Patents by Inventor Maciej Brelski
Maciej Brelski 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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Publication number: 20220305710Abstract: A co-injection hot runner nozzle comprises an inner melt flow channel and an annular outer melt flow channel that surrounds the inner melt flow channel. The inner and outer melt flow channels have a first common source. The nozzle further comprises an annular intermediate melt flow channel disposed between the inner and outer melt flow channels. The annular intermediate melt flow channel is at least partly defined by a plurality of spiral grooves, each spiral groove having a respective inlet and defining a helical flow path. Lands between adjacent spiral grooves increase in clearance in a downstream direction. An annular axial flow path is defined over the lands. A plurality of feeder channels having a second common source is configured to supply melt to the plurality of inlets of the spiral grooves. The relationship of feeder channels to spiral grooves may be one-to-one. The inlets may be longitudinal channels.Type: ApplicationFiled: June 13, 2022Publication date: September 29, 2022Inventors: ABDESLAM BOUTI, Hakimuddin Boxwala, Nathan Gabriel Southwick, Maciej Brelski, Dietmar Tiemo Brand, Adam Christopher Ulemek, Dirk Holger Schlums
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Patent number: 11358313Abstract: A co-injection hot runner nozzle comprises an inner melt flow channel and an annular outer melt flow channel that surrounds the inner melt flow channel. The inner and outer melt flow channels have a first common source. The nozzle further comprises an annular intermediate melt flow channel disposed between the inner and outer melt flow channels. The annular intermediate melt flow channel is at least partly defined by a plurality of spiral grooves, each spiral groove having a respective inlet and defining a helical flow path. Lands between adjacent spiral grooves increase in clearance in a downstream direction. An annular axial flow path is defined over the lands. A plurality of feeder channels having a second common source is configured to supply melt to the plurality of inlets of the spiral grooves. The relationship of feeder channels to spiral grooves may be one-to-one. The inlets may be longitudinal channels.Type: GrantFiled: January 12, 2018Date of Patent: June 14, 2022Assignee: HUSKY INJECTION MOLDING SYSTEMS LTD.Inventors: Abdeslam Bouti, Hakimuddin Boxwala, Nathan Gabriel Southwick, Maciej Brelski, Dietmar Tierno Brand, Adam Christopher Ulemek, Dirk Holger Schlums
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Patent number: 11104049Abstract: A hot runner nozzle includes a nozzle body, an annular outlet channel in the nozzle body, a source channel upstream of the annular outlet channel in the nozzle body, and a flow transition channel in the nozzle body. The flow transition channel interconnects the source channel with a part-annular segment of the annular outlet channel. The flow transition channel widens in a downstream direction and has a non-uniform cross-sectional channel thickness in either or both of the longitudinal (downstream) and transverse directions. The geometry of the flow transition channel may promote at least one of a uniform velocity profile and a uniform temperature profile in a generated annular or part-annular melt flow.Type: GrantFiled: November 8, 2017Date of Patent: August 31, 2021Assignee: Husky Injection Molding Systems Ltd.Inventors: Adam Christopher Ulemek, Stephen Daniel Ferenc, Maciej Brelski, Wesley Grove
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Publication number: 20200262121Abstract: A hot runner nozzle includes a nozzle body, an annular outlet channel in the nozzle body, a source channel upstream of the annular outlet channel in the nozzle body, and a flow transition channel in the nozzle body. The flow transition channel interconnects the source channel with a part-annular segment of the annular outlet channel. The flow transition channel widens in a downstream direction and has a non-uniform cross-sectional channel thickness in either or both of the longitudinal (downstream) and transverse directions. The geometry of the flow transition channel may promote at least one of a uniform velocity profile and a uniform temperature profile in a generated annular or part-annular melt flow.Type: ApplicationFiled: November 8, 2017Publication date: August 20, 2020Inventors: Adam Christopher ULEMEK, Stephen Daniel FERENC, Maciej BRELSKI, Wesley GROVE
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Publication number: 20190389109Abstract: A co-injection hot runner nozzle comprises an inner melt flow channel and an annular outer melt flow channel that surrounds the inner melt flow channel. The inner and outer melt flow channels have a first common source. The nozzle further comprises an annular intermediate melt flow channel disposed between the inner and outer melt flow channels. The annular intermediate melt flow channel is at least partly defined by a plurality of spiral grooves, each spiral groove having a respective inlet and defining a helical flow path. Lands between adjacent spiral grooves increase in clearance in a downstream direction. An annular axial flow path is defined over the lands. A plurality of feeder channels having a second common source is configured to supply melt to the plurality of inlets of the spiral grooves. The relationship of feeder channels to spiral grooves may be one-to-one. The inlets may be longitudinal channels.Type: ApplicationFiled: January 12, 2018Publication date: December 26, 2019Inventors: Abdeslam BOUTI, Hakimuddin BOXWALA, Nathan Gabriel SOUTHWICK, Maciej BRELSKI, Dietmar Tiemo BRAND, Adam Christopher ULEMEK, Dirk Holger SCHLUMS
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Publication number: 20130068980Abstract: A rotary valve assembly is provided for an injection unit, comprising a valve body defining a melt channel for a working fluid. The valve body and at least one end cap define a valve seat having a wider diameter portion and at least one thinner diameter portion. A spool assembly is rotatably mounted within the valve seat and movable between an open position where an orifice is aligned with the melt channel and a closed position where the orifice is misaligned with the melt channel. The spool assembly includes a center spool portion defining the orifice, and at least one arm spool portion connected on a side of the center spool portion, the at least one arm spool portion being translatable relative to the center spool portion by the working fluid entering the gap located therebetween.Type: ApplicationFiled: October 28, 2010Publication date: March 21, 2013Applicant: Husky Injection Molding Systems Ltd.Inventor: Maciej Brelski
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Patent number: 8348661Abstract: A check valve (36, 136) for a screw (24) is provided. The check valve (36, 136) includes a retainer tip (54, 154), operable to be attached to a distal end of a screw shaft (52, 152), the retainer tip (54, 154) defining at least one melt channel (30). A first ring (60) is coaxially mounted to and rotationally-coupled with the retainer tip (54, 154). A second ring (66) is coaxially and slidably mounted to the retainer tip (54, 154), and is operable to rotate relative to the retainer tip (54, 154). The second ring (66) is operable to reversibly move between an open position which permits melt to flow through the check valve (36, 136) and a closed position which prevents backflow of the melt.Type: GrantFiled: November 23, 2009Date of Patent: January 8, 2013Assignee: Husky Injection Molding Systems Ltd.Inventors: Maciej Brelski, Christophe Halter
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Publication number: 20110229597Abstract: A check valve (36, 136) for a screw (24) is provided. The check valve (36, 136) includes a retainer tip (54, 154), operable to be attached to a distal end of a screw shaft (52, 152), the retainer tip (54, 154) defining at least one melt channel (30). A first ring (60) is coaxially mounted to and rotationally-coupled with the retainer tip (54, 154). A second ring (66) is coaxially and slidably mounted to the retainer tip (54, 154), and is operable to rotate relative to the retainer tip (54, 154). The second ring (66) is operable to reversibly move between an open position which permits melt to flow through the check valve (36, 136) and a closed position which prevents backflow of the melt.Type: ApplicationFiled: November 23, 2009Publication date: September 22, 2011Applicant: Husky Injection Molding Systems Ltd.Inventors: Maciej Brelski, Christophe Halter
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Patent number: 7198400Abstract: A static mixer comprising a mixer body with a first and a second array of intermeshed and interconnecting passageways formed therein that connect, and provide a convoluted flow path between, flow faces at ends of the mixer body. The first and second arrays of passageways preferably interconnect such that the boundaries of adjacent intermeshed passageways overlap to form mixing portals. When used in an injection molding system, a singular melt flow is initially divided at the first flow face of the static mixer, wherein the melt flow divides into the intermeshing passageways and further divides and re-combines at the locations of mixing portals before exiting the static mixer at the second flow face as homogenized melt.Type: GrantFiled: May 3, 2003Date of Patent: April 3, 2007Assignee: Husky Injection Molding Systems Ltd.Inventors: Richard Unterlander, Maciej Brelski, Robert Schad, Peter Lacza, Denise Craig
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Publication number: 20040218469Abstract: A static mixer comprising a mixer body with a first and a second array of intermeshed and interconnecting passageways formed therein that connect, and provide a convoluted flow path between, flow faces at ends of the mixer body. The first and second arrays of passageways preferably interconnect such that the boundaries of adjacent intermeshed passageways overlap to form mixing portals. When used in an injection molding system, a singular melt flow is initially divided at the first flow face of the static mixer, wherein the melt flow divides into the intermeshing passageways and further divides and re-combines at the locations of mixing portals before exiting the static mixer at the second flow face as homogenized melt.Type: ApplicationFiled: May 3, 2003Publication date: November 4, 2004Applicant: Husky Injection Molding Systems LTDInventors: Richard M. Unterlander, Maciej Brelski, Robert D. Schad, Peter Anthony Lacza, Denise Davina Craig