Patents Assigned to Weir Slurry Group, Inc.
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Patent number: 11959487Abstract: 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: GrantFiled: September 30, 2021Date of Patent: April 16, 2024Assignee: Weir Slurry Group, Inc.Inventor: Randy James Kosmicki
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Patent number: 11466143Abstract: 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: GrantFiled: February 8, 2021Date of Patent: October 11, 2022Assignee: WEIR SLURRY GROUP, INC.Inventors: Francisco A. Gozalo, Sanford W. Clark, Tham Meng, Timothy Lane
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Patent number: 11236763Abstract: 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: GrantFiled: August 1, 2019Date of Patent: February 1, 2022Assignee: Weir Slurry Group, Inc.Inventors: Randy J Kosmicki, Allen David Russell
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Patent number: 10913839Abstract: 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: GrantFiled: April 14, 2020Date of Patent: February 9, 2021Assignee: Weir Slurry Group, Inc.Inventors: Francisco A. Gozalo, Sanford W. Clark, Tham Meng, Timothy Lane
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Patent number: 10895265Abstract: 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: GrantFiled: March 10, 2017Date of Patent: January 19, 2021Assignee: Weir Slurry Group, Inc.Inventors: Randy J Kosmicki, Aaron Wirth, Allen David Russell
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Patent number: 10647835Abstract: 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: GrantFiled: August 29, 2016Date of Patent: May 12, 2020Assignee: Weir Slurry Group, Inc.Inventors: Francisco A. Gozalo, Sanford W. Clark, Tham Meng, Timothy Lane
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Patent number: 10590791Abstract: 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: GrantFiled: March 29, 2018Date of Patent: March 17, 2020Assignee: Weir Slurry Group, Inc.Inventors: Randy J. Kosmicki, Michael L. Viken
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Patent number: 10436331Abstract: 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: GrantFiled: September 15, 2015Date of Patent: October 8, 2019Assignees: Parker-Hannifin Corporation, Weir Slurry Group, Inc.Inventors: Matthew Richard Frye, Richard J. Fecho
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Patent number: 10385647Abstract: This disclosure relates to swellable compositions, such as those, for example, comprising super absorbent polymers.Type: GrantFiled: July 14, 2016Date of Patent: August 20, 2019Assignee: Weir Slurry Group, Inc.Inventors: Francisco A. Gozalo, Sanford W. Clark
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Patent number: 10179873Abstract: 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: GrantFiled: March 6, 2015Date of Patent: January 15, 2019Assignee: Weir Slurry Group, Inc.Inventor: Tham Meng
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Publication number: 20180216480Abstract: 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: ApplicationFiled: March 29, 2018Publication date: August 2, 2018Applicant: Weir Slurry Group, Inc.Inventors: Randy J. Kosmicki, Michael L. Viken
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Patent number: 9957828Abstract: 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: GrantFiled: October 9, 2014Date of Patent: May 1, 2018Assignee: Weir Slurry Group, Inc.Inventors: Randy J. Kosmicki, Michael L. Viken
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Publication number: 20170292617Abstract: 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: ApplicationFiled: September 15, 2015Publication date: October 12, 2017Applicants: Parker-Hannifin Corporation, Weir Slurry Group, Inc.Inventors: Matthew Richard Frye, Richard J. Fecho
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Patent number: 9739285Abstract: 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: GrantFiled: March 14, 2014Date of Patent: August 22, 2017Assignee: Weir Slurry Group, Inc.Inventors: Randy J. Kosmicki, Michael L. Viken
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Publication number: 20140271162Abstract: A method is described for forming a lining on an inner surface of a pump casing. The lining can protect the pump casing from corrosive and abrasive fluids. The method disclosed improves the durability and reliability of the lining by introducing a compressive pre-stress to the lining when the casing is not loaded such that during normal operation, the lining can be in a stress state near neutral and avoid failures related to excessive tensile strains. The method includes securing at least a portion of the casing in a stationary position and applying an external load to deform the casing. The method further includes depositing the lining onto the inner surface of the casing, curing the lining, and removing the external load to pre-stress the lining.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: WEIR SLURRY GROUP, INC.Inventors: Ryley Karl, Richard Rindy, Peter Ozols, Kevin Buschkopf
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Publication number: 20140271177Abstract: 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: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: WEIR SLURRY GROUP, INC.Inventors: Randy J. Kosmicki, Michael L. Viken
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Patent number: 8235318Abstract: A mill liner element is structured with an elongated elastomer member having a non-elastomeric backing plate and a plurality of non-elastomeric inserts formed into the elastomer member to provide a liner element that provides a lifter bar element and a wear element that is less prone to cracking compared to conventional all-metal mill lining elements, and which provides ease of handling and replacement when worn. A multiplicity of mill liner elements are positionable in a grinding mill shell, and are suitable for use in a variety of types of grinding mill structures, including ball mills and AG and SAG mills.Type: GrantFiled: July 8, 2010Date of Patent: August 7, 2012Assignee: Weir Slurry Group, Inc.Inventors: David Timm, Neil Hirschi, Todd Moir, Bob Ecoff
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Patent number: D767637Type: GrantFiled: August 3, 2015Date of Patent: September 27, 2016Assignee: WEIR SLURRY GROUP, INC.Inventor: Chris Pappathopoulos
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Patent number: D958195Type: GrantFiled: September 26, 2020Date of Patent: July 19, 2022Assignee: Weir Slurry Group, Inc.Inventors: Randy James Kosmicki, Ronald Joseph Bourgeois
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Patent number: D958841Type: GrantFiled: September 26, 2020Date of Patent: July 26, 2022Assignee: Weir Slurry Group, Inc.Inventors: Randy James Kosmicki, Ronald Joseph Bourgeois