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公开(公告)号：US20160178027A1
公开(公告)日：2016-06-23
申请号：US15057944
申请日：2016-03-01
Inventor： Eric D. Wetzel , Paul T. Nenno
CPC classification number: F16F13/08 , A61F5/0109 , A61F5/0123 , A61F5/0125
Abstract: Rate-dependent, elastically-deformable devices according to various embodiments can be stretched and recovered at low elongation rates. Yet they become stiff and resistive to stretching at high elongation rates. In one embodiment, a rate-dependent, elastically-deformable device includes an elastically-deformable confinement member; one or more filaments placed inside the elastically-deformable confinement member; and a fluid that substantially fills the remaining volume inside the elastically-deformable confinement member. The resistance force to extension of the device is designed to increase as the extension rate of the device increases. At low elongation rates the filaments can readily slide past each other. At high elongation rates, the fluid transforms to a less flowable material that greatly increases the force and energy required for elongation; or transforms to a non-flowable material that resists elongation. The devices thus can be stretched and recovered at low elongation rates, but become extremely stiff and resistive to stretching at high elongation rates.
Abstract translation: 根据各种实施例的依赖于速率的可弹性变形的装置可以以低伸长率被拉伸和回收。 然而它们变得坚硬并且在高伸长率下具有抗拉伸性。 在一个实施例中，速率依赖性，可弹性变形的装置包括可弹性变形的限制构件; 一个或多个细丝放置在可弹性变形的限制构件的内部; 以及基本上填充可弹性变形的限制构件内的剩余容积的流体。 设备的延伸阻力被设计为随着设备的扩展速率的增加而增加。 在低伸长率下，长丝可以容易地滑过彼此。 在高伸长率下，流体转变为较不易流动的材料，大大增加了伸长所需的力和能量; 或转变成阻止伸长的不可流动材料。 因此，这些装置可以以低伸长率被拉伸和回收，但是变得非常硬并且在高伸长率下不能拉伸。
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公开(公告)号：US20140015176A1
公开(公告)日：2014-01-16
申请号：US13927985
申请日：2013-06-26
Inventor： Eric D. Wetzel , Paul T. Nenno
IPC: F16F13/00
CPC classification number: F16F13/002 , A61F5/0123 , F16F13/08
Abstract: Rate-dependent, elastically-deformable devices according to various embodiments can be stretched and recovered at low elongation rates. Yet they become stiff and resistive to stretching at high elongation rates. In one embodiment, a rate-dependent, elastically-deformable device includes an elastically-deformable confinement member; one or more filaments placed inside the elastically-deformable confinement member; and a fluid that substantially fills the remaining volume inside the elastically-deformable confinement member. The resistance force to extension of the device is designed to increase as the extension rate of the device increases. At low elongation rates the filaments can readily slide past each other. At high elongation rates, the fluid transforms to a less flowable material that greatly increases the force and energy required for elongation; or transforms to a non-flowable material that resists elongation. The devices thus can be stretched and recovered at low elongation rates, but become extremely stiff and resistive to stretching at high elongation rates.
Abstract translation: 根据各种实施例的依赖于速率的可弹性变形的装置可以以低伸长率被拉伸和回收。 然而它们变得坚硬并且在高伸长率下具有抗拉伸性。 在一个实施例中，速率依赖性，可弹性变形的装置包括可弹性变形的限制构件; 一个或多个细丝放置在可弹性变形的限制构件的内部; 以及基本上填充可弹性变形的限制构件内的剩余容积的流体。 设备的延伸阻力被设计为随着设备的扩展速率的增加而增加。 在低伸长率下，长丝可以容易地滑过彼此。 在高伸长率下，流体转变为较不易流动的材料，大大增加了伸长所需的力和能量; 或转变成阻止伸长的不可流动材料。 因此，这些装置可以以低伸长率被拉伸和回收，但是变得非常硬并且在高伸长率下不能拉伸。
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公开(公告)号：US20220033998A1
公开(公告)日：2022-02-03
申请号：US16814353
申请日：2020-03-10
Inventor： Eric D. Wetzel , Kevin R. Hart , Ryan M. Dunn
IPC: D01F8/14 , B29C64/106 , B29C55/00 , B29C35/02 , D01F8/10 , D01F8/18 , D01F8/00 , B33Y70/00 , D01D5/30 , D01D5/24 , B29C64/118 , B29C65/00 , B29D11/00 , B29C65/56
Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a geometric arrangement is described. A method for producing such a filament is also described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of a filament or fiber with a wide range of applications. A method is also described for including an interior thread that adds structural reinforcement or functional properties, such as electrical conductivity or optical waveguiding, to the filament.
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公开(公告)号：US20160254093A1
公开(公告)日：2016-09-01
申请号：US14633616
申请日：2015-02-27
Inventor： Daniel M. Baechle , Daniel J. O'Brien , Eric D. Wetzel , Oleg B. Yurchak
Abstract: A structural capacitor having a plurality of planar dielectric layers and a plurality of positive and negative electrodes with the positive and negative electrodes alternating between each dielectric layer. First and second spaced apart holes are provided through each dielectric layer as well as the electrodes so that the first holes in the electrodes register with the first holes in the dielectric layer and likewise for the second holes. The capacitor is formed by stacking the dielectric layers and electrodes on two spaced apart alignment pins with a positive alignment pin extending through the first holes and a negative alignment pin extending through the second holes in the dielectric layers and electrodes. These alignment pins maintain layer alignment during subsequent thermal and pressure processing to bond together the dielectric and electrode layers into an integral structural material. After processing, the alignment pins are removed and replaced with electrode pins, where the positive electrode pin is in electrical contact only with the positive electrodes and the negative electrode pin is in electrical contact only with the negative electrodes. The electrode pins are used for subsequent electrical and mechanical connectorization to the structural capacitor.
Abstract translation: 具有多个平面介质层和多个正极和负极的结构电容器，其中正极和负极在每个电介质层之间交替。 通过每个电介质层以及电极提供第一和第二间隔开的孔，使得电极中的第一孔与电介质层中的第一孔对准，同样用于第二孔。 电容器通过将介电层和电极堆叠在两个间隔开的对准销上并通过延伸穿过第一孔的正对准销和延伸穿过介电层和电极中的第二孔的负对准销来形成。 这些对准销在随后的热和压力处理期间保持层对准，以将电介质层和电极层结合在一体的结构材料中。 在处理之后，对准引脚被移除并且被电极引脚替代，其中正电极引脚只与正极电接触，而负电极引脚仅与负极电接触。 电极引脚用于随后的电气和机械连接到结构电容器。
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公开(公告)号：US20210292934A1
公开(公告)日：2021-09-23
申请号：US17219697
申请日：2021-03-31
Inventor： Eric D. Wetzel , Larry R. Holmes, JR. , Ricardo X. Rodriguez , Patrick M. Toal, JR.
IPC: D01F8/00 , C03B37/028 , B33Y70/00 , C03B37/027 , D01D5/30 , G02B6/00 , C03B19/00 , G02B6/02 , B29C65/00 , B29D11/00 , B29C65/56
Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.
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Patent Agency Ranking
公开(公告)号：US20200022443A1
公开(公告)日：2020-01-23
申请号：US16295101
申请日：2019-03-07
Inventor： Eric D. Wetzel , Devon J. Spinelli , Thomas A. J. Plaisted
Abstract: Impact energy absorbing devices, in some embodiments, may be configured as a helmet having suspension elements employing “rate activated tethers” (RATs), a speed-sensitive flexible strapping material. The RATs are configured to suspend a helmet shell on the head of a wearer, so that impact to the helmet causes extension of the RATs. The RATs provide for: (1) steady force over long strokes, and (2) a stroke force that increases with increasing impact velocity. Standard impact testing of a helmeted headform shows that the RAT suspension decreases head accelerations by 50% relative to a standard suspension system. This decrease in head acceleration is expected to lead to a reduced likelihood of brain and head injury. Because the RATs absorb energy during tensile extension, they offer increases in energy absorption efficiency. These RAT suspensions can potentially replace or complement existing helmet pad and suspension systems in military, sports, and industrial safety-wear.
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公开(公告)号：US09959974B2
公开(公告)日：2018-05-01
申请号：US14633616
申请日：2015-02-27
Inventor： Daniel M. Baechle , Daniel J. O'Brien , Eric D. Wetzel , Oleg B. Yurchak
Abstract: A structural capacitor having a plurality of planar dielectric layers and a plurality of positive and negative electrodes with the positive and negative electrodes alternating between each dielectric layer and methods for making structural capacitors are provided. First and second spaced apart holes are provided through each dielectric layer as well as the electrodes so that the first holes in the electrodes register with the first holes in the dielectric layer and likewise for the second holes. The capacitor is formed by stacking the dielectric layers and electrodes on two spaced apart alignment pins with a positive alignment pin extending through the first holes and a negative alignment pin extending through the second holes in the dielectric layers and electrodes. These alignment pins maintain layer alignment during subsequent thermal and pressure processing to bond together the dielectric and electrode layers into an integral structural material. After processing, the alignment pins are removed and replaced with electrode pins, where the positive electrode pin is in electrical contact only with the positive electrodes and the negative electrode pin is in electrical contact only with the negative electrodes. The electrode pins are used for subsequent electrical and mechanical connectorization to the structural capacitor.
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8.发明申请公开(公告)号：US20180087189A1
公开(公告)日：2018-03-29
申请号：US15630175
申请日：2017-06-22
Inventor： Eric D. Wetzel , Larry R. Holmes, JR. , Ricardo X. Rodriguez , Patrick M. Toal, JR.
CPC classification number: D01F8/14 , B29C35/02 , B29C55/00 , B29C64/106 , B29K2033/12 , B29K2055/02 , B29K2069/00 , B29K2105/08 , B29L2031/731 , B33Y70/00 , D01D5/24 , D01D5/30 , D01F8/00 , D01F8/10 , D01F8/18 , D10B2321/08 , D10B2321/10 , D10B2331/04 , G02B6/02033
Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a geometric arrangement and an interior channel containing a structural or functional thread therein is described. A method for producing such a filament is also described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of a filament or fiber with an interior thread contained within the outer, printed filament or fiber. This thread adds structural reinforcement or functional properties, such as electrical conductivity or optical waveguiding, to the filament.
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9.发明申请公开(公告)号：US20170240706A1
公开(公告)日：2017-08-24
申请号：US15434391
申请日：2017-02-16
Inventor： Eric D. Wetzel , Emil Jose Sandoz-Rosado , Todd David Beaudet , Radhakrishnan Balu , John Joseph La Scala , Dominika Nini Lastovickova
Abstract: A family of new and novel molecules for mechanically superior two-dimensional (2D) polymers is described herein. By combining stiff carbon-containing cyclic polymer nodal units with more compliant linear polymer bridge units in an ordered, 2D repeating molecular structure it is possible to tailor the mechanical properties of 2D polymers and their assemblies to provide high stiffness, strength, and toughness. Furthermore, the inherent dimensionality of 2D polymers and their ability to be stacked into ordered and chemically interactive ensembles gives them inherent benefits in a variety of barrier and structural applications over current stiff and strong linear polymer technologies.
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公开(公告)号：US11229253B2
公开(公告)日：2022-01-25
申请号：US16295101
申请日：2019-03-07
Inventor： Eric D. Wetzel , Devon J. Spinelli , Thomas A. J. Plaisted
Abstract: Impact energy absorbing devices, in some embodiments, may be configured as a helmet having suspension elements employing “rate activated tethers” (RATs), a speed-sensitive flexible strapping material. The RATs are configured to suspend a helmet shell on the head of a wearer, so that impact to the helmet causes extension of the RATs. The RATs provide for: (1) steady force over long strokes, and (2) a stroke force that increases with increasing impact velocity. Standard impact testing of a helmeted headform shows that the RAT suspension decreases head accelerations by 50% relative to a standard suspension system. This decrease in head acceleration is expected to lead to a reduced likelihood of brain and head injury. Because the RATs absorb energy during tensile extension, they offer increases in energy absorption efficiency. These RAT suspensions can potentially replace or complement existing helmet pad and suspension systems in military, sports, and industrial safety-wear.
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