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1.发明授权Optical fiber gratings with azimuthal refractive index perturbation, method of fabrication, and devices for tuning, attenuating, switching, and modulating optical signals 失效具有方位角折射率扰动的光纤光栅，制造方法以及用于调谐，衰减，开关和调制光信号的器件公开(公告)号：US06832023B1
公开(公告)日：2004-12-14
申请号：US09860790
申请日：2001-05-18
Applicant: Thomas K. Gaylord , Gregory D. Van Wiggeren , Donald D. Davis , Elias N. Glytsis , Emmanuel Anemogiannis
Inventor： Thomas K. Gaylord , Gregory D. Van Wiggeren , Donald D. Davis , Elias N. Glytsis , Emmanuel Anemogiannis
IPC: G02B634
CPC classification number: G02B6/02085 , G02B6/02142 , G02B6/022
Abstract: The present invention relates to a type of optical fiber grating having an azimuthal refractive-index perturbation. The optical fiber includes a fiber grating that has a plurality of grating elements formed therein. At least one of the grating elements has a spatially varying index of refraction that varies azimuthally about the centerline of the optical fiber. The fiber grating acts as a band-stop optical spectral filter. In addition, since fiber-cladding modes are weakly-guided modes, their power can be easily dissipated by scattering, bending, stretching, and/or rotating the optical fiber. Multiple configurations of these gratings within an optical fiber are given. Methodologies are given for the fabrication of these gratings. Devices are presented which can dynamically attenuate, tune, switch, or modulate the wavelength spectral characteristics of an optical signal.
Abstract translation: 本发明涉及一种具有方位角折射率扰动的光纤光栅。 光纤包括在其中形成有多个光栅元件的光纤光栅。 光栅元件中的至少一个具有空间变化的折射率，其围绕光纤的中心线方位改变。 光纤光栅用作带阻光谱滤波器。 此外，由于光纤包层模式是弱引导模式，它们的功率可以通过散射，弯曲，拉伸和/或旋转光纤而容易地消散。 给出光纤内的这些光栅的多种配置。 给出了制造这些光栅的方法。 可以提供可以动态地衰减，调谐，切换或调制光信号的波长光谱特性的装置。
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2.发明授权
公开(公告)号：US5106175A
公开(公告)日：1992-04-21
申请号：US618109
申请日：1990-11-29
Applicant: Donald D. Davis , William S. Pesto , Albert J. Schepis , Loyce A. Turner
Inventor： Donald D. Davis , William S. Pesto , Albert J. Schepis , Loyce A. Turner
Abstract: An all-dielectric cable (20) or object which is destined to be buried is provided with at least one electronically resonant marker (44). After the cable or object is buried, a tradesperson may locate the cable or object by causing an electromagnetic signal (71), which comprises at least one frequency to be transmitted by a transceiver (60) and to be induced into the electronically resonant marker associated with the cable or object. A return signal (73), which is radiated by the electronically resonant marker at a frequency different from the at least frequency, is received by the transceiver. Characteristics of the return signal provide useful information for the determination of the location of the buried cable or object.
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公开(公告)号：US10989370B2
公开(公告)日：2021-04-27
申请号：US16858998
申请日：2020-04-27
Applicant: Denise Longarzo , Volker Schauz , Donald D. Davis , Kathleen Kennedy Davis
Inventor： Denise Longarzo , Volker Schauz , Donald D. Davis , Kathleen Kennedy Davis
IPC: F21L4/02 , F21V23/04 , F21V3/02 , F21Y115/10 , F21Y113/20
Abstract: There is disclosed a dual-mode lighting device having decorative electronic illumination and optional magnifying device (“lighting device” or “device”). The lighting device incorporates at least two sets of light sources to provide illumination for decorative lighting and for illumination for spot lighting a specific area. The lighting device has a power source, a switch, one or more light sources such as light emitting diodes. The lighting source is bi-directional so that it has the ability to illuminate in both upward and downward direction. An optional lens for magnification expanding across the length and width of the device is housed between the upward and the downward illumination sources.
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公开(公告)号：US06542668B2
公开(公告)日：2003-04-01
申请号：US09848925
申请日：2001-05-03
Applicant: Thomas K. Gaylord , Gregory D. VanWiggeren , Donald D. Davis , Elias N. Glytsis , Emmanuel Anemogiannis
Inventor： Thomas K. Gaylord , Gregory D. VanWiggeren , Donald D. Davis , Elias N. Glytsis , Emmanuel Anemogiannis
IPC: G02B634
CPC classification number: G01N21/4788 , G01D5/35316 , G01D5/35387 , G01N21/552 , G01N2021/7783 , G02B6/02109 , G02B6/02147 , G02B6/02185
Abstract: An apparatus for measuring environmental parameters comprising an optical fiber-based sensor having thermally-induced diffraction gratings therein which are stable at very high temperatures for many hours. The diffraction gratings are, preferably, formed in an optical fiber by exposure to light from an infrared laser and do not degrade at high temperatures. A system for measuring an environmental parameter includes an optical fiber-based sensor, a light source, and a detector. According to a method of measuring an environmental parameter, the optical fiber-based sensor is positioned within a high-temperature environment having a parameter desired for measurement. The light source directs light into the optical fiber-based sensor. The detector measures the differential diffraction of the light output from the optical fiber-based sensor and determines a value of the environmental parameter based, at least in part, upon a known correlation between the differential diffraction and the environmental parameter.
Abstract translation: 一种用于测量环境参数的装置，包括其中具有热诱导衍射光栅的基于光纤的传感器，其在非常高的温度下稳定许多小时。 优选地，衍射光栅通过暴露于来自红外激光的光而在光纤中形成，并且在高温下不会降解。 用于测量环境参数的系统包括基于光纤的传感器，光源和检测器。 根据测定环境参数的方法，基于光纤的传感器位于具有测量所需参数的高温环境中。 光源将光引导到基于光纤的传感器中。 检测器测量来自基于光纤的传感器的光输出的差分衍射，并且至少部分地基于差分衍射和环境参数之间的已知相关性来确定环境参数的值。
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公开(公告)号：US20200340632A1
公开(公告)日：2020-10-29
申请号：US16858998
申请日：2020-04-27
Applicant: Denise Longarzo , Volker Schauz , Donald D. Davis , Kathleen Kennedy Davis
Inventor： Denise Longarzo , Volker Schauz , Donald D. Davis , Kathleen Kennedy Davis
Abstract: There is disclosed a dual-mode lighting device having decorative electronic illumination and optional magnifying device (“lighting device” or “device”). The lighting device incorporates at least two sets of light sources to provide illumination for decorative lighting and for illumination for spot lighting a specific area. The lighting device has a power source, a switch, one or more light sources such as light emitting diodes. The lighting source is bi-directional so that it has the ability to illuminate in both upward and downward direction. An optional lens for magnification expanding across the length and width of the device is housed between the upward and the downward illumination sources.
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Patent Agency Ranking
6.发明授权Optical fiber gratings with azimuthal refractive index perturbation and devices for tuning, attenuating, switching, and modulating optical signals 失效具有方位折射率扰动的光纤光栅和用于调谐，衰减，开关和调制光信号的器件公开(公告)号：US06941039B2
公开(公告)日：2005-09-06
申请号：US10886800
申请日：2004-07-08
Applicant: Thomas K Gaylord , Gregory D. VanWiggeren , Donald D. Davis , Elias N. Glytsis , Emmanuel Anemogiannis
Inventor： Thomas K Gaylord , Gregory D. VanWiggeren , Donald D. Davis , Elias N. Glytsis , Emmanuel Anemogiannis
CPC classification number: G02B6/02085 , G02B6/02142 , G02B6/022
Abstract: The present invention relates to a type of optical fiber grating having an azimuthal refractive-index perturbation. The optical fiber includes a fiber grating that has a plurality of grating elements formed therein. At least one of the grating elements has a spatially varying index of refraction that varies azimuthally about the centerline of the optical fiber. The fiber grating acts as a band-stop optical spectral filter. In addition, since fiber-cladding modes are weakly-guided modes, their power can be easily dissipated by scattering, bending, stretching, and/or rotating the optical fiber. Multiple configurations of these gratings within an optical fiber are given. Devices are presented which can dynamically attenuate, tune, switch, or modulate the wavelength spectral characteristics of an optical signal.
Abstract translation: 本发明涉及一种具有方位角折射率扰动的光纤光栅。 光纤包括在其中形成有多个光栅元件的光纤光栅。 光栅元件中的至少一个具有空间变化的折射率，其围绕光纤的中心线方位改变。 光纤光栅用作带阻光谱滤波器。 此外，由于光纤包层模式是弱引导模式，它们的功率可以通过散射，弯曲，拉伸和/或旋转光纤而容易地消散。 给出光纤内的这些光栅的多种配置。 可以提供可以动态地衰减，调谐，切换或调制光信号的波长光谱特性的装置。
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公开(公告)号：US5152032A
公开(公告)日：1992-10-06
申请号：US704804
申请日：1991-05-23
Applicant: Donald D. Davis , William P. Newton , Norman R. Westfall
Inventor： Donald D. Davis , William P. Newton , Norman R. Westfall
CPC classification number: E05D13/12 , E05Y2800/22 , E05Y2900/148 , Y10S16/16 , Y10T16/64
Abstract: A spring balance for counteracting the weight of heavy window sashes includes both a torsion spring and a tension spring. The two springs are separated by a rigid tube. One end of each spring is connected to an end of the rigid tube. A spiral member engages a follower carried by the other end of the torsion spring and includes a stop along its length for engaging an anchor carried by the other end of the tension spring. The spiral member can be attached by conventional means to a shoe or other connection to the window sash.
Abstract translation: 用于抵抗重型窗扇重量的弹簧平衡包括扭转弹簧和拉伸弹簧。 两个弹簧由刚性管分开。 每个弹簧的一端连接到刚性管的一端。 螺旋构件与由扭转弹簧的另一端承载的随动件接合，并且包括沿其长度的止动件，用于接合由拉伸弹簧的另一端承载的锚固件。 螺旋构件可以通过常规方式附接到鞋子或与窗扇的其它连接。
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公开(公告)号：US20210247037A1
公开(公告)日：2021-08-12
申请号：US17241761
申请日：2021-04-27
Applicant: Denise Longarzo , Volker Schauz , Donald D. Davis , Kathleen Kennedy Davis
Inventor： Denise Longarzo , Volker Schauz , Donald D. Davis , Kathleen Kennedy Davis
Abstract: There is disclosed a dual-mode lighting device having decorative electronic illumination and optional magnifying device (“lighting device” or “device”). The lighting device incorporates at least two sets of light sources to provide illumination for decorative lighting and for illumination for spot lighting a specific area. The lighting device has a power source, a switch, one or more light sources such as light emitting diodes. The lighting source is bi-directional so that it has the ability to illuminate in both upward and downward direction. An optional lens for magnification expanding across the length and width of the device is housed between the upward and the downward illumination sources.
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公开(公告)号：US5267416A
公开(公告)日：1993-12-07
申请号：US914256
申请日：1992-07-15
Applicant: Donald D. Davis
Inventor： Donald D. Davis
CPC classification number: E05D13/12 , E05Y2201/608 , E05Y2201/618 , E05Y2201/696 , E05Y2900/148 , Y10T16/64
Abstract: A multiple spring counterbalance includes a torsion spring and a tension spring for exerting a combined lifting force on a window sash. A spiral rod is threadably engaged with a follower nut for converting a torque applied by the torsion spring into a lifting force on the window sash. The spiral rod has a pitch that is varied along one part of its length to produce a substantially constant combined lifting force throughout most of a range of sash travel between a lowered position and an intermediate position. However, the pitch is further varied along another part of the length of the spiral member to produce a larger combined lifting force within a remaining portion of the range of sash travel from the intermediate position to the raised position.
Abstract translation: 多弹簧平衡器包括用于在窗扇上施加组合的提升力的扭转弹簧和拉伸弹簧。 螺旋杆与从动螺母螺纹接合，用于将由扭转弹簧施加的扭矩转换成窗框上的提升力。 螺旋杆具有沿其长度的一部分变化的螺距，以在下降位置和中间位置之间的窗扇行程的大部分范围内产生基本上恒定的组合提升力。 然而，螺距沿螺旋构件的长度的另一部分进一步变化，以在从中间位置到升高位置的窗扇行程范围的剩余部分内产生更大的组合提升力。
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公开(公告)号：US4867184A
公开(公告)日：1989-09-19
申请号：US90232
申请日：1987-08-27
Applicant: Donald D. Davis
Inventor： Donald D. Davis
IPC: A45D24/36
CPC classification number: A45D24/36
Abstract: Method and apparatus for cutting hair of a person with a toothed curve about nine inches long which becomes a template at fixed locations during hair cutting determining the length and shape of the cut and using an electric clipper to make all of the cuts using the curve back as a guide, the curve having a simple curvature arced relative to a centrally located axis parallel to and spaced from the axes of the teeth of the curve. Cutting on the concave or the convex face of the curve. Supplying a plurality of curves arced on different radiuses, the curves with lesser radiuses removing more weight of hair than curves with larger radiuses. Providing a variable speed control for the clipper and providing blades with more or less teeth per inch to provide in operations like feathering a blade with less teeth per inch driven at a lower speed. Adjacent tooth surfaces on the curve being roughened to grip hair. The backing portion of the curve having a first pair of guiding surfaces on opposite sides to space the clipper blade from the teeth and having a second pair of guiding surfaces perpendicular to the first surfaces, at the opposite side of the backing portion from the teeth, to guide the clipper blade from end to end of the curve. A handle for the curve on the opposite side of the backing portion from the teeth attachable at either end of the curve or in the middle.
Abstract translation: 用于切割具有大约九英寸长的齿形曲线的人的头发的方法和装置，其在头发切割期间在固定位置成为模板，确定切割的长度和形状，并使用电动剪刀使用曲线返回所有切口 作为指导，曲线具有相对于平行于曲线的齿的轴线并与之间隔开的居中定位的轴线的弧度。 切割曲线的凹面或凸面。 在不同的半径上提供多条曲线，具有较小半径的曲线比具有较大半径的曲线消除更多重量的头发。 为剪刀提供可变速度控制，并为每个英寸提供更多或更少的齿的刀片提供操作，以便以更低速度驱动的每英寸齿数较少的刀片进行操作。 曲线上相邻的牙齿表面被粗糙化以抓住头发。 曲线的背衬部分具有在相对侧上的第一对引导表面，以将裁剪刀片与齿隔开，并且具有垂直于第一表面的第二对引导表面，在背衬部分与齿相反的一侧， 以引导剪刀从曲线的端部到末端。 用于在与曲线的任一端或中间附接的齿的背面部分的相对侧上的曲线的手柄。
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