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公开(公告)号：US10603692B2
公开(公告)日：2020-03-31
申请号：US15917090
申请日：2018-03-09
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：US10350640B2
公开(公告)日：2019-07-16
申请号：US13860116
申请日：2013-04-10
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：US20180193882A1
公开(公告)日：2018-07-12
申请号：US15917090
申请日：2018-03-09
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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公开(公告)号：US09346081B2
公开(公告)日：2016-05-24
申请号：US14618808
申请日：2015-02-10
申请人： Derrick Corporation
CPC分类号： B07B1/4645 , B07B1/28 , B07B1/4609 , B07B1/48 , 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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公开(公告)号：US09027760B2
公开(公告)日：2015-05-12
申请号：US13653162
申请日：2012-10-16
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.
摘要翻译： 筛选机包括壁构件，筛组件引导构件，筛组件和压缩组件。 屏幕组件包括具有多个侧构件的框架和由框架支撑的屏幕。 压缩组件附接到至少一个壁构件并将屏幕组件形成为凹形。
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公开(公告)号：US20150041371A1
公开(公告)日：2015-02-12
申请号：US14522207
申请日：2014-10-23
申请人： Derrick Corporation
CPC分类号： B07B1/48 , B07B1/28 , B07B1/4609 , B07B1/4618 , B07B1/4645 , B07B1/485 , B07B1/49 , B07B2201/02 , Y10T29/49908
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.
摘要翻译： 筛选机包括壁构件，筛组件引导构件，筛组件和压缩组件。 屏幕组件包括具有多个侧构件的框架和由框架支撑的屏幕。 压缩组件附接到至少一个壁构件并将屏幕组件形成为凹形。
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公开(公告)号：US11958077B1
公开(公告)日：2024-04-16
申请号：US18493250
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：US11890647B1
公开(公告)日：2024-02-06
申请号：US18347245
申请日：2023-07-05
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：US11638933B2
公开(公告)日：2023-05-02
申请号：US17389070
申请日：2021-07-29
申请人： DERRICK CORPORATION
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：US11505638B2
公开(公告)日：2022-11-22
申请号：US16904819
申请日：2020-06-18
申请人： DERRICK CORPORATION
IPC分类号： B29D28/00 , B01D1/00 , C08G18/10 , C08G18/32 , C08G18/42 , B07B1/46 , B29B9/14 , B01D39/16 , B29B7/90 , B07B1/00 , C08K3/40 , C08K5/00 , C08K7/14
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. Further embodiments include compositions without heat stabilizers, flow agents, and filler materials, and compositions in which two TPU materials having different harnesses are combined to generate a material with a pre-determined hardness. Injection molded screen elements having openings from 25 to 150 microns and open screening area from 10% to 35% are disclosed.
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