Patents by Inventor Juha Karvinen

Juha Karvinen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11634866
    Abstract: An apparatus for measuring dewatering in the wet end of a paper machine includes a measuring receptacle functioning at normal air pressure, in which receptacle the amount of the water of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure-difference transmitter and of a measuring weir.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: April 25, 2023
    Assignee: Runtech Systems OY
    Inventor: Juha Karvinen
  • Publication number: 20190352852
    Abstract: The object of the invention is an apparatus for measuring dewatering in the wet end of a paper machine. What is essential in the invention is that the apparatus comprises a measuring receptacle (15) functioning at normal air pressure, in which receptacle the amount of the water (7) of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure-difference transmitter (20) and of a measuring weir (8).
    Type: Application
    Filed: January 25, 2018
    Publication date: November 21, 2019
    Inventor: Juha Karvinen
  • Publication number: 20190345673
    Abstract: The object of the invention is an apparatus and a method for measuring dewatering in the wet end of a paper machine. What is essential in the invention is that the measuring system (26) comprises an essentially horizontal inlet pipe (10) on the machine level (11), which pipe is installed in the measuring receptacle (27), and in that the separation of air (22) is performed in an expanded pipe section (15) made in the inlet pipe (10) and in the outlet pipe (16) connected to it. A weir plate is installed in the measuring receptacle (27) of the measuring system (26), the weir plate functioning as a measuring weir (8) for measuring the amount of the dewatering flow, and from a pressure difference transmitter (20) installed on one side, which transmitter measures the height of the water surface produced by the measuring weir (8) for measuring the amount of water (7).
    Type: Application
    Filed: January 11, 2018
    Publication date: November 14, 2019
    Inventor: Juha Karvinen
  • Patent number: 9492970
    Abstract: The invention relates to a method for manufacturing the impeller of a centrifugal, that is, a radial compressor or radial blower, said impeller being mounted directly on the shaft of an electric motor. An essential feature of the invention is that the composite material impeller is made using an RTM process, wherein the RTM mold has a core and accurately trimmed fabrics placed therein in such a manner that the fabric layers, or preforms, are pulled onto the core thus achieving a maximally optimized use of materials in the structure.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: November 15, 2016
    Assignee: RUNTECH SYSTEMS OY
    Inventor: Juha Karvinen
  • Patent number: 9051685
    Abstract: A method for reducing the water and energy consumption of a paper machine with the help of a vacuum system and optimization of web solids content. On the paper machine wire section, water is removed with the help of a hybrid vacuum system serving first the vacuum locations needing a lower vacuum level and then those requiring a higher vacuum level in such fashion that the hybrid vacuum system removes water on different sections of the paper machine at the vacuum levels rendering the individually maximized energy efficiency. Additionally the solids content on the wire section is optimized with the help of an unfelted and smooth press roll adapted above the wire suction roll.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: June 9, 2015
    Assignee: RUNTECH SYSTEMS OY
    Inventors: Juha Karvinen, Kimmo Loippo
  • Publication number: 20140231038
    Abstract: A method for reducing the water and energy consumption of a paper machine with the help of a vacuum system and optimization of web solids content. On the paper machine wire section, water is removed with the help of a hybrid vacuum system serving first the vacuum locations needing a lower vacuum level and then those requiring a higher vacuum level in such a fashion that the hybrid vacuum system removes water on different sections of the paper machine at the vacuum levels rendering the Individually maximized energy efficiency. Additionally the solids content on the wire section is optimized with fee help of an unfelted and smooth press roll adapted above the wire suction roll.
    Type: Application
    Filed: October 5, 2012
    Publication date: August 21, 2014
    Applicant: Runtech Systems OY
    Inventors: Juha Karvinen, Kimmo Loippo
  • Patent number: 8326290
    Abstract: The techniques described increase efficiency and operation of a device operating in one or more communication systems. These embodiments provide a method for a device to perform selected scanning procedures of one or more communication systems based on the type of event detected by the device. One method includes detection of the opening or closing of the flip cover of the device and performing scanning as a result of detecting the event. Another method performs scanning in different modes such as high-scan, medium-scan and low-scan modes.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: December 4, 2012
    Assignee: Nokia Corporation
    Inventors: Juha Mortti, Pekka Vayrynen, Veijo Harkonen, Virpi Juusola, Jan Suumaki, Veli-Pekka Junttila, Lars Dalsgaard, Juha Karvinen, Mikko Jaakkola
  • Patent number: 8206491
    Abstract: An apparatus is provided for implementing water separation in the vacuum system of a paper machine. The apparatus includes a guiding baffle structure connected to an inlet pipe and a water trap vessel, and a droplet separation cell mounted at the mouth of an outlet pipe.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: June 26, 2012
    Assignee: Runtech Systems Oy
    Inventor: Juha Karvinen
  • Publication number: 20110247497
    Abstract: The invention relates to an apparatus for implementing water separation in the vacuum system of a paper machine. The apparatus is characterized by comprising a guiding baffle structure (1) connect to an inlet pipe (8) and a water trap vessel (2) as well as a droplet separation cell (4) mounted at the mouth of an outlet pipe (9).
    Type: Application
    Filed: May 20, 2010
    Publication date: October 13, 2011
    Applicant: RUNTECH SYSTEMS OY
    Inventor: Juha KARVINEN
  • Publication number: 20110173812
    Abstract: The invention relates to a method for manufacturing the impeller of a centrifugal, that is, a radial compressor or radial blower, said impeller being mounted directly on the shaft of an electric motor. An essential feature of the invention is that the composite material impeller is made using an RTM process, wherein the RTM mold has a core and accurately trimmed fabrics placed therein in such a manner that the fabric layers, or preforms, are pulled onto the core thus achieving a maximally optimized use of materials in the structure.
    Type: Application
    Filed: February 25, 2010
    Publication date: July 21, 2011
    Applicant: RUNTECH SYSTEMS OY
    Inventor: Juha KARVINEN
  • Publication number: 20060179365
    Abstract: The techniques described increase efficiency and operation of a device operating in one or more communication systems. These embodiments provide a method for a device to perform selected scanning procedures of one or more communication systems based on the type of event detected by the device. One method includes detection of the opening or closing of the flip cover of the device and performing scanning as a result of detecting the event. Another method performs scanning in different modes such as high-scan, medium-scan and low-scan modes.
    Type: Application
    Filed: January 17, 2006
    Publication date: August 10, 2006
    Inventors: Juha Mortti, Pekka Vayrynen, Veijo Harkonen, Virpi Juusola, Jan Suumaki, Veli-Pekka Junttila, Lars Dalsgaard, Juha Karvinen, Mikko Jaakkola
  • Patent number: 6248213
    Abstract: A method and apparatus for washing a fabric from a paper machine or equivalent, in which a washing fluid is applied to the fabric. In the procedure, the quantity of washing fluid is removed from the fabric and measured by a measuring device, whereby the measurement of the quantity of washing fluid communicates with a control unit that regulates a washing chemical. The regulation of the dosage of washing chemical is controlled on the basis of date adjusted or programmed on the basis of the liquid washing fluid collected.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: June 19, 2001
    Assignee: Ecopump Oy
    Inventor: Juha Karvinen
  • Patent number: 6053039
    Abstract: Apparatus for measuring the rate of flow of liquid through a liquid/air separator having a chamber space provided with at least one liquid/gas inlet duct, at least one gas outlet duct and at least one liquid outlet duct, includes a measuring receptacle disposed in the chamber into which liquid is received from the inlet duct. The measuring receptacle has an inflow compartment located below the inlet duct and receives the liquid from the inlet duct and a measuring compartment partially separated from the inflow compartment by a partition arranged so that liquid is accumulated and slowed in the inflow compartment. The measuring compartment has an outlet above a surface level of liquid in the chamber space. A suitable measuring device measures the quantity of liquid in the measuring compartment.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: April 25, 2000
    Assignee: Ecopump Oy
    Inventor: Juha Karvinen
  • Patent number: 6006443
    Abstract: The present invention is related to a method of treating a material web in a paper or paperboard machine, in which method the moving web is treated with a gas, particularly with steam. At least one supplementary treatment agent is dosed into the stream of said gas and effected to travel along with said gas toward said material web. The invention also concerns an apparatus suited to implement the method.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: December 28, 1999
    Assignee: Runtech Systems Oy
    Inventor: Juha Karvinen
  • Patent number: 5879513
    Abstract: Procedure for the drainage of the wire and/or press section of a paper machine, in which procedure at least one suction pipe (1) is provided with at least one gap (2) and the suction pipe (1) is connected to a vacuum device (4) to develop a vacuum at least in this vacuum pipe, and in which procedure a felt, wire or equivalent (3) is moved over the gap of the suction pipe, water being thus drained from the felt, wire or equivalent. In the procedure, the vacuum capacity is adjusted by measuring and/or adjusting at least the amount of water drained from the suction pipe (1) and, on the basis of the measured data, adjusting the vacuum capacity by means of regulating devices (11, 12). The invention also relates to an apparatus for adjusting the vacuum capacity.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: March 9, 1999
    Assignee: Ecopump Oy
    Inventor: Juha Karvinen