Patents by Inventor Michael Trench
Michael Trench 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).
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Patent number: 11135603Abstract: There is provided a method of forming a hydrocyclone body including assembling sintered alumina blocks (27) against a form (37), holding the blocks (27) in place with tape (40), locating a hydrocyclone housing over the blocks (27), filling a space between them with settable epoxy/ceramic composite to secure the blocks (27) to the casing, and removing the form (37), resulting in a substantially continuous, wear resistant surface.Type: GrantFiled: December 11, 2018Date of Patent: October 5, 2021Inventor: Michael Trench
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Patent number: 10357785Abstract: In a centrifugal screening apparatus wherein a housing (10, 11) mounts a screen assembly (12) and a scroll assembly (20) to be differentially rotated about the machine axis, there is provided an inlet assembly (30) having an inlet body (31) defining an annular inlet space (32) coaxial with and opening in to an open apical end of the screen assembly (12) and a material supply conduit (35) delivering material to be screened to the annular space (32) and being aligned in a tangent to the annular space to deliver material to the screen assembly (12) substantially in the direction of rotation of the screen assembly (12).Type: GrantFiled: December 27, 2015Date of Patent: July 23, 2019Assignee: WEIR MINERALS AUSTRALIA LTD.Inventor: Michael Trench
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Patent number: 10293348Abstract: In a centrifugal scroll screen apparatus there is provided a scroll assembly (20) driven by a scroll assembly drive shaft (25) and being connected to the scroll assembly by an axial adjuster comprising a shaft cam portion (92) and a scroll portion (96) each having a respective camming surface (94) whereby relative rotation of the scroll portion (96) and the shaft portion (92) axially adjusts the proximity of the vanes to a coaxial conical screening surface, and a locking ring (97) selectively operable to rotationally secure the scroll portion (96) and the shaft portion (92).Type: GrantFiled: December 27, 2015Date of Patent: May 21, 2019Assignee: WEIR MINERALS AUSTRALIA LTDInventor: Michael Trench
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Publication number: 20190105665Abstract: There is provided a method of forming a hydrocyclone body including assembling sintered alumina blocks (27) against a form (37), holding the blocks (27) in place with tape (40), locating a hydrocyclone housing over the blocks (27), filling a space between them with settable epoxy/ceramic composite to secure the blocks (27) to the casing, and removing the form (37), resulting in a substantially continuous, wear resistant surface.Type: ApplicationFiled: December 11, 2018Publication date: April 11, 2019Inventor: Michael Trench
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Patent number: 10252194Abstract: A screen assembly (10) for a horizontal screen machine has a screen body (12) diverging axially from an inlet end (13). A base wall portion (15) mounts the screen body (12) for rotation and includes eight substantially radial webs (16). An annular wall portion (21) is located adjacent the inner end (13) and includes drain passages (24) adapted to drain discontinuities in a bonding layer comprising a moisture cure polyurethane sealant/adhesive overlying the annular wall portion (21). Wear resistant tungsten carbide elements (26) include a plurality of apertures (27) extending through a wear face to a bonding face. Voids (32) in the discontinuous bonding layer (31) provide fluid interconnection between the apertures (27) and the drain passages (24). A replaceable screen member (33) is releasably secured at an inner ring frame (22) and an outer ring frame (36) of the screen body (12).Type: GrantFiled: February 24, 2015Date of Patent: April 9, 2019Assignee: WEIR MINERALS AUSTRALIA LTDInventor: Michael Trench
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Patent number: 10159989Abstract: There is provided a method of forming a hydrocyclone body including assembling sintered alumina blocks (27) against a form (37), holding the blocks (27) in place with tape (40), locating a hydrocyclone housing over the blocks (27), filling a space between them with settable epoxy/ceramic composite to secure the blocks (27) to the casing, and removing the form (37), resulting in a substantially continuous, wear resistant surface.Type: GrantFiled: August 8, 2014Date of Patent: December 25, 2018Assignee: Weir Minerals Australia Ltd.Inventor: Michael Trench
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Patent number: 9861915Abstract: Screening apparatus includes a driving a shaft (12) into a screen housing (13) having a removable closure (14) and dividing wall (15) forming an underflow chamber (16) and an overflow chamber (17). The shaft (12) supports and drives an screen (21) comprising a plate steel basket carrier portion (22) axially spaced from intermediate ring frames (23) and an outer frame ring and flange (24), all interconnected by circumferentially spaced stringers (25) to form an all-welded, integral, generally truncated-conical screen (21) cage. The cage supports a wedge wire screening surface (26). The closure (14) and housing (13) mutually support an inlet assembly (27) comprising a chute (32) feeding the water and coarse coal to the inner end of the screen assembly (21). The integral, all welded screen (21) may be replaced as a unit without refurbishment.Type: GrantFiled: September 27, 2012Date of Patent: January 9, 2018Assignee: Weir Minerals Australia LimitedInventor: Michael Trench
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Publication number: 20170368558Abstract: In a centrifugal scroll screen apparatus there is provided a scroll assembly (20) driven by a scroll assembly drive shaft (25) and being connected to the scroll assembly by an axial adjuster comprising a shaft cam portion (92) and a scroll portion (96) each having a respective camming surface (94) whereby relative rotation of the scroll portion (96) and the shaft portion (92) axially adjusts the proximity of the vanes to a coaxial conical screening surface, and a locking ring (97) selectively operable to rotationally secure the scroll portion (96) and the shaft portion (92).Type: ApplicationFiled: December 27, 2015Publication date: December 28, 2017Inventor: Michael Trench
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Publication number: 20170368559Abstract: In a centrifugal screening apparatus wherein a housing (10, 11) mounts a screen assembly (12) and a scroll assembly (20) to be differentially rotated about the machine axis, there is provided an inlet assembly (30) having an inlet body (31) defining an annular inlet space (32) coaxial with and opening in to an open apical end of the screen assembly (12) and a material supply conduit (35) delivering material to be screened to the annular space (32) and being aligned in a tangent to the annular space to deliver material to the screen assembly (12) substantially in the direction of rotation of the screen assembly (12).Type: ApplicationFiled: December 27, 2015Publication date: December 28, 2017Inventor: Michael Trench
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Publication number: 20160325207Abstract: A screen assembly (10) for a horizontal screen machine has a screen body (12) diverging axially from an inlet end (13). A base wall portion (15) mounts the screen body (12) for rotation and includes eight substantially radial webs (16). An annular wall portion (21) is located adjacent the inner end (13) and includes drain passages (24) adapted to drain discontinuities in a bonding layer comprising a moisture cure polyurethane sealant/adhesive overlying the annular wall portion (21). Wear resistant tungsten carbide elements (26) include a plurality of apertures (27) extending through a wear face to a bonding face. Voids (32) in the discontinuous bonding layer (31) provide fluid interconnection between the apertures (27) and the drain passages (24). A replaceable screen member (33) is releasably secured at an inner ring frame (22) and an outer ring frame (36) of the screen body (12).Type: ApplicationFiled: February 24, 2015Publication date: November 10, 2016Inventor: Michael TRENCH
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Publication number: 20160184837Abstract: There is provided a method of forming a hydrocyclone body including assembling sintered alumina blocks (27) against a form (37), holding the blocks (27) in place with tape (40), locating a hydrocyclone housing over the blocks (27), filling a space between them with settable epoxy/ceramic composite to secure the blocks (27) to the casing, and removing the form (37), resulting in a substantially continuous, wear resistant surface.Type: ApplicationFiled: August 8, 2014Publication date: June 30, 2016Applicant: Weir Minerals Australia Ltd.Inventor: Michael Trench
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Publication number: 20150041384Abstract: Screening apparatus includes a driving a shaft (12) into a screen housing (13) having a removable closure (14) and dividing wall (15) forming an underflow chamber (16) and an overflow chamber (17). The shaft (12) supports and drives an screen (21) comprising a plate steel basket carrier portion (22) axially spaced from intermediate ring frames (23) and an outer frame ring and flange (24), all interconnected by circumferentially spaced stringers (25) to form an all-welded, integral, generally truncated-conical screen (21) cage. The cage supports a wedge wire screening surface (26). The closure (14) and housing (13) mutually support an inlet assembly (27) comprising a chute (32) feeding the water and coarse coal to the inner end of the screen assembly (21). The integral, all welded screen (21) may be replaced as a unit without refurbishment.Type: ApplicationFiled: September 27, 2012Publication date: February 12, 2015Applicant: Weir Minerals Australia LimitedInventor: Michael Trench
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Patent number: 8544655Abstract: A vibratory screening apparatus includes a screen module. The screen module includes: a panel frame having opposed side portions joined by opposed end portions, the end portions configured to locate the panel frame between spaced panel support rails; at least one intermediate portion extending between the opposed side portions and/or opposed end portions and dividing the panel frame into panel portions; the side portions and the at least one intermediate portion having engagement formations provided on upper surfaces thereof; and at least one pair of screen panels, the screen panels overlying respective panel portions of the panel frame and including complementary engagement formations on an underside periphery thereof for engagement with the peripheral panel engagement formations, defined by the engagement formations of the panel frame and panel support rails.Type: GrantFiled: November 3, 2011Date of Patent: October 1, 2013Assignee: Ludowici Mineral Processing Equipment Pty. Ltd.Inventors: Michael Trench, Sasha Birtasevic, George Gruevski, Kishor Ravi Thekkuveetil
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Patent number: 8257587Abstract: A horizontal centrifugal scroll screen apparatus including: a housing; a frusto-conical screen assembly mounted within the housing and having an outer inlet end and an inner discharge end, the screen assembly being mounted for driven rotation via a base-of-spoke piece disposed across the inner discharge end thereof; and a frusto-conical scroll assembly coaxially mounted for differential driven rotation within the screen assembly and including an outer closed end in the proximity of the outer inlet end of the screen assembly and being adapted to direct material to be screened from a material supply conduit to the outer inlet end of the screen assembly for screening and conveyance to an outlet provided in the base-of-spoke piece.Type: GrantFiled: April 5, 2007Date of Patent: September 4, 2012Assignee: Ludowici Australia Pty. Ltd.Inventors: Robert Bruce Angus, Michael Trench, Maurice Ross Munro, Stephen Thomas Wilmot, Stephen John Walsh, Terrance Shane McLoughlin
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Publication number: 20120080362Abstract: A vibratory screening apparatus includes a screen module. The screen module includes: a panel frame having opposed side portions joined by opposed end portions, the end portions configured to locate the panel frame between spaced panel support rails; at least one intermediate portion extending between the opposed side portions and/or opposed end portions and dividing the panel frame into panel portions; the side portions and the at least one intermediate portion having engagement formations provided on upper surfaces thereof; and at least one pair of screen panels, the screen panels overlying respective panel portions of the panel frame and including complementary engagement formations on an underside periphery thereof for engagement with the peripheral panel engagement formations, defined by the engagement formations of the panel frame and panel support rails.Type: ApplicationFiled: November 3, 2011Publication date: April 5, 2012Inventors: Michael Trench, Sasha Birtasevic, George Gruevski, Kishor Ravi Thekkuveetil
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Patent number: 8127932Abstract: The invention provides a screen module for use on vibratory screening apparatus.Type: GrantFiled: August 1, 2007Date of Patent: March 6, 2012Assignee: Ludowici Australia Pty LtdInventors: Michael Trench, Sasha Birtasevic, George Gruevski, Kishor Ravi Thekkuveetil
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Publication number: 20100120598Abstract: A horizontal centrifugal scroll screen apparatus including: a housing; a frusto-conical screen assembly mounted within the housing and having an outer inlet end and an inner discharge end, the screen assembly being mounted for driven rotation via a base-of-spoke piece disposed across the inner discharge end thereof; and a frusto-conical scroll assembly coaxially mounted for differential driven rotation within the screen assembly and including an outer closed end in the proximity of the outer inlet end of the screen assembly and being adapted to direct material to be screened from a material supply conduit to the outer inlet end of the screen assembly for screening and conveyance to an outlet provided in the base-of-spoke piece.Type: ApplicationFiled: April 5, 2007Publication date: May 13, 2010Inventors: Robert Bruce Angus, Michael Trench, Maurice Ross Munro, Stephen Thomas Wilmot, Stephen John Walsh, Terrance Shane Mcloughlin
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Publication number: 20090301945Abstract: The invention provides a screen module for use on vibratory screening apparatus.Type: ApplicationFiled: August 1, 2007Publication date: December 10, 2009Inventors: Michael Trench, Sasha Birtasevic, George Gruevski, Kishor Ravi Thekkuveetil
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Patent number: 6830155Abstract: There is provided screen apparatus comprising side walls having a lower edge portion configured to accept tubular screen support members. An upper edge extends from the inlet end of the side walls to an apex from which a declining edge extends to the foot of the side walls. The lower edge, upper edge and declining edge are each provided with edge stiffening. A torque tube is secured between the respective exciter mount castings, the torque tube and stiffened side wall being selected to provide that the first fundamental frequency mode greater than the exciter frequency is at least 2 Hz greater than the exciter frequency and the first fundamental frequency below the exciter frequency is at least 2 Hz lower than the exciter frequency.Type: GrantFiled: May 28, 2002Date of Patent: December 14, 2004Assignee: Ludowici Mineral Processing Equipment Pty Ltd.Inventors: Michael Trench, Robert John Allen, Peter Rubie, John Russell, Paul Dalziel, Ben Plant, John Oliver, Neville Warnes, Russell Taylor, John Ettingshausen, Edward McKerr
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Publication number: 20020195377Abstract: There is provided screen apparatus comprising side walls having a lower edge portion configured to accept tubular screen support members. An upper edge extends from the inlet end of the side walls to an apex from which a declining edge extends to the foot of the side walls. The lower edge, upper edge and declining edge are each provided with edge stiffening. A torque tube is secured between the respective exciter mount castings, the torque tube and stiffened side wall being selected to provide that the first fundamental frequency mode greater than the exciter frequency is at least 2 Hz greater than the exciter frequency and the first fundamental frequency below the exciter frequency is at least 2 Hz lower than the exciter frequency.Type: ApplicationFiled: May 28, 2002Publication date: December 26, 2002Inventors: Michael Trench, Robert John Allen, Peter Rubie, John Russell, Paul Dalziel, Ben Plant, John Oliver, Neville Warnes, Russell Taylor, John Ettingshausen, Edward McKerr