Patents Assigned to United Wire Limited
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Publication number: 20120006735Abstract: A separating screen has a rectangular body (1) one side of which has a seal for sealing against an abutting side of an adjacent screen or shaker basket. The seal is provided by an elongate sealing strip (9) of resilient material held in place on the side of the body by a retaining strip (5) which can be integrally moulded with the body (1) or may be a separately formed component.Type: ApplicationFiled: July 8, 2009Publication date: January 12, 2012Applicant: UNITED WIRE LIMITEDInventor: Andrew Ralph
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Publication number: 20110284455Abstract: The invention relates to a screen frame adapted for use in a shaker and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of plastics ribs extending between opposing regions of the perimeter, the frame being arranged such that, when fitted in a shaker to which it is adapted for, a portion of the opposing regions is clamped in place and a portion of the opposing regions is not clamped with the number of plastics ribs per unit length for the clamped portion greater than the number of plastics ribs per unit length for the unclamped portion, and to a shaker comprising at least one such screen frame.Type: ApplicationFiled: July 8, 2009Publication date: November 24, 2011Applicants: M-I L.L.C., UNITED WIRE LIMITEDInventors: Graham Robertson, Brian Carr, Eric Cady
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Publication number: 20110266214Abstract: The invention relates to a screen frame adapted for use in a shaker to separate solids from a liquid/solid mixture and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of plastics ribs extending between opposing regions of the perimeter, the plastics ribs together forming an upper face and a lower face, wherein the frame further comprises at least one metal rib extending between opposing regions of the perimeter and extending from the upper face to the lower face, and to a shaker comprising at least one such screen frame.Type: ApplicationFiled: July 8, 2009Publication date: November 3, 2011Applicants: M-I L.L.C., UNITED WIRE LIMITEDInventors: Graham Robertson, Brian Carr, Eric Cady
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Publication number: 20110259814Abstract: There is provided a screen frame adapted for use in a shaker to separate solids from liquid/solid mixture and to which woven wire mesh is to be attached, comprising a plurality of intersecting elongate members (12) defining a plurality of openings (10), or cells, wherein at least one protrusion (26) in the form of an elongate rib extends partway across each opening (10).Type: ApplicationFiled: December 14, 2009Publication date: October 27, 2011Applicant: United Wire LimitedInventor: Graham Robertson
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Publication number: 20110215047Abstract: A vibratory separator screen assembly, the screen assembly including a frame having a top surface and a bottom surface having a tapered recess configured to receive a locating element disposed on the vibratory separator.Type: ApplicationFiled: November 19, 2009Publication date: September 8, 2011Applicant: UNITED WIRE LIMITEDInventors: Claire Galloway, Andrew Ralph
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Patent number: 7992719Abstract: A hookstrip screen assembly for use in a shaker is disclosed. The hookstrip screen assembly includes a filtering element and a composite frame further including a top surface, a bottom surface, and a plurality of filtering element attachment points. Also, the filtering element is attached to the plurality of filtering element attachment points. In another aspect, a method of forming a hookstrip screen assembly for use in a shaker. The method of forming a hookstrip screen assembly includes forming a wire structure, molding a composite frame incorporating the wire structure and forming a plurality of filtering element attachment points on the composite frame. The method also includes attaching a filtering element to the plurality of filtering element attachment points on the composite frame.Type: GrantFiled: September 21, 2007Date of Patent: August 9, 2011Assignees: M-I L.L.C., United Wire LimitedInventors: Brian S. Carr, Graham Robertson, Eric Cady
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Publication number: 20110155653Abstract: The invention relates to a screen frame adapted for use in a shaker to separate solids from a liquid/solid mixture and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of ribs extending between opposing regions of the perimeter, the ribs defining an upper horizontal face to which a screen is to be attached, wherein at least one rib extends downwardly from the upper face at an angle off set to vertical, and to a shaker comprising at least one such screen frame.Type: ApplicationFiled: July 8, 2009Publication date: June 30, 2011Applicant: UNITED WIRE LIMITEDInventors: Graham Robertson, Claire McLean, Andrew Ralph
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Publication number: 20110139688Abstract: A method of forming a shaker screen includes forming a frame, and attaching a first sealing element to at least one side of an outer perimeter of the frame, wherein the attaching comprises aligning a first mating surface of the frame to a second mating surface of the first sealing element, and wherein the first mating surface of the frame includes an extension, and the second mating surface of the first sealing element includes a groove configured to align with the extension. A system of sealing shaker screens includes a first screen and a second screen disposed adjacent the first screen, wherein a first sealing element of a first frame and a portion of the second screen interact to provide a seal between the first screen and the second screen.Type: ApplicationFiled: February 21, 2011Publication date: June 16, 2011Applicants: M-I L.L.C., UNITED WIRE LIMITEDInventors: Brian S. Carr, Graham Robertson, Eric Cady
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Patent number: 7938926Abstract: In a method of and apparatus for manufacturing a filtering screen, a frame of plastics coated metal or reinforced plastics material is located in a jig and at least two sheets of wire cloths are placed over the frame and their edges gripped by pneumatically operated clamps carried by the jig. The clamps are pneumatically driven outwardly of the frame to tension each cloth in orthogonal directions. The tensioned cloths are pressed against the frame and heated in order to bond the cloths to the frame. The heated material is allowed to cool, and after completion of the bonding step the clamps a released, allowing the frame to be removed from the jig. Where necessary the cloths are trimmed back to the edges of the frame. A separate set of pneumatically operated clamps may be provided for gripping all four edges of each wire cloth layer to allow each layer to be individually tensioned.Type: GrantFiled: October 25, 2007Date of Patent: May 10, 2011Assignee: United Wire LimitedInventors: Andrew Hughes, Morton Barrowmore Auld
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Patent number: 7891497Abstract: A system including a first screen having a first frame and a first sealing element attached to an outer perimeter of the first frame, and a second screen disposed adjacent the first screen, the second screen having a second frame and a second sealing element attached to an outer perimeter of the second frame, wherein the first sealing element and the second sealing element provide a seal between the first screen and the second screen is disclosed. Further, a method of forming a screen frame including forming a frame and attaching a sealing element to an outer perimeter of the frame is disclosed. Additionally, a shaker screen including a frame and a sealing element attached to an outer perimeter of the frame, wherein the sealing element is attached by one selected from thermal bonding and co-molding is disclosed.Type: GrantFiled: September 27, 2007Date of Patent: February 22, 2011Assignees: M-I L.L.C., United Wire LimitedInventors: Brian S. Carr, Graham Robertson, Eric Cady
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Publication number: 20100307962Abstract: Abstract: A shaker screen for attachment to a bed of a shaker includes a screen frame having at least one mesh screen attached to the top side of the screen frame, wherein the screen frame is preferentially bowed prior to attaching the mesh screen to the screen frame.Type: ApplicationFiled: February 4, 2009Publication date: December 9, 2010Applicants: M-I L.L.C., UNITED WIRE LIMITEDInventors: Graham Robertson, Brian S. Carr, Robert M. Barrett
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Publication number: 20100270215Abstract: A vibratory separator including a screen frame and a screen attachment. The screen attachment including at least one vertically disposed latch on the screen frame, at least one vertically disposed catch on the screen frame, and at least one bearing surface proximate the at least one vertically disposed catch. Additionally, a method of securing adjacent screens including inserting a vertically disposed latch of a first screen into a catch of a second screen, wherein the inserting includes contacting the latch of the first screen with a bearing surface of the second screen adjacent the catch of the second screen. The method further includes forming a planar alignment of the first screen to the second screen.Type: ApplicationFiled: September 30, 2008Publication date: October 28, 2010Applicants: M-I L.L.C., UNITED WIRE LIMITEDInventors: Graham Robertson, Brian S. Carr, Eric Cady, Claire Galloway
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Patent number: 7819254Abstract: A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame is a rectilinear moulded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of moulded plastics material. Some of the ribs are internally reinforced by rigid metal members which extend orthogonally between hollow box-section members which define a sub-frame for reinforcing the four edge regions of the frame. The orthogonal members are secured at their ends to the sub-frame. The ends of the sub-frame members are joined at the four corners of the sub-frame. In this way not are only the edge regions of the frame reinforced internally but so also are some of the orthogonally intersecting ribs, so as thereby to produce a rigid frame for the screen.Type: GrantFiled: December 14, 2005Date of Patent: October 26, 2010Assignee: United Wire LimitedInventor: Graham Alexander Robertson
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Patent number: 7810649Abstract: A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame comprises a rectilinear molded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of molded plastics material. Some of the ribs are internally reinforced by a structure comprising two spaced apart layers of orthogonal intersecting spaced apart wires, running parallel to the length and breadth of the rectilinear shape of the frame within the ribs to increase their rigidity. The edge regions of the frame are reinforced internally by metal box-section members joined at their four corners and defining perimeter reinforcement, and the ends of the wires are secured to the box-section members.Type: GrantFiled: December 14, 2005Date of Patent: October 12, 2010Assignee: United Wire LimitedInventor: Graham Alexander Robertson
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Publication number: 20100219110Abstract: A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame is a rectilinear moulded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of moulded plastics material. Some of the ribs are internally reinforced by rigid metal members which extend orthogonally between hollow box-section members which define a sub-frame for reinforcing the four edge regions of the frame. The orthogonal members are secured at their ends to the sub-frame. The ends of the sub-frame members are joined at the four corners of the sub-frame. In this way not are only the edge regions of the frame reinforced internally but so also are some of the orthogonally intersecting ribs, so as thereby to produce a rigid frame for the screen.Type: ApplicationFiled: May 17, 2010Publication date: September 2, 2010Applicant: UNITED WIRE LIMITEDInventor: Graham Alexander Robertson
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Publication number: 20100201081Abstract: There is provided a plug (1) for repairing a sifting or filtering screen, the plug having at least one line of weakening (5) which can be ruptured whereby the plug has a plurality of possible plug sizes so that the plug is capable of plugging at least two different sizes of cell of the screen. Each possible plug size has a seal (2) extending around the complete periphery of the chosen plug size, in use the seal serving to engage and seal against the screen in order to plug a cell aligned with a damaged area of the screen.Type: ApplicationFiled: July 1, 2008Publication date: August 12, 2010Applicant: UNITED WIRE LIMITEDInventor: Andrew Ralph
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Publication number: 20100187773Abstract: There is provided a plug for repairing a sifting or filtering screen, the plug comprising a body (1) of a first material supporting an area of a second material which is more resilient than the first material, in use the area of a second material serving as a seal (2) to engage and seal against the screen in order to plug a cell aligned with a damaged area of the screen. A second plug has a body (101) formed with holes (108) to receive securing members such as screws, the holes being positioned to enable the securing members (109) to pass into the material of the sifting or filtering screen in order releasably to secure the plug in a cell aligned with a damaged area of the sifting screen.Type: ApplicationFiled: July 1, 2008Publication date: July 29, 2010Applicant: United Wire LimitedInventors: Graham Robertson, Claire Galloway, Andrew Ralph
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Publication number: 20080078703Abstract: A shaker screen including a composite frame, a removable grid attached to the composite frame, and at least one filtering element attached to the removable grid is disclosed. A method including forming a composite frame, forming a removable grid, attaching at least one filtering element to the removable grid, and attaching the removable grid to the composite frame is disclosed. Additionally, a method for rebuilding a shaker screen, the method including removing a first screen assembly from a composite frame, the screen assembly having a removable grid and at least one filtering element, and attaching a second screen assembly to the composite frame is disclosed.Type: ApplicationFiled: September 21, 2007Publication date: April 3, 2008Applicants: M-I LLC, United Wire LimitedInventor: Graham Robertson
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Patent number: 7316321Abstract: A screen for use in a vibratory machine for separating particulate material from liquid material comprising a rigid rectangular support frame having flanges along all four edges to which screen cloths of the type described are bonded with the longer dimension of the rectangular openings defined by the warp and weft wires of the cloth parallel to the longer dimension of the frame. The frame includes an array orthogonal rigid interstices defining a plurality of similar sized rectangular openings or window and the cloths are also bonded to the interstices for the purpose of maintaining the length to width ratio of the openings in the cloths defined by the warp and weft wires thereof. The warp and weft wires of the cloths are tensioned before being bonded to the flanges and interstices.Type: GrantFiled: November 5, 2002Date of Patent: January 8, 2008Assignee: United Wire LimitedInventors: Graham Robertson, Caspar Hassall
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Patent number: 7306022Abstract: In a method of and apparatus for manufacturing a filtering screen, a frame of plastics coated metal or reinforced plastics material is located in a jig and at least two sheets of wire cloths are placed over the frame and their edges gripped by pneumatically operated clamps carried by the jig. The clamps are pneumatically driven outwardly of the frame to tension each cloth in orthogonal directions. The tensioned cloths are pressed against the frame and heated in order to bond the cloths to the frame. The heated material is allowed to cool, and after completion of the bonding step the clamps are released, allowing the frame to be removed from the jig. Where necessary the cloths are trimmed back to the edges of the frame. A separate set of pneumatically operated clamps may be provided for gripping all four edges of each wire cloth layer to allow each layer to be individually tensioned.Type: GrantFiled: November 12, 2002Date of Patent: December 11, 2007Assignee: United Wire LimitedInventors: Andrew Hughes, Morton Barrowmore Auld