Patents Assigned to Weir Slurry Group, Inc.
  • Patent number: 12152599
    Abstract: A composite metal centrifugal slurry pump impeller including aback shroud with opposed inner and outer faces with an outer peripheral edge and a central axis, a plurality of pumping vanes extending away from the inner main face of the back shroud, the pumping vanes being disposed in spaced apart relation, each pumping vane including opposed main side faces, a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edge of the back shroud with a passageway between adjacent pumping vanes, wherein one or more cavities are located in the back shroud in the region of at least one of the passageways and wherein a wear resistant composition is bonded at least partially within the one or more cavities.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: November 26, 2024
    Assignee: Weir Slurry Group, Inc.
    Inventors: Mohammed Asadullah, Matthew Barton
  • Patent number: 12123429
    Abstract: Disclosed is a main liner for a centrifugal pump having a main pumping chamber, the main liner being located within an outer housing of the centrifugal pump, when in use, and comprising: a main pumping chamber; an inlet opening for the introduction of a liquid into the main pumping chamber; a discharge outlet extending from the main pumping chamber; and an outer surface of the discharge outlet for contact with the outer housing for the liner, the outer surface having at least one alignment portion for engaging with a corresponding alignment portion on the outer housing, the engagement of the alignment portion with the corresponding alignment portion limiting movement of the discharge outlet relative to the outer housing.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: October 22, 2024
    Assignee: WEIR SLURRY GROUP, INC.
    Inventors: Randy James Kosmicki, Ronald Joseph Bourgeois
  • Patent number: 12117018
    Abstract: There is provided a drive side liner for a centrifugal slurry pump, wherein the centrifugal slurry pump includes an outer casing, a main liner and an impeller driven by a drive shaft, wherein the main liner and drive side liner are housed within the outer casing of the centrifugal slurry pump, the drive side liner including: an inner liner portion including a central aperture configured to receive the drive shaft, the drive side liner further including an outer liner portion arranged to surround the inner liner portion, wherein the inner liner portion and the outer liner portion are each configured to removably engage with one another and the outer casing.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: October 15, 2024
    Assignee: WEIR SLURRY GROUP, INC.
    Inventor: Randy James Kosmicki
  • Patent number: 11959487
    Abstract: A centrifugal slurry pump impeller including a back shroud and a front shroud each with opposed inner and outer faces and an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the back and front shroud, each pumping vane including opposed main side faces, a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the back and front shrouds with a passageway between adjacent pumping vanes, each passageway including a blended region between each of the main side faces of the pumping vanes and the inner faces of the front and back shrouds wherein a surface of the inner face of at least one of the front and back shrouds includes a raised portion located between the blended regions of adjacent pumping vanes.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: April 16, 2024
    Assignee: Weir Slurry Group, Inc.
    Inventor: Randy James Kosmicki
  • Patent number: 11466143
    Abstract: This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 30×10?5 moles/cm3.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: October 11, 2022
    Assignee: WEIR SLURRY GROUP, INC.
    Inventors: Francisco A. Gozalo, Sanford W. Clark, Tham Meng, Timothy Lane
  • Patent number: 11236763
    Abstract: Various aspects of the disclosure are directed to providing structures that define a radial gap between an impeller and a pump casing element that facilitates minimizing the movement of fluid into the radial gap in a manner that lessens the impact, and consequent degradation, of the inner surface of the pump casing element by movement of abrasive particulates out of the radial gap, which is accomplished by providing a suction inlet arrangement of an impeller and pump casing element that are angled from the eye of the impeller to the outer periphery of the impeller in a direction away from the back shroud or drive side of the impeller and toward a first end of the pump casing in which fluid is introduced into the pump casing.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: February 1, 2022
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy J Kosmicki, Allen David Russell
  • Patent number: 10913839
    Abstract: This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 30×10?5 moles/cm3.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: February 9, 2021
    Assignee: Weir Slurry Group, Inc.
    Inventors: Francisco A. Gozalo, Sanford W. Clark, Tham Meng, Timothy Lane
  • Patent number: 10895265
    Abstract: A seal, for use with pump casing elements that are adjustable relative to each other, includes an annular band and a resilient annular flange oriented at a non-perpendicular angle to a first surface of the annular band such that the seal, in use, is able to provide greater adjustment between the adjustable pump elements while maintaining a reliable seal between the pump elements.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: January 19, 2021
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy J Kosmicki, Aaron Wirth, Allen David Russell
  • Patent number: 10647835
    Abstract: This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 30×10?5 moles/cm3.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: May 12, 2020
    Assignee: Weir Slurry Group, Inc.
    Inventors: Francisco A. Gozalo, Sanford W. Clark, Tham Meng, Timothy Lane
  • Patent number: 10590791
    Abstract: A seal assembly for sealing a fluid passageway from contaminants is disclosed. The fluid passageway is formed by a rotating shaft entering an opening in a housing. The fluid passageway connects an interior of the housing, and any exterior of the housing. The seal assembly includes a first sealing member and a second sealing member, which divides the fluid passage into an interior section, an open section, and a sealed section. The interior section is exposed to the interior of the housing. The sealed section is fluidly sealed between the interior section and the open section. A sensor is disposed within the sealed section. The sensor is configured to sense the contaminants within the sealed section and is electronically coupled to a controller configured to send an alarm signal. The sensor is a moisture sensor and extends into an annular recess formed in the stationary member.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: March 17, 2020
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy J. Kosmicki, Michael L. Viken
  • Patent number: 10436331
    Abstract: A seal with a wedging element for adjustably compressing the seal. The seal abuts a surface, such as a gate of a gate valve, to seal against the surface with a sealing force that prevents fluid flow therebetween. The sealing force of the seal may be increasing or decreasing compression by adjusting the wedging mechanism. For example, as the seal wears away due to friction between the seal and a sliding gate, the compression may be increased in the wedging mechanism to increase the sealing force to a low threshold.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 8, 2019
    Assignees: Parker-Hannifin Corporation, Weir Slurry Group, Inc.
    Inventors: Matthew Richard Frye, Richard J. Fecho
  • Patent number: 10385647
    Abstract: This disclosure relates to swellable compositions, such as those, for example, comprising super absorbent polymers.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: August 20, 2019
    Assignee: Weir Slurry Group, Inc.
    Inventors: Francisco A. Gozalo, Sanford W. Clark
  • Patent number: 10179873
    Abstract: A swellable packer comprising a metallic pipe, and a swellable rubber composition comprising an elastomer, a water soluble resin, for example polyethylene oxide, an ionic peroxide cure and/or peroxide curing with a metallic co-agent, a salt, and a super absorbing polymer wrapped around at least a portion of the metallic pipe.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: January 15, 2019
    Assignee: Weir Slurry Group, Inc.
    Inventor: Tham Meng
  • Publication number: 20180216480
    Abstract: A seal assembly for sealing a fluid passageway from contaminants is disclosed. The fluid passageway is formed by a rotating shaft entering an opening in a housing. The fluid passageway connects an interior of the housing, and any exterior of the housing. The seal assembly includes a first sealing member and a second sealing member, which divides the fluid passage into an interior section, an open section, and a sealed section. The interior section is exposed to the interior of the housing. The sealed section is fluidly sealed between the interior section and the open section. A sensor is disposed within the sealed section. The sensor is configured to sense the contaminants within the sealed section and is electronically coupled to a controller configured to send an alarm signal. The sensor is a moisture sensor and extends into an annular recess formed in the stationary member.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 2, 2018
    Applicant: Weir Slurry Group, Inc.
    Inventors: Randy J. Kosmicki, Michael L. Viken
  • Patent number: 9957828
    Abstract: A seal assembly for sealing a fluid passageway from contaminants is disclosed. The fluid passageway is formed by a rotating shaft entering an opening in a housing. The fluid passageway connects an interior of the housing, and any exterior of the housing. The seal assembly includes a first sealing member and a second sealing member, which divides the fluid passage into an interior section, an open section, and a sealed section. The interior section is exposed to the interior of the housing. The sealed section is fluidly sealed between the interior section and the open section. A sensor is disposed within the sealed section. The sensor is configured to sense the contaminants within the sealed section and is electronically coupled to a controller configured to send an alarm signal. The sensor is a moisture sensor and extends into an annular recess formed in the stationary member.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: May 1, 2018
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy J. Kosmicki, Michael L. Viken
  • Publication number: 20170292617
    Abstract: A seal with a wedging element for adjustably compressing the seal. The seal abuts a surface, such as a gate of a gate valve, to seal against the surface with a sealing force that prevents fluid flow therebetween. The sealing force of the seal may be increasing or decreasing compression by adjusting the wedging mechanism. For example, as the seal wears away due to friction between the seal and a sliding gate, the compression may be increased in the wedging mechanism to increase the sealing force to a low threshold.
    Type: Application
    Filed: September 15, 2015
    Publication date: October 12, 2017
    Applicants: Parker-Hannifin Corporation, Weir Slurry Group, Inc.
    Inventors: Matthew Richard Frye, Richard J. Fecho
  • Patent number: 9739285
    Abstract: A seal for use in a centrifugal pump, the pump having a stationary pump casing, a stationary plate and an axially adjustable side liner, is disclosed. The seal includes a base having an inner surface and an outer surface. A band portion extends from the base and a retainer member extends from the band portion. The retainer member is spaced apart from the base and oriented for positioning against a groove formed in the axially adjustable side plate liner of the centrifugal pump.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 22, 2017
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy J. Kosmicki, Michael L. Viken
  • Patent number: D767637
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: September 27, 2016
    Assignee: WEIR SLURRY GROUP, INC.
    Inventor: Chris Pappathopoulos
  • Patent number: D958195
    Type: Grant
    Filed: September 26, 2020
    Date of Patent: July 19, 2022
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy James Kosmicki, Ronald Joseph Bourgeois
  • Patent number: D958841
    Type: Grant
    Filed: September 26, 2020
    Date of Patent: July 26, 2022
    Assignee: Weir Slurry Group, Inc.
    Inventors: Randy James Kosmicki, Ronald Joseph Bourgeois