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公开(公告)号：US09488562B1
公开(公告)日：2016-11-08
申请号：US14642716
申请日：2015-03-09
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , Ramez Nachman , John Douglas Porter
CPC classification number: G01N3/303 , G01M7/08 , G01N2203/0035
Abstract: An example method includes positioning a mass at a height opposite a modulator characterized by a particular strain rate and support by a carrier moveably disposed opposite the mass. The method also includes releasing the mass such that the mass impacts the modulator, and an additional component connected to the carrier causes failure of a sample of material. The method further includes determining a displacement of the carrier corresponding to failure of the sample, determining a force applied to the modulator by the mass and resulting in failure of the sample, and determining at least one of a dynamic strength of the sample and a dynamic modulus of the sample. In such a method, the dynamic strength is based on the force applied to the modulator and the strain rate. Additionally, the dynamic modulus is based on the displacement of the carrier and the strain rate.
Abstract translation: 一个示例性方法包括将质量定位在与调制器相反的高度处，其特征在于特定的应变速率，并且通过可移动地布置成与质量相对设置的载体来支撑 该方法还包括释放质量使得质量影响调制器，并且连接到载体的附加部件引起材料样品的失效。 该方法还包括确定对应于样品故障的载体的位移，确定通过质量施加到调制器的力并导致样品失效，以及确定样品的动态强度和动态 样品的模量。 在这种方法中，动态强度基于施加到调制器的力和应变率。 另外，动态模量基于载体的位移和应变速率。
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公开(公告)号：US09992592B1
公开(公告)日：2018-06-05
申请号：US14146990
申请日：2014-01-03
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , Ramez Nachman , Vikram Srinivas , Donald Joseph Ashley , Ali-Reza Bahmandar
IPC: H04R29/00
CPC classification number: H04R29/00 , H04R29/001
Abstract: A method of assessing noise involves evacuating air from a vacuum chamber to a pressure less than about 1 Torr and stimulating a device positioned in the chamber by shaking it or by operating a component of the device. Measuring vibrations in a low pressure environment decreases or eliminates propagation of sound waves, thereby enabling isolation and identification of vibrations caused by mechanical noise. These measurements may be useful for more precise acoustic characterization of audio devices containing multiple components.
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公开(公告)号：US09837852B1
公开(公告)日：2017-12-05
申请号：US14577160
申请日：2014-12-19
Applicant: Amazon Technologies, Inc.
Inventor： Christopher Dwight Barnes , Mohammed Aftab Alam
CPC classification number: H02S40/22 , G02B6/0043 , G02B6/0073 , H02J7/355
Abstract: An electronic device with a e-paper display that internally integrates photovoltaic cells and are not apparent from the exterior of the device. A light source of the device injects light into a light guide to front-light the e-paper. Light that leaks from edges of the light guide is captured by the photovoltaic cells. The plastic light guide is also impregnated with a photoluminescent material that absorbs near infrared energy that is incident on a face of the display and re-emits it isotropically to be guided by the light guide to the photovoltaic cells. By combining multiple techniques to illuminate hidden photovoltaic cells, the utility of the hidden cells is maximized.
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公开(公告)号：US10067065B1
公开(公告)日：2018-09-04
申请号：US14311585
申请日：2014-06-23
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , Vikram Srinivas , Nageswara Rao Tadepalli , Bobak Ranjbaran , Ramez Nachman
IPC: G01N21/88
Abstract: A cover glass of an electronic device may be inspected for defects and damage such as cracks, fractures, scratches, and chips. The electronic device may be placed in an enclosure with a lighting assembly that emits light to the electronic device, and scattered light from defects and damage of the cover glass is captured by an imaging device. A shutter assembly facilitates the capture of scattered light and reduces the capture of reflected light, which enhances the exposure of defects and damage of the captured image of the cover glass. A mirror facilitates the capture of a side surface of the electronic device.
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公开(公告)号：US10041894B1
公开(公告)日：2018-08-07
申请号：US14849471
申请日：2015-09-09
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , Bradley David Urban , Gaurav Soni , Ramez Nachman
IPC: G01N25/18
Abstract: Determining an in-plane thermal conductivity of anisotropic materials, such as display stacks, printed circuit boards (PCBs), and composite housings, includes heating a first region of an anisotropic sample, cooling a second region of the sample, and measuring temperature at a first location between the first region and the second region and a second location between the first region and the second region. The in-plane thermal conductivity of the sample is computed based at least in part on the temperature at the first location, the temperature at the second location, the distance from the first region to the second region, a thickness of the substantially planar anisotropic substrate, and an amount of heat applied to the first region.
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Patent Agency Ranking
公开(公告)号：US09907190B1
公开(公告)日：2018-02-27
申请号：US14613023
申请日：2015-02-03
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , David Eric Peters , Ramez Nachman
CPC classification number: H05K5/0004 , C23C30/00 , C25D5/54
Abstract: This disclosure describes composite structures and method of making the structures. The structures according to this disclosure may be used in handheld electronics. In example embodiments, holes are formed through a planar polymeric core. A metallic coating is disposed on the core to coat external surfaces of the core as well as internal surfaces of the holes. The metallic coating may entirely occlude the holes. The resulting structure may provide improved strength and rigidity and resist delamination of the metallic coating.
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公开(公告)号：US09615163B1
公开(公告)日：2017-04-04
申请号：US14137819
申请日：2013-12-20
Applicant: Amazon Technologies, Inc.
Inventor： Ramez Nachman , Mohammed Aftab Alam
IPC: H04R1/28
CPC classification number: H04R1/2826 , H04R1/2819
Abstract: A loudspeaker port may include tunable physical components to tune the port to different frequencies to improve speaker efficiency at those frequencies. The ports may be activated by at least partly opening associated shutters, or disabled by closing the associated shutters. Activated ports may enhance speaker efficiency in a frequency range. However, activated ports may also introduce sound artifacts, thereby reducing sound quality. Therefore, the ports may be disabled when appropriate to reduce their negative impact to sound quality. A Digital Signal Processor (DSP) may determine the frequency components of a played sound to determine when to open the ports and how to tune the ports. Accordingly, a loudspeaker may benefit from the improved efficiency facilitated by the ports while also avoiding typical drawbacks created by the ports.
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公开(公告)号：US09791257B1
公开(公告)日：2017-10-17
申请号：US14813227
申请日：2015-07-30
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , Ramez Nachman , David Eric Peters , John Espinoza Sanchez, Jr.
IPC: G01B7/06
CPC classification number: G01B7/06
Abstract: Techniques are described to determine a thickness of individual layers of a plurality of metal layers that include a first metal layer disposed on a polymer material and a second metal layer disposed on the first layer, such that the first layer is between the polymer material and the second layer. A measurement device may determine a resistance of the plurality of metal layers and calculate (e.g., estimate) a thickness of the individual layers based on the resistance of the individual layers and based on a resistivity of individual metals used in the plurality of metal layers. The measurement device may determine whether the individual thicknesses are within predetermined thickness ranges to determine whether to pass a quality control test.
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公开(公告)号：US09645064B1
公开(公告)日：2017-05-09
申请号：US14642713
申请日：2015-03-09
Applicant: Amazon Technologies, Inc.
Inventor： Mohammed Aftab Alam , Ramez Nachman , Shankar Ganapathysubramanian , Guruprasad Ramanathan
Abstract: An example method includes positioning a mass at a height opposite a modulator characterized by a particular strain rate and support by a carrier moveably disposed opposite the mass. The method also includes releasing the mass such that the mass impacts the modulator, and an additional component connected to the carrier causes failure of a sample of material. The method further includes determining a displacement of the carrier corresponding to failure of the sample, determining a force applied to the modulator by the mass and resulting in failure of the sample, and determining at least one of a dynamic strength of the sample and a dynamic modulus of the sample. In such a method, the dynamic strength is based on the force applied to the modulator and the strain rate. Additionally, the dynamic modulus is based on the displacement of the carrier and the strain rate.
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公开(公告)号：US09529389B1
公开(公告)日：2016-12-27
申请号：US14496450
申请日：2014-09-25
Applicant: Amazon Technologies, Inc.
CPC classification number: G06F1/1637 , C25D3/00 , C25D7/00 , G06F1/1601 , G06F1/1626 , G06F1/1656 , G06F1/1698 , G06F1/182 , G06F2200/1633
Abstract: A housing of a computing device, such as a computer, laptop computer, cellular phone, personal digital assistant (PDA), tablet computer, electronic reader or e-reader, or other mobile device constructed using a combination of a metal material and a lightweight core material. The housing includes a front housing component including a display and a rear housing coupled to the front housing component with an internal side of the rear housing facing the front housing. The rear housing component includes a core material and a structural material coupled to the core material at strategic locations. For example, the structural material may be located around a periphery of the rear housing, around connection ports of the electronic device, and diagonally across the external side to provide strength and stiffness to the rear housing.
Abstract translation: 诸如计算机，膝上型计算机，蜂窝电话，个人数字助理（PDA），平板计算机，电子阅读器或电子阅读器之类的计算设备的壳体或使用金属材料和轻量级 核心材料。 壳体包括前壳体部件，其包括显示器和联接到前壳体部件的后壳体，后壳体的内侧面向前壳体。 后壳体部件包括芯材料和在重要位置处连接到芯材料的结构材料。 例如，结构材料可以位于后壳体的周边周围，围绕电子设备的连接端口并且对角地位于外侧，以向后壳体提供强度和刚度。
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