Patents by Inventor Lars Gronvall

Lars Gronvall 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).

  • Publication number: 20240123453
    Abstract: Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of said thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 18, 2024
    Applicant: Metso Sweden AB
    Inventor: Lars GRONVALL
  • Patent number: 11878309
    Abstract: Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of said thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: January 23, 2024
    Assignee: Metso Outotec USA Inc.
    Inventor: Lars Grönvall
  • Patent number: 11833453
    Abstract: A filter press is disclosed for separating solid components from liquid components of a slurry. The filter press includes side beams and a plurality of filter plates oriented at right angles to the longitudinal direction of the side beams. The filter plates are adapted to move along the side beams. A stationary end is arranged on one end of the side beams and a movable head is adapted to transport the filter plates along the side beams. The filter press includes a press system adapted to exert a closing pressure on the filter plates to press the filter plates against each other. The press system further includes at least one electrically driven actuator adapted to generate an axially directed force on the filter plates by the movable head. The disclosure also relates to a method for separating the solid components from the liquid components of a slurry.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: December 5, 2023
    Assignee: Metso Sweden AB
    Inventor: Lars Grönvall
  • Patent number: 11724654
    Abstract: A lining element for a wear-resistant haul truck body lining comprises a reinforcement plate being at least partly embedded in elastic material. The reinforcement plate comprises a plurality of mounting holes which are arranged for mounting the lining element to a haul truck body and which are not covered by the elastic material, and one or more weight-reducing cut-out openings which are larger than the mounting holes and which are covered by the elastic material.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: August 15, 2023
    Assignee: Metso Sweden AB
    Inventors: Fredrik Larsson, Henrik Persson, Lars Grönvall
  • Publication number: 20230191417
    Abstract: Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of the thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection distributor.
    Type: Application
    Filed: February 8, 2023
    Publication date: June 22, 2023
    Applicant: Metso Sweden AB
    Inventor: Lars Gronvall
  • Patent number: 11607692
    Abstract: Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of said thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection distributor.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: March 21, 2023
    Assignee: Metso Sweden AB
    Inventor: Lars Grönvall
  • Publication number: 20230032206
    Abstract: A filter press for separating solid components from liquid components of a slurry. The filter press includes a compression system coupled to a stationary pressure plate of the filter press. The compression system includes at least one electrically operated compression actuator having a planetary screw assembly, and a transport system coupled to a displaceable pressure plate of the filter press. The transport system includes at least one electrically operated transport actuator having a rack and pinion drive assembly. The compression system rigidly connects to the transport system so as to form, for each respective pair of compression actuators and transport actuators, a common actuator link which extends linearly from the stationary pressure plate to the displaceable pressure plate along the longitudinal dimension. A retrofitting kit for a filter press, a method for replacing an existing compression and transport system for a filter press and a method for controlling a filter press are set forth.
    Type: Application
    Filed: December 15, 2020
    Publication date: February 2, 2023
    Applicant: Metso Outotec Finland Oy
    Inventor: Lars Grönvall
  • Publication number: 20220008930
    Abstract: Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of said thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection distributor.
    Type: Application
    Filed: November 9, 2018
    Publication date: January 13, 2022
    Applicant: Metso Sweden AB
    Inventor: Lars Grönvall
  • Patent number: 11072001
    Abstract: A vibratory screening apparatus including a support and at least two screen decks arranged one over the other as an assembly. Each screen deck includes a screen frame, a screen and a chamber underlaying the screen surface, an outlet duct for oversized material and an outlet duct for undersized material in communication with the chamber. Mountings are configured for mounting the assembly of the screen decks to the support. A drive support with a motor assembly is configured for vibrating the assembly of screen decks. A feed unit is configured to feed the material to be screened to each screen deck. The feed unit is arranged on the support and configured to be moved between a feed position and a maintenance position. The assembly of the at least two screen decks is resiliently arranged on the support, while the feed unit is non-resiliently arranged on the support.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: July 27, 2021
    Assignee: Metso Outotec Finland Oy
    Inventor: Lars Grönvall
  • Patent number: 11045818
    Abstract: A hydrocyclone separator and a system that includes a plurality of such hydrocyclone separators are presented. The hydrocyclone separator includes a head portion having an inlet conduit and an overflow discharge tube arranged in the head portion. The hydrocyclone separator further has an apex discharge port and a tapered separation portion arranged between the head portion and the apex discharge port. The tapered separation portion is tapering distally away from the head portion. Moreover, the head portion further includes an emptying port arranged in the head portion separately from the overflow discharge tube. Hereby, a hydrocyclone separator capable of achieving improved operational efficiency with reduced risk of coarse fraction being misplaced and left in the head portion is presented. This effectively reduces maintenance needs and prolongs the lifespan of the hydrocyclone.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: June 29, 2021
    Assignee: Metso Minerals Industries, Inc.
    Inventors: Brian Knorr, Lars Grönvall
  • Publication number: 20210170418
    Abstract: Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of said thrust rods is attached to the deflection distributing shaft via a lever, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection.
    Type: Application
    Filed: November 9, 2018
    Publication date: June 10, 2021
    Applicant: Metso Sweden AB
    Inventor: Lars Grönvall
  • Publication number: 20210146854
    Abstract: A lining element for a wear-resistant haul truck body lining comprises a reinforcement plate being at least partly embedded in elastic material. The reinforcement plate comprises a plurality of mounting holes which are arranged for mounting the lining element to a haul truck body and which are not covered by the elastic material, and one or more weight-reducing cut-out openings which are larger than the mounting holes and which are covered by the elastic material.
    Type: Application
    Filed: June 21, 2018
    Publication date: May 20, 2021
    Applicant: Metso Sweden AB
    Inventors: Fredrik Larsson, Henrik Persson, Lars Grönvall
  • Publication number: 20200316499
    Abstract: A filter press is disclosed for separating solid components from liquid components of a slurry. The filter press includes side beams and a plurality of filter plates oriented at right angles to the longitudinal direction of the side beams. The filter plates are adapted to move along the side beams. A stationary end is arranged on one end of the side beams and a movable head is adapted to transport the filter plates along the side beams. The filter press includes a press system adapted to exert a closing pressure on the filter plates to press the filter plates against each other. The press system further includes at least one electrically driven actuator adapted to generate an axially directed force on the filter plates by means of the movable head. The disclosure also relates to a method for separating the solid components from the liquid components of a slurry.
    Type: Application
    Filed: October 18, 2018
    Publication date: October 8, 2020
    Applicant: Metso Sweden AB
    Inventor: Lars Grönvall
  • Patent number: 10751735
    Abstract: A hydrocyclone separator for classifying solid material in liquid suspension is disclosed. The hydrocyclone separator comprises a head part having an inlet conduit, a conically tapered separation part, an adjustable apex discharge port, and a tail pipe. According to the invention the adjustable apex discharge port comprises an abrasive-resistant resilient body in which an apex orifice port is arranged, and an adjustment sleeve configured to circumferentially enclose the resilient body, which sleeve has a tapered conical surface configured to abut an outer surface of the resilient body, and which sleeve is arranged for axial displacement to thereby vary the size of the apex orifice port.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: August 25, 2020
    Assignee: Metso Sweden AB
    Inventor: Lars Grönvall
  • Publication number: 20200122163
    Abstract: A hydrocyclone separator and a system that includes a plurality of such hydrocyclone separators are presented. The hydrocyclone separator includes a head portion having an inlet conduit and an overflow discharge tube arranged in the head portion. The hydrocyclone separator further has an apex discharge port and a tapered separation portion arranged between the head portion and the apex discharge port. The tapered separation portion is tapering distally away from the head portion. Moreover, the head portion further includes an emptying port arranged in the head portion separately from the overflow discharge tube. Hereby, a hydrocyclone separator capable of achieving improved operational efficiency with reduced risk of coarse fraction being misplaced and left in the head portion is presented. This effectively reduces maintenance needs and prolongs the lifespan of the hydrocyclone.
    Type: Application
    Filed: June 22, 2018
    Publication date: April 23, 2020
    Applicant: Metso Minerals Industries, Inc.
    Inventors: Brian Knorr, Lars Grönvall
  • Patent number: 10493460
    Abstract: The invention relates to a roller crusher having two generally parallel rollers arranged to rotate in opposite directions, towards each other, and separated by a gap, each roller having a first end and a second end. The roller crusher comprises a flange attached to at least one of said ends of one of said rollers. The flange extending in a radial direction of said roller, and has a height above an outer surface of said roller which is sufficient to extend across said gap substantially along a nip angle of said roller crusher.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: December 3, 2019
    Assignee: Metso Minerals (Sweden) AB
    Inventor: Lars Gronvall
  • Patent number: 10486088
    Abstract: A hydrocyclone separator and a method for classifying solid material in liquid suspension are presented. The hydrocyclone separator comprises a head portion having an inlet conduit and an overflow discharge tube arranged in the head portion. The hydrocyclone separator further has an apex discharge port and a tapered separation portion arranged between the head portion and the apex discharge port. The tapered separation portion is tapering distally away from the head portion. Moreover, the hydrocyclone separator has a flow support portion with at least one flow support inlet configured to inject a fluid along at least a portion of an inner surface of the flow support portion towards the apex discharge port, when the hydrocyclone separator is oriented such that the apex discharge port is at a vertically elevated position relative to the overflow discharge tube.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: November 26, 2019
    Assignee: Metso Minerals Industries, Inc.
    Inventors: Brian Knorr, Lars Grönvall, Matt Gallimore
  • Publication number: 20190168233
    Abstract: A grinding media handling system for a vertical grinding mill comprises: a reservoir; a pump, such as a sump pump or a horizontal pump, for pumping water and/or a slurry of material to be ground from the reservoir via an inlet in an upper section of the vertical grinding mill into a grinding chamber of the mill; means for adding grinding media to the water and/or slurry upstream and/or downstream of the pump; and means for discharging slurry and grinding media from a lower section of the vertical mill.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 6, 2019
    Applicant: Metso Minerals Industries, Inc.
    Inventors: Peter Henry Radziszewski, Lars Gronvall
  • Publication number: 20190118225
    Abstract: A vibratory screening apparatus including a support and at least two screen decks arranged one over the other as an assembly. Each screen deck includes a screen frame, a screen and a chamber underlaying the screen surface, an outlet duct for oversized material and an outlet duct for undersized material in communication with the chamber. Mountings are configured for mounting the assembly of the screen decks to the support. A drive support with a motor assembly is configured for vibrating the assembly of screen decks. A feed unit is configured to feed the material to be screened to each screen deck. The feed unit is arranged on the support and configured to be moved between a feed position and a maintenance position. The assembly of the at least two screen decks is resiliently arranged on the support, while the feed unit is non-resiliently arranged on the support.
    Type: Application
    Filed: May 3, 2017
    Publication date: April 25, 2019
    Applicant: Metso Minerals, Inc.
    Inventor: Lars Grönvall
  • Publication number: 20180369720
    Abstract: A hydrocyclone separator and a method for classifying solid material in liquid suspension are presented. The hydrocyclone separator comprises a head portion having an inlet conduit and an overflow discharge tube arranged in the head portion. The hydrocyclone separator further has an apex discharge port and a tapered separation portion arranged between the head portion and the apex discharge port. The tapered separation portion is tapering distally away from the head portion. Moreover, the hydrocyclone separator has a flow support portion with at least one flow support inlet configured to inject a fluid along at least a portion of an inner surface of the flow support portion towards the apex discharge port, when the hydrocyclone separator is oriented such that the apex discharge port is at a vertically elevated position relative to the overflow discharge tube.
    Type: Application
    Filed: April 30, 2018
    Publication date: December 27, 2018
    Applicant: Metso Minerals Industries, Inc.
    Inventors: Brian KNORR, Lars GRÖNVALL, Matt GALLIMORE