joseph A. Manchor, Gary W Meyers
  • Patent number: 7338696
    Abstract: The invention relates to a perforated adhesive film (16) that will be used to glue a wall on one face of a cellular structure (10) to form a sandwich panel. The adhesive film (16) comprises at least one hole and not more than three holes (18) facing each of the cells (12) of the cellular structure (10). Preferably, the holes (18) are formed by punching an unperforated adhesive film. The holes (18) enable the formation of regular glue dabs on the ends of the partitions (14) separating cells (12) in the cellular structure (10), when the adhesive film (16) is heated before the wall is glued.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: March 4, 2008
    Assignee: Airbus France
    Inventors: Eric Rambaud, Dona Vitonou
  • Patent number: 7291373
    Abstract: Provided is a composite joint comprising a pair of composite panels each defining a composite panel thickness and having an inner face sheet and an outer face sheet sandwiching a core panel therebetween. The core panel defines a constant thickness portion and a ramp portion along which the core panel tapers to a reduced thickness portion. The outer face sheet is thickened in the area of the reduced thickness portion. The core panel includes a plurality of cells extending between the inner and outer face sheets. The cells within the reduced thickness portions are filled with a filler material. The cells within the ramp portions and constant thickness portions are filled with aerogel. A primary splice plate extends across the reduced thickness portions. Mechanical fasteners extend through the outer face sheet and into the primary and secondary splice plates. A themal barrier compound covers the primary splice plate.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: November 6, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: Jonathan D. Bartley-Cho, Christopher M. Yasaki, F. Donald Pousha, Ross S. Reynolds
  • Patent number: 7285214
    Abstract: There are disclosed a honeycomb structure which is preferably usable as a filter, for example, for trapping particulates in an exhaust gas of an internal combustion engine, boiler or the like or for filtering liquids such as city water and sewage and in which an increase of a pressure loss at a use time is inhibited. A honeycomb structure 1 comprises: two end surfaces 5 consisting of first and second end surfaces; a porous body 2 in which a plurality of fluid channels 3 extending to a second end surface 5b from a first end surface 5a are formed; and plugging members 4 for plugging end portions 6 on end surfaces 5 side of the fluid channels 3.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: October 23, 2007
    Assignee: NGK Insulators, Ltd.
    Inventor: Yukihito Ichikawa
  • Patent number: 7282274
    Abstract: The present invention is an integral composite structural (ICS) material comprising an open metal structure having at least one external side and internal surfaces defining a plurality of open shapes with a ceramic matrix composite bonded to at least one external side and the surfaces of at least a substantial portion of the plurality of open shapes and occupying at least a substantial portion of the plurality of open shapes. The open metal structure, independent of the ceramic matrix composite, has a total metal volume percent in the range of about 10% to about 90%, with no dimension of any open shape being greater than about ¾ inch. The ceramic matrix layer covers a substantial portion of at least one external side of the open metal structure.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: October 16, 2007
    Assignee: General Electric Company
    Inventors: Michael Lee Millard, Horace Richardson, Jr., Joseph Anthony Corrado
  • Publication number: 20070231535
    Abstract: A honeycomb structure 1 includes: porous partition walls 6 having a large number of pores which are disposed to form a plurality of cells 5 functioning as exhaust gas flow passages between two end faces of the walls 6, and plugged portions 7 formed by alternately plugging either end portion of the end faces of respective cells 5. A whole structure of the honeycomb structure 1 is composed of honeycomb segments 2 which have been separated into two or more in a plane parallel to a central axis. The segments 2 includes a specific segment 2X having properties different from those of general segments 2a other than the specific segment 2X, and additional plugged portions 8 are disposed in the unplugged opening end portions 7 which are not plugged among cells of the specific segment, thereby at least a part of exhaust gas flow is suppressed.
    Type: Application
    Filed: February 7, 2007
    Publication date: October 4, 2007
    Applicant: NGK INSULATORS, LTD.
    Inventor: Takashi Mizutani
  • Publication number: 20070231537
    Abstract: There is disclosed a honeycomb structure which solves a problem of antinomy that it is difficult to satisfy both of a high temperature rise performance and a high thermal capacity at the same time and which is disposed at a previous stage of a filter for trapping particulate matters (PM) discharged from a diesel engine so that regeneration of the PM trapped by the filter can smoothly be completed and an exhaust gas can efficiently be purified. In a honeycomb structure in which a plurality of cells arranged in parallel with one another to communicate between two end surfaces of the honeycomb structure are formed by a plurality of partition walls, the plurality of partition walls are made of a ceramic, and constituted of partition walls having two or more types of thicknesses.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 4, 2007
    Applicant: NGK INSULATORS, LTD.
    Inventors: Toshihiro Hirakawa, Yoshiyuki Kasai
  • Publication number: 20070231536
    Abstract: There is disclosed a honeycomb structure that is useful as a filter for trapping an exhaust gas, in particular, a diesel particulate filter (DPF) for trapping particulate matter (particulates) in an exhaust gas from a diesel engine, that prevents displacement of honeycomb segments during canning or use (under vibration) and that effectively prevents defects such as a crack due to thermal stress during use and regeneration.
    Type: Application
    Filed: March 15, 2007
    Publication date: October 4, 2007
    Applicant: NGK INSULATORS, LTD.
    Inventor: Wataru Shionoya
  • Publication number: 20070231539
    Abstract: There are disclosed a honeycomb catalytic body to which a wall flow structure is applied so that a fluid such as an exhaust gas passes through a partition wall twice or more, and a honeycomb structure for use as a catalyst carrier of the honeycomb catalytic body in which a pore characteristic and the like are appropriately adjusted as the catalytic body. In a honeycomb structure 11 including porous partition walls 4 arranged so as to form a plurality of cells 3 which communicate between two end surfaces of the honeycomb structure and having a large number of pores; and plugging portions 10 arranged so as to plug at least a part of the plurality of cells 3 at any position in a length direction of the cells, an average maximum image distance of the partition walls is larger than 40 ?m, and the plugging portions 10 are arranged so that at least a part of a fluid which has entered the cells from one end surface passes through the partition wall 4 twice or more, and is then discharged from the other end portion.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 4, 2007
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukio Miyairi, Naomi Noda, Mikio Makino
  • Publication number: 20070231533
    Abstract: A radial cell ceramic honeycomb structure is provided that is particularly adapted for use as a catalytic carrier or a particulate filter in an automotive or diesel exhaust system. The honeycomb structure includes a network of interconnected webs having a central axis. The network of webs includes radial webs of varying lengths, only some of which substantially extend the entire radial length of the network, and tangential webs that intersect to define rings of gas-conducting radial cells, and a rounded outer skin that surrounds the cells formed by the interconnected webs. The radial webs extending to the periphery of the network join an inner edge of the outer skin in a substantially orthogonal orientation to reduce thermally generated stresses and to increase strength of the resulting structure. The number of radial webs in the network changes along the radial length at transition zones that are defined by one of the tangential webs such that a desired cell density is achieved across the network.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 4, 2007
    Inventors: Kenneth William Aniolek, Douglas Munroe Beall, Priyank Paras Jain, Kenneth Richard Miller, Seth Thomas Nickerson, Alan Thomas Stephens
  • Publication number: 20070231538
    Abstract: There is disclosed a honeycomb structure which solves a problem of antinomy that it is difficult to satisfy both of a high temperature rise performance and a high thermal capacity at the same time and which is disposed at a previous stage of a filter for trapping particulate matters (PM) discharged from a diesel engine so that regeneration of the PM trapped by the filter can smoothly be completed and an exhaust gas can efficiently be purified. In a honeycomb structure in which a plurality of cells arranged in parallel with one another to communicate between two end surfaces of the honeycomb structure are formed by a plurality of partition walls, the plurality of partition walls are made of a ceramic, each cell is formed into a substantially square shape, an intersection between the partition walls is formed into an R-shape or a C-shape, a value (L/T) of a ratio of a diagonal distance L between the intersections to an average thickness T of the partition walls is set to 1.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 4, 2007
    Applicant: NGK INSULATORS, LTD.
    Inventors: Toshihiro Hirakawa, Yoshiyuki Kasai
  • Publication number: 20070218249
    Abstract: A honeycomb structure includes: a honeycomb segment joined body having a plurality of honeycomb segments unitarily joined at bonding faces thereof by means of a bonding material layer, and an outer peripheral coat layer covering a surface of an outer peripheral portion of the honeycomb segment joined body; in which a plurality of cells functioning as fluid passages are disposed to be in parallel with one another in a direction of a central axis. A bonding material layer between honeycomb segments constituting a central portion with respect to a diametral direction of the honeycomb segment joined body is made thicker than a bonding material layer between honeycomb segments constituting the outer peripheral portion of the honeycomb segment joined body.
    Type: Application
    Filed: March 7, 2007
    Publication date: September 20, 2007
    Applicant: NGK INSULATORS, LTD.
    Inventor: Ryuji Kai
  • Patent number: 7186310
    Abstract: A method for forming a honeycomb sandwich composite panel comprising dry fabrics, an unpermeating-resin film, a non-low-viscosity-resin film, a honeycomb core, a non-low-viscosity resin film, an unpermeating-resin film and dry fabrics, stacked in this order in a mold. The cells of the honeycomb core are sealed by the laminated films. The unpermeating-resin film prevents the excessive permeation of the resin which forms the laminated films into the dry fabrics and to enhance the adhesion of this resin to the honeycomb core by forming proper fillets of the resin of the laminated sealing films. Further, drying process for drying the dry fabrics enables the application of the RTM process to the formation of the honeycomb sandwich composite panel.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: March 6, 2007
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Eikatsu Yamaguchi, Seiji Maruyama
  • Patent number: 7132150
    Abstract: Porous ceramic catalyst supports or filters to be provided with catalyst coatings via oxide washcoating processes are pre-coated with polymer barrier layers to prevent washcoat nanoparticle intrusion into the microcracked and/or microporous surfaces of the ceramics, the barrier coatings being formed of hydrocarbon polymers that are soluble or dispersible in polar media, capable of forming neutral or hydrophilic surfaces on porous ceramic supports, and completely vaporizable at moderate washcoat stabilization or catalyst activation temperatures.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: November 7, 2006
    Assignee: Corning Incorporated
    Inventors: Steven B. Ogunwumi, Odessa N. Petzold, Yuxin Tang, Tinghong Tao, Jianguo Wang, Raja R. Wusirika
  • Patent number: 7128961
    Abstract: There is disclosed a honeycomb structure which can be used as a filter for trapping/collecting particulates included in an exhaust gas and in which it is possible to remove ashes deposited inside without requiring any special mechanism or apparatus or without being detached from the exhaust system. The structure comprises a plurality of through channels 9 extending to an axial direction of a honeycomb structure, porous partition walls 7 separating through channels one another, and plugging portions 11; said plugging portion plugging predetermined through channels 9a at one end and the rest of through channels 9b at other end opposite to the plugged end of the predetermined through channels, wherein at least a part of predetermined crossing portions of the porous partition walls is discontinued to form a void portion 17 in each of the predetermined crossing portions.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: October 31, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Ryuji Kai, Toshio Yamada
  • Patent number: 7122237
    Abstract: A honeycomb filter includes a honeycomb-shaped filter base having a plurality of through holes and a sealing member fixed on end surfaces of the filter base in which the through holes are open. The through holes of the filter base are clogged with the sealing member in a checker flag form on each end surface so as to clog the through holes differently from the through holes sealed on the opposite end surface. The sealing member is a sheet-shaped fired body with a thickness of 3 mm or less, and a difference in coefficient of thermal expansion at temperatures of 40 to 800° C. between said sealing member and said filter base is 0.5×10?6/° C. or less. This honeycomb filter has high filtration efficiency, and very high thermal shock resistance and has high bonding strength between the sealing member and the filter base and a low pressure loss.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: October 17, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshiyuki Hamanaka, Yasushi Noguchi
  • Patent number: 7105219
    Abstract: A brazing construction and method of brazing an abradable sealing material onto a base material is provided. The abradable sealing material is a tabular member having a cellular compartment construction in honeycomb form having empty compartments and partitions formed by overlapping a plurality of thin corrugated sheets. The abradable sealing material is brazed on the main material by, applying a stop-off agent on a side surface of the abradable sealing material except on a portion of the side surface close to a brazing face to form a stop-off area that prevents infiltration of a brazing filler metal in an overlapping part; superposing the brazing face of the abradable sealing material on the base material, such that the brazing filler metal is provided between the abradable sealing material and the base metal; and brazing the abradable sealing material to said base material.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: September 12, 2006
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Minoru Ohara
  • Patent number: 7101601
    Abstract: An exhaust gas purifying filter having a high strength and an excellent efficiency of exhaust gas purification and a method for manufacturing the same are provided. An exhaust gas purifying filter 1 comprises a ceramic honeycomb structure 2 having a surrounding wall 21, partition walls 22 provided in a honeycomb pattern within the surrounding wall 21, and a plurality of cells 23 partitioned by the partition walls 22 and penetrating through end faces 241, 242. If a virtual line 3 is drawn on the end faces 241, 242 of the structure 2 by continuously connecting points at a distance of 1.0 to 3.0 times the cell pitch in the direction toward the center from an inner surface 211 of the surrounding wall 21, not less than 90% of a peripheral area 25 outside the virtual line 3 is blocked with plug material 4.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: September 5, 2006
    Assignee: Denso Corporation
    Inventors: Mikio Ishihara, Mamoru Nishimura
  • Patent number: 7070853
    Abstract: Coating systems according to the prior art, wherein a ceramic layer is applied to a metallic layer of the coating system, the connection between metal and ceramic often being poor. A coating system (20) according to the invention has a porous layer (4) in which a ceramic (7) is at least partly disposed, so that the connection between ceramic (7) and the metal of the porous layer (4) is improved.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: July 4, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventor: Uwe Paul
  • Patent number: 7056568
    Abstract: A honeycomb structure, and a process for production thereof, formed by bonding into one piece via a bonding layer a plurality of honeycomb segments, the honeycomb segment having an outer wall, partition walls provided inside the outer wall, and a large number of through-holes divided by the partition walls and extending in the axial direction of the segment; the outer wall and bonding layer having a relation: d*[(?a/da)+(?c/dc)]???d*[(?a/da)+(?c/dc)]×0.6 wherein ?c (W/mK) and dc (cm) are respectively the thermal conductivity and thickness of the outer wall, ?a (W/mK) and da (cm) are respectively the thermal conductivity and thickness of the bonding layer, and ? (W/mK) and d (cm) are respectively the thermal conductivity and thickness of a layer which is the sum of the outer wall and the bonding layer.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: June 6, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Shuichi Ichikawa, Naoshi Masukawa
  • Patent number: 7048986
    Abstract: A sandwich panel includes a honeycomb core of a plurality of cells. A first skin is adhered to a first surface of the honeycomb core with an adhesive. A second skin is adhered to a second surface of the honeycomb core with the adhesive. The plurality of cells extend longitudinally between the first and second skins. The first and second skins adhere to the honeycomb core to form a sandwich panel having a surface area of at least 2.25 square feet. A foam fill is disposed within the cells of the honeycomb core. The foam fill and the honeycomb core define a first gap region proximate to the first skin and a second gap region proximate to the second skin.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: May 23, 2006
    Assignee: Northrop Grumman Corporation
    Inventors: Chandrakant Himatlal Shah, Tod Palm, Timothy Alan Dyer, Carl A. Reis
  • Patent number: 7045191
    Abstract: A stuffed textile article and method of manufacturing the same has at least one compartment having a baffle gate which receives a tube-like stuffing tool through which loose stuffing is blown into the compartment. Upon removal of the tool, the surrounding layers and panels which define the compartment are placed under tension by the stuffing causing the baffle gates to automatically close upon removal of the tool permanently preventing migration of the stuffing out of the compartment. The gate has a primary panel secured to the top and bottom layers of the article and an adjacent secondary panel at least partially covering the primary panel. The primary panel has a slit and the secondary panel has a slot. Taken individually, the slit and slot are each preferably longer than the thickness of the stuffed textile article and longer than half the circumference of the stuffing tool.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: May 16, 2006
    Assignee: American Quality Assurance Corporation
    Inventor: Peter Huntley
  • Patent number: 7041359
    Abstract: There is disclosed a honeycomb structure (1) comprising: a plurality of honeycomb segments (2a, 2b), bonded into one piece, having a large number of cells (6) separated from one another by cell walls (10) and extending through an axial direction. At least one honeycomb segment (2a) not constituting an outermost peripheral surface (23) of the honeycomb structure (1) has a larger average cell wall thickness and a smaller or equal cell density compared with those of at least one honeycomb segment (2b) constituting the outermost peripheral surface (23). There is disclosed a honeycomb structure assembly in which a material B having compressive elasticity is disposed in a compressed state on the outermost peripheral surface (23) of the honeycomb structure (1) to compression-hold the honeycomb structure (1) in a metallic container.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: May 9, 2006
    Assignee: NGK Insulators, Ltd.
    Inventor: Toshihiko Hijikata
  • Patent number: 7022376
    Abstract: A thin-walled honeycomb structure includes: a circumferential wall, numerous partition walls disposed inside the circumferential wall, and numerous cell passages defined by the partition walls. A circumferential portion of the honeycomb structure is reinforced wholly or in a part within a certain distance from an extremity surface of the honeycomb structure by a reinforcing material that dissipates or evaporates at a high temperature, and a method for producing the same.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: April 4, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihito Ichikawa, Koichi Ikeshima
  • Patent number: 7008461
    Abstract: There is disclosed a honeycomb structure usable as a filter for trapping/collecting particulates included in an exhaust gas; and the structure can remove ashes deposited inside without requiring any special mechanism or apparatus or without being detached from the exhaust system. The structure includes: a plurality of through channels 9 extending to the axial direction of the honeycomb structure, porous partition walls 7 separating through channels one another, and plugging portions 11 plugging predetermined through channels 9a at one end and the rest of through channels 9b at other end opposite to the plugged end of the predetermined through channels, wherein a through-hole is formed in at least a part of the plugging portion, and its diameter is 0.2 mm or more, but not more than a value which is smaller between 1 mm and 75% of a diameter of an inscribed circle of the through channel.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: March 7, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Tatsuyuki Kuki, Toshio Yamada
  • Patent number: 6984685
    Abstract: A stabilized thermally conductive mechanical compliant laminate pad to be interposed between opposed surfaces of a generating semi-conductor device and a heat sink, with the laminate pad comprising upper and lower laminae on opposed surfaces of a central stabilizing apertured grid. The laminae are subjected to a compressive force at an elevated temperature until portions of the laminae extend through the apertures to form a continuum. The laminae comprise a polymer matrix having a quantity of a low melting indium or gallium alloy and a thermally conductive particulate dispersed there through, with the polymer matrix being a hot wax or melt resin. With the upper and lower laminae positioned on opposed surfaces of a central stabilizing apertured grid a compressive load is applied to force portions of said laminae to pass through apertures in the mesh grid to form a continuum.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: January 10, 2006
    Assignee: The Bergquist Company
    Inventors: Sanjay Misra, Radesh Jewram, G M Fazley Elahee
  • Patent number: 6949719
    Abstract: A thermal insulator can change a heat insulation characteristic partially with a simple structure. The thermal insulator is divided into a plurality of parts in accordance with a temperature of a heat source which is insulated by the thermal insulator. The plurality of parts are formed of different honeycomb structures, respectively, so as to provide different heat insulation characteristics. The plurality of parts may be formed by different materials, or a shape or dimension such as a cell pitch of the honeycomb structure may be varied. Heat is collected from air within the honeycomb cells, and is transferred to other parts for heating.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: September 27, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Osamu Suenaga, Wataru Okase, Takenobu Matsuo
  • Patent number: 6890616
    Abstract: A ceramic honeycomb filter comprising a ceramic honeycomb structure having porous partition walls defining a plurality of flow paths for flowing an exhaust gas through the porous partition walls to remove particulates from the exhaust gas, wherein one end of each flow path is provided with a sealer, such that sealers of the flow paths in an inlet and an outlet of the ceramic honeycomb structure in a desired pattern; wherein the partition walls have thickness of 0.1-0.5 mm and a porosity of 50-80%; wherein the porosity of the sealers is larger than that of partition walls; and wherein the depth of the sealers is 3-15 mm.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: May 10, 2005
    Assignee: Hitachi Metals Ltd.
    Inventors: Hirohisa Suwabe, Shunji Okazaki, Osamu Tokudome, Yasuhiko Otsubo