Bitumen Patents (Class 162/171)
  • Patent number: 8852401
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: October 7, 2014
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20140102653
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8632661
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 21, 2014
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8632660
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 21, 2014
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8562788
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: October 22, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8562790
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: October 22, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8562789
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: October 22, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8518217
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 27, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20130202876
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 8, 2013
    Applicant: W. R. MEADOWS, INC.
    Inventor: W. R. MEADOWS, INC.
  • Publication number: 20130202877
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 8, 2013
    Applicant: W. R. MEADOWS, INC.
    Inventor: W.R. Meadows, Inc.
  • Publication number: 20130153165
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: February 21, 2013
    Publication date: June 20, 2013
    Applicant: W. R. MEADOWS, INC.
    Inventor: W. R. Meadows, Inc.
  • Publication number: 20130126115
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: January 23, 2013
    Publication date: May 23, 2013
    Applicant: W. R. MEADOWS, INC.
    Inventor: W. R. MEADOWS, INC.
  • Patent number: 8422743
    Abstract: The present invention provides a surface-reading apparatus that includes a subject-flexing mechanism and a surface-reading component. The subject-flexing mechanism causes a subject to flex in one of a convex form and a concave form. The surface-reading component reads a characteristic of a surface condition of the subject that has been flexed by the subject-flexing mechanism. The surface-reading component can includes an optical reading component that optically reads the characteristic of the surface condition of the subject. The optical reading component may be a reflected light-reading component that reads the characteristic of the surface condition of the subject with reflected light or may be a transmitted light-reading component that reads the characteristic of the surface condition of the subject with transmitted light.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: April 16, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tadashi Shimizu, Tetsuya Kimura, Kensuke Ito
  • Patent number: 8382951
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: February 26, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8382952
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: February 26, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8382953
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: February 26, 2013
    Assignee: W. R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20120279670
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Applicant: W.R. MEADOWS, INC.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20120247701
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 4, 2012
    Applicant: W.R. MEADOWS, INC.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20120247700
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 4, 2012
    Applicant: W.R. MEADOWS, INC.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8241463
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: August 14, 2012
    Assignee: W.R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8057638
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: November 15, 2011
    Assignee: W.R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 8038845
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: October 18, 2011
    Assignee: W.R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20110017415
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: September 14, 2010
    Publication date: January 27, 2011
    Applicant: W.R. MEADOWS, INC.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20110017416
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: September 14, 2010
    Publication date: January 27, 2011
    Applicant: W.R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Patent number: 7815772
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: October 19, 2010
    Assignee: W. R. Meadows Inc.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20100055485
    Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 4, 2010
    Applicant: W.R. Meadows, Inc.
    Inventor: Tariq Mahmood Malik
  • Publication number: 20090084514
    Abstract: A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer latex adhesive binder applied to said surface as an aqueous coating composition, said aqueous coating composition upon drying and setting providing a pre-coated mat satisfying certain morphology requirements.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 2, 2009
    Inventors: Russell SMITH, Brian RANDALL
  • Patent number: 7354503
    Abstract: In one embodiment, a fire retardant composite panel material is fabricated. A water-based slurry comprising partially soluble boric acid and borax pentahydrate solids is created. An adhesive used in the composite panel fabrication process is added to fibers. The water-based slurry is separately added to the adhesive and, after mixing, to the fibers. The composite panel produced thereby is also described.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: April 8, 2008
    Assignee: Sierra Pine Ltd.
    Inventor: Graham Hume
  • Patent number: 6737443
    Abstract: Methods for making the stable dispersion of lignin components of black liquor in bitumen. Representative methods comprising converting an aqueous colloidal dispersion of lignin in spent pulping liquor to an anhydrous colloidal dispersion of lignin in a lubricating oil by mixing a lubricating oil with the spent pulping liquor, and dewatering the mixture so formed at an elevated temperature to form a cream-like paste compatible with bitumen, and mixing said anhydrous colloidal dispersion of lignin with bitumen.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: May 18, 2004
    Assignee: Polyphalt Inc.
    Inventor: Zhi-Zhong Liang
  • Publication number: 20020195216
    Abstract: The invention relates to a method of forming a multicomponent mat, the multicomponent mat which is formed from glass fibers and natural fibers and methods of making a multicomponent mat. Initially in the method of forming a multicomponent mat, a natural fiber slurry is formed. The next step involves using a surfactant to disperse glass fibers in white water. The natural fiber slurry and the slurry of glass fibers are generally compatible and are combined to form a multicomponent slurry which is used to form a multicomponent mat.
    Type: Application
    Filed: April 30, 2001
    Publication date: December 26, 2002
    Inventor: Daojie Dong
  • Patent number: 6488811
    Abstract: The invention relates to a method of forming a multicomponent mat, the multicomponent mat which is formed from glass fibers and natural fibers and methods of making a multicomponent mat. Initially in the method of forming a multicomponent mat, a natural fiber slurry is formed. The next step involves using a surfactant to disperse glass fibers in white water. The natural fiber slurry and the slurry of glass fibers are generally compatible and are combined to form a multicomponent slurry which is used to form a multicomponent mat.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: December 3, 2002
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventor: Daojie Dong
  • Patent number: 6149831
    Abstract: An insulation board suitable for use as a roof insulating board has a density between about 8 and about 15 pounds per cubic foot; a MOR/density ratio of at least 10.5 to 1 and includes, by dry weight, between about 45% and about 76% expanded perlite; between about 15% and about 45% cellulosic fibers; between about 0.1% and about 10% latex binder; between about 2% and about 9% bituminous material; and about 0% to about 3% alum.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: November 21, 2000
    Assignee: Johns Manville International, Inc.
    Inventors: Craig Donald DePorter, Steven Douglas Dawson, Mauro Vittorio Battaglioli, Christopher Paul Sandoval
  • Patent number: 6068804
    Abstract: A process of producing an asphalt-impregnated fiberboard comprises the steps of forming an aqueous slurry of a fibrous material and asphalt, the solids content of the slurry being less than about 8 weight percent, mixing the slurry to uniformly distribute its components, dewatering the slurry to form a wet mat, pressing the wet mat to consolidate it, and drying the consolidated wet mat. Fiberboards made by the process can be employed as durable resilient expansion joints between various types of structural members.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: May 30, 2000
    Assignee: Celotex Corporation
    Inventors: William E. Betzner, Fred L. Migliorini
  • Patent number: 5749954
    Abstract: A perlite-based insulation board includes, by dry weight, between about 50% and about 76% expanded perlite; between about 15% and about 45% fibers; between about 1% and about 5% starch; between about 2% and about 9% bituminous material; and about 0% to about 3% alum. The fibers are between about 50% and about 95% by dry weight recycled newsprint fibers and between about 5% and about 50% by dry weight virgin cellulose fibers, such as flax and/or peanut hull fibers. In one embodiment, the virgin cellulose fibers are, by dry weight, between about 10% and 40% flax fibers and about 60% and 90% peanut hull fibers.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: May 12, 1998
    Assignee: Johns Manville International, Inc.
    Inventors: David Chee-Fai Law, Christopher Paul Sandoval, Ruben G. Garcia
  • Patent number: 5066984
    Abstract: A device is disposed in the path of paper sheets leaving a printing unit or processor such as an office copier or non-impact printer and has an arcuate concave guide and a roll spaced from the guide to form a sheet path which is curved or arched oppositely to the direction in which the sheet is curled in the processor. The space between the guide and the roller is greater than the thickness of the paper and the paper is bent in the direction opposite to its curl as it passes through the arched space, while the beam strength of the paper and the change in direction of the paper maintain adequate drive friction on the sheet. A selector isolates the de-curler when it is not needed.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: November 19, 1991
    Assignee: Gradco Systems, Inc.
    Inventor: Peter M. Coombs
  • Patent number: 4759977
    Abstract: A flexible carbon material is produced by carbonizing a composite material comprising carbon fibers having an average length of 6 to 50 mm and a binding agent. Carbon lumps are derived from the binding agent and are dispersed in a matrix of the carbon fibers so as to restrain a plurality of the carbon fibers while yet permitting relative slippage to occur as between the carbon fibers and carbon lumps such that the carbon fiber material exhibits a flexibility ratio D/d of not greater than 200 (where D is the diameter of curvature of the carbon material, when bent, just before breakage, and d is the thickness of the carbon material). The carbon fibers and lumps are preferrably present in an amount of from 5 to 50%, and 5 to 70% by volume, respectively, based upon the total volume of the carbon material.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: July 26, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Fukuda, Yukihiro Shibuya, Kiyomi Ohuchi, Masumi Sagi, Naohiro Murayama, Masatomo Shigeta
  • Patent number: 4587070
    Abstract: This invention provides a method for the manufacture of a fibrous plate rich in water resistance, which comprises the steps of uniformly mixing and dispersing fibrous raw material and finely divided bituminous substance in water, molding the resultant aqueous dispersion in the shape of a plate, and heating the plate with a hot press thereby melting the bituminous substance contained in the fibrous material and converting the plate into a fibrous plate having the bituminous substance uniformly dispersed therein. The fibrous plate obtained by this method excels in water resistance, weatherability, and thermal insulation and passes the standard specification concerning joint plates for use in concrete structures.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: May 6, 1986
    Assignee: AOI Chemical, Inc.
    Inventors: Hajime Niwa, Katsumi Hironaka
  • Patent number: 4543158
    Abstract: Sheet type felt material comprising 5-20 wt % glass fibers, 40-80 wt % cellulose fibers, 5-25 % binder and 3-20 wt % asphalt. The felt is made on conventional felt making equipment and may be used as siding or roofing underlayment or as facer for foam insulating boards.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: September 24, 1985
    Assignee: GAF Corporation
    Inventors: Alfredo A. Bondoc, Eugene J. Flood, Frederick W. Sieling
  • Patent number: 4472243
    Abstract: Sheet type felt material and sheet type roofing material such as shingles and rolls made therefrom. The felt comprises 10-60 wt % glass fibers of varying lengths, 15-80 wt % cellulosic fiber and 5-25% binder. The roofing material is felt of the invention saturated with asphaltic saturant and coated with filled asphaltic coating material and conventional roofing granules.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: September 18, 1984
    Assignee: GAF Corporation
    Inventors: Alfredo A. Bondoc, Eugene J. Flood, Frederick W. Sieling
  • Patent number: 4284470
    Abstract: High strength roofing products using a novel glass fiber mat are described herein. The roofing products include shingles and built up roofing membranes and systems.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: August 18, 1981
    Assignee: GAF Corporation
    Inventor: Alfredo A. Bondoc
  • Patent number: 4126512
    Abstract: A thermal insulating board product, comprising expanded perlite, fibers, and bituminous material, also includes a relatively small amount of starch binder.
    Type: Grant
    Filed: November 26, 1973
    Date of Patent: November 21, 1978
    Assignee: Johns-Manville Corporation
    Inventor: John A. Hill
  • Patent number: 4118273
    Abstract: Perlite insulation board is produced on a rotary vacuum forming machine utilizing an aqueous slurry containing ultrafine perlite particles. The fine perlite particles slow down the rate of stock deposition on the facing wire of the rotary vacuum former, and permit the rotary vacuum former to operate at a desirable forming speed.
    Type: Grant
    Filed: September 20, 1974
    Date of Patent: October 3, 1978
    Assignee: Johns-Manville Corporation
    Inventors: Gilbert Godin, Fred C. Norgard
  • Patent number: 3988199
    Abstract: A perlite insulation board is disclosed herein and includes, as conventional ingredients, expanded perlite, organic fiber and binder, the perlite, being the largest single ingredient, by dry weight, in the board. The insulation board also includes gypsum in an amount less than the perlite but preferably in an amount sufficient to form a gypsum matrix throughout the board. A method of making a perlite insulation board of the general type just described is also disclosed herein.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: October 26, 1976
    Assignee: Johns-Manville Corporation
    Inventors: Roy Wayne Hillmer, Nicholas Francis Morrone, Chester Robert Slahetka
  • Patent number: 3985610
    Abstract: An improved low density asbestos-cement product and the process whereby it is produced wherein an asphalt emulsion is combined with the formulation from which the product is made, which asphalt emulsion has an asphalt phase which asphalt has a softening point of at least 150.degree.F and is dispersed in water in globules all smaller than 10 microns.
    Type: Grant
    Filed: January 7, 1974
    Date of Patent: October 12, 1976
    Assignee: National Gypsum Company
    Inventors: Robert C. Pomerhn, Robert M. Johnson
  • Patent number: 3943269
    Abstract: The process for producing roofing felt which is softer, more flexible and more fire-resistant than such felt commonly produced by the prior art and which consists of permeating the felt stock with a treating fluid comprising a mixture of oil and soda ladened water, next drying the treated felt stock to remove excess moisture therefrom, next impregnating the felt with heated molten asphalt, next permitting excess molten asphalt to drain therefrom and finally permitting the asphalt in the felt to cool.
    Type: Grant
    Filed: May 24, 1974
    Date of Patent: March 9, 1976
    Inventor: David B. Bell