Patents Assigned to Weir Slurry Group, Inc.
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Patent number: 12152599Abstract: 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: GrantFiled: August 18, 2021Date of Patent: November 26, 2024Assignee: Weir Slurry Group, Inc.Inventors: Mohammed Asadullah, Matthew Barton
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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: 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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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: 7871241Abstract: A self-monitoring adjustment system is provided for evaluating and effecting adjustment of the leakage restricting mechanism between the rotating and non-rotating elements of a rotodynamic pump to restrict leakage and to establish desired gap dimensions between the rotating and non-rotating elements of the pump. The adjustment system is structured to be self-monitoring for determination of when an adjustment of the leakage restricting mechanism is warranted by the conditions of the pump, and is structured with adjusting mechanisms that are self-adjusting responsive to the monitored conditions of the pump, though manual adjustment is also enabled.Type: GrantFiled: January 14, 2009Date of Patent: January 18, 2011Assignee: Weir Slurry Group, Inc.Inventors: Ronald J. Bourgeois, Randy J. Kosmicki, Jeffrey C. Vian, Tyler M. Erlandson, Michael L. Viken
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Patent number: 7780402Abstract: In a rotodynamic pump, a seal chamber conditioning valve mechanism is positioned at least partially within the seal chamber of the pump to selectively and intermittently deliver fluid to or discharge contents from the seal chamber to modify the condition or content of the seal chamber and effectively protect the mechanical seal from failure due to, for example, built up solids or the presence of air. The conditioning valve mechanism may be actuated by a control device in communication with monitoring apparatus that determines the condition of the seal chamber, and particularly the mechanical seal face.Type: GrantFiled: January 30, 2007Date of Patent: August 24, 2010Assignee: Weir Slurry Group, Inc.Inventor: Kevin Buschkopf
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Patent number: 7429160Abstract: A floating ring seal arrangement for rotodynamic pumps comprises a flexible ring that is structured to fit within a circular channel formed by generally concentric grooves in the rotating and non-rotating elements of the pump, the ring further being sized to rest against the inner diameter of the groove of the rotating element when static, and capable of radially expansion under centrifugal forces to cause the flexible ring to float in the circular channel during operation of the pump, or deformation under centrifugal or pressure forces such that gaps between the flexible ring and groove in the non-rotating element are minimized or eliminated.Type: GrantFiled: January 10, 2006Date of Patent: September 30, 2008Assignee: Weir Slurry Group, Inc.Inventors: Aleksander S. Roudnev, Randy J. Kosmicki
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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