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公开(公告)号：US12053800B1
公开(公告)日：2024-08-06
申请号：US18493624
申请日：2023-10-24
申请人： Derrick Corporation
发明人： Christian Newman , Michael Peresan , Daniel P. Jenkins , Keith Wojciechowski , William H. Gross
IPC分类号： B07B1/46
CPC分类号： B07B1/4609 , B07B2201/02
摘要： A vibratory screening machine includes replaceable screen assemblies. Compression mechanisms are used to secure replaceable screen assemblies to the vibratory screening machine. Each compression mechanism applies a force to a replaceable screen assembly that includes both a horizontal component and a downward vertical component. Each replaceable screen assembly is typically substantially flat prior to installation on a vibratory screening machine. The force applied to a screen assembly by one or more compression mechanisms causes the screen assembly to be pushed into engagement with underlying concave support members such that the screen assembly itself assumes a concave shape with the center of the screen assembly being lower than the side edges. The vertical downward component of the force helps to secure the screen assembly to the screening machine.
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公开(公告)号：US12042822B2
公开(公告)日：2024-07-23
申请号：US18141037
申请日：2023-04-28
申请人： Derrick Corporation
CPC分类号： B07B1/4618 , B01D29/012 , B07B1/46 , B07B1/4609 , B07B1/4645 , B07B1/4654 , B07B1/4663 , B07B1/469 , B29C45/0001 , B29C65/16 , B29D28/00 , B07B1/48 , B29K2075/00
摘要： A disclosed screening apparatus includes a subgrid, and a screen element attached to the subgrid via laser welding at a plurality of attachment positions such that, under vibrational excitation, the screen element has a pre-determined profile of vibrational motion relative to the subgrid. The screen element may be attached at a maximal number of attachment locations to the subgrid to minimize relative motion of the screen element and the subgrid under vibrational excitation, or the screen element may be attached a sub-set of the maximal number of attachment locations to allow vibrational motion of the screen element relative to the subgrid. A disclosed method may include attaching a plurality of screen elements to a respective plurality of subgrids, attaching the plurality of subgrids to one another to form a screening pre-assembly, and cutting edges of the screening pre-assembly to form the screen assembly having a perimeter with a pre-determined shape.
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公开(公告)号：US11000882B2
公开(公告)日：2021-05-11
申请号：US16743626
申请日：2020-01-15
申请人： Derrick Corporation
发明人： Keith Wojciechowski
摘要： Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
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公开(公告)号：US20200156116A1
公开(公告)日：2020-05-21
申请号：US16743626
申请日：2020-01-15
申请人： Derrick Corporation
发明人： Keith Wojciechowski
摘要： Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
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公开(公告)号：US20200156115A1
公开(公告)日：2020-05-21
申请号：US16743516
申请日：2020-01-15
申请人： Derrick Corporation
发明人： Keith Wojciechowski
摘要： Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
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公开(公告)号：US20190321856A1
公开(公告)日：2019-10-24
申请号：US16503331
申请日：2019-07-03
申请人： Derrick Corporation
摘要： A vibratory screening machine includes a primary screening area and a pre-screening assembly including a frame and screen assemblies. The screen assemblies are secured to the frame and form a pre-screening surface. The frame is attached to the vibratory screening machine such that the concave pre-screening surface is above the primary screening area.
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公开(公告)号：US10363577B2
公开(公告)日：2019-07-30
申请号：US15873582
申请日：2018-01-17
申请人： Derrick Corporation
摘要： A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
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公开(公告)号：US20180312667A1
公开(公告)日：2018-11-01
申请号：US15965363
申请日：2018-04-27
申请人： Derrick Corporation
IPC分类号： C08K7/14 , C08K5/134 , C08K5/20 , C08G18/10 , C08G18/76 , B01D21/28 , B29B7/90 , B29C45/00 , B29C45/40
摘要： Thermoplastic polyurethane (TPU) compositions, methods for producing TPU compositions, methods of using TPU compositions, and apparatuses produced therefrom are disclosed. Disclosed TPU compositions include a thermoplastic polyurethane polymer, a heat stabilizer, a flow agent, and a filler material. The filler may be a glass fiber. Disclosed TPU compositions have improved thermal stability and improved flow properties suitable for injection molding of articles of manufacture having a large plurality of fine openings or pores. Articles produced from the composition have superior thermal stability, abrasion resistance, and chemical resistance. Example articles include screening members for vibratory screening machines.
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公开(公告)号：US09956591B2
公开(公告)日：2018-05-01
申请号：US14882211
申请日：2015-10-13
申请人： Derrick Corporation
CPC分类号： B07B1/485 , B07B1/28 , B07B1/4609 , B07B1/4618 , B07B1/4672 , B07B1/48 , B07B1/49
摘要： A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
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公开(公告)号：US09370798B2
公开(公告)日：2016-06-21
申请号：US14618121
申请日：2015-02-10
申请人： Derrick Corporation
CPC分类号： B07B1/48 , B07B1/28 , B07B1/4609 , B07B1/485 , B07B2201/02
摘要： A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
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