公开(公告)号：US3946559A

公开(公告)日：1976-03-30

申请号：US513115

申请日：1974-10-08

Applicant: William David Stevenson

Inventor： William David Stevenson

IPC: B63B35/00 ,  E21B19/09 ,  F15B1/02

CPC classification number: E21B19/09 ,  Y10S254/90

Abstract: A heave-compensating device particularly for floating oil drilling rigs incorporates a passive load-supporting system capable of being set to exert a chosen datum load-supporting force and an active force-modifying system operative when the force exerted by the passive load supporting system deviates from the chosen datum force to reduce the deviation. The passive load-supporting system may include a cylinder and piston assembly connected between a fixed support to which said system is connected and the load. The end of the cylinder adjacent the load is connected to a supply of liquid and to one end of a dashpot cylinder containing a piston, the other end of the dashpot cylinder being connected to a supply of compressed gas. The force-modifying system may incorporate a pressure sensor device in operative connection with both ends of the dashpot cylinder and controllingly connected to a pump alternatively connectible by valve means to opposite ends of a servo cylinder containing a piston connection to the piston of the dashpot cylinder.

Abstract translation: 特别用于浮式钻井钻机的升沉补偿装置包括能被设定为施加所选择的基准负载力的被动负载支撑系统和当被动负载支撑系统施加的力偏移时有效的力修改系统 从所选择的基准力减少偏差。 被动负载支撑系统可以包括连接在所述系统连接的固定支撑件和负载之间的气缸和活塞组件。 与负载相邻的气缸的端部连接到液体供应源和容纳活塞的缓冲器气缸的一端，缓冲器气缸的另一端连接到压缩气体供应。 力修改系统可以包括与缓冲器缸的两端可操作连接的压力传感器装置，并且可控制地连接到可由阀装置连接的泵到包含与缓冲器缸的活塞的活塞连接的伺服缸的相对端 。

公开(公告)号：US09745735B2

公开(公告)日：2017-08-29

申请号：US14317816

申请日：2014-06-27

Applicant: David Stevenson ,  Christopher Stevenson

Inventor： David Stevenson ,  Christopher Stevenson

IPC: A47L5/22 ,  E03F1/00 ,  F04D7/04 ,  E03F7/10 ,  E03F7/08 ,  E03F7/00

CPC classification number: E03F7/106 ,  A47L5/22 ,  E03F7/00 ,  E03F7/08 ,  F04D7/04 ,  F04D7/045

Abstract: An intake nozzle fits onto the suction hose of a vacuum pumper truck. The nozzle comprises a tubular housing and the rotor within the housing near the intake end. The rotor includes a hollow cylindrical canister and spiral vanes on its exterior. Ambient air enters an air tube, penetrates the side of the housing and supplies ambient air to the interior of the canister. The air exits through outlet ports into the liquid waste as it moves past under vacuum. The injected air reduces the density of the liquid waste, speeding up the pumping process and reducing the incidence of blockages.

公开(公告)号：US20150376890A1

公开(公告)日：2015-12-31

申请号：US14317816

申请日：2014-06-27

Applicant: David Stevenson ,  Christopher Stevenson

Inventor： David Stevenson ,  Christopher Stevenson

IPC: E03F5/22 ,  F16L11/00

CPC classification number: E03F7/106 ,  A47L5/22 ,  E03F7/00 ,  E03F7/08 ,  F04D7/04 ,  F04D7/045

Abstract: An intake nozzle fits onto the suction hose of a vacuum pumper truck. The nozzle comprises a tubular housing and the rotor within the housing near the intake end. The rotor includes a hollow cylindrical canister and spiral vanes on its exterior. Ambient air enters an air tube, penetrates the side of the housing and supplies ambient air to the interior of the canister. The air exits through outlet ports into the liquid waste as it moves past under vacuum. The injected air reduces the density of the liquid waste, speeding up the pumping process and reducing the incidence of blockages.

Abstract translation: 进气喷嘴安装在真空泵车的抽吸软管上。 该喷嘴包括一个管状壳体，该转子位于壳体内靠近进气端的位置。 转子在其外部包括一个中空的圆柱形罐和螺旋叶片。 环境空气进入空气管，穿过外壳的一侧，并向室内提供环境空气。 当空气通过真空时，空气通过出口进入废液。 喷射的空气降低了液体废物的密度，加速了泵送过程并减少了堵塞的发生。

公开(公告)号：US08712428B2

公开(公告)日：2014-04-29

申请号：US10668634

申请日：2003-09-23

Applicant: David Stevenson Spain

Inventor： David Stevenson Spain

IPC: H04W24/00

CPC classification number: H04W64/00 ,  G01S5/0252

Abstract: A method of estimating the location of a wireless terminal without the addition of hardware to either the wireless terminal or to the telecommunication system's base stations is disclosed. The illustrative embodiment of the present invention is based on the observation that the signal strength of a signal from a transmitter is different at some locations, and, therefore, the location of a wireless terminal can be estimated by comparing the signal strength it currently observes against a map or database that correlates locations to signal strengths. Furthermore, the illustrative embodiment deduces the signal strength of the serving base station's control channel signal at the wireless terminal, RD, based on the principal of reciprocity.

Abstract translation: 公开了一种在无需向无线终端或电信系统的基站添加硬件的情况下估计无线终端的位置的方法。 本发明的说明性实施例基于以下观察：来自发射机的信号的信号强度在某些位置不同，因此无线终端的位置可以通过将当前观察到的信号强度与 将位置与信号强度相关联的地图或数据库。 此外，说明性实施例基于互易原则推断无线终端RD处的服务基站的控制信道信号的信号强度。

公开(公告)号：US20130283141A1

公开(公告)日：2013-10-24

申请号：US13452530

申请日：2012-04-20

Applicant: David Stevenson ,  Christian Morin ,  Ryan Cooney

Inventor： David Stevenson ,  Christian Morin ,  Ryan Cooney

IPC: G06F17/00 ,  G06F15/16

CPC classification number: G06Q10/10 ,  G06F16/29 ,  G06F17/227

Abstract: A method for building client agnostic, discoverable service oriented workflow forms for collecting spatial data input composed of spatial features and metadata is described that permits a workflow engine to export a user-defined spatial workflow represented as a service and described as XML. This workflow is composed of numerous spatial and non-spatial workflow activities chained together and includes forms for collecting user input. These forms are described using XML and can be rendered on clients irrespective of their user interface technology.

Abstract translation: 描述了用于构建用于收集由空间特征和元数据组成的空间数据输入的客户端不可知，可发现的面向服务的工作流形式的方法，其允许工作流引擎输出表示为服务并被描述为XML的用户定义的空间工作流。 该工作流程由链接在一起的多个空间和非空间工作流活动组成，并包括用于收集用户输入的表单。 这些形式使用XML描述，并且可以在客户端上呈现，而不管其用户界面技术如何。

公开(公告)号：US20130072230A1

公开(公告)日：2013-03-21

申请号：US13236048

申请日：2011-09-19

Applicant: Ankit Bansal ,  Tarun Kumar Bhattacharya ,  Martin Feuerstein ,  Scot Douglas Gordon ,  Robert Lewis Martin ,  David Stevenson Spain, JR.

Inventor： Ankit Bansal ,  Tarun Kumar Bhattacharya ,  Martin Feuerstein ,  Scot Douglas Gordon ,  Robert Lewis Martin ,  David Stevenson Spain, JR.

IPC: H04W4/02

CPC classification number: H04W4/02 ,  H04W4/029 ,  H04W4/90

Abstract: An apparatus and method are disclosed for tracking a large number of wireless terminals and for estimating the location of the terminals at each instant. Some embodiments of the present invention use a wide variety of factors to determine the order and frequency with which each wireless terminal is located. These factors include, but are not limited to, the history of the location of the wireless terminal, the time of day, and the weather.

Abstract translation: 公开了一种用于跟踪大量无线终端并用于在每一时刻估计终端的位置的装置和方法。 本发明的一些实施例使用各种因素来确定每个无线终端所在的顺序和频率。 这些因素包括但不限于无线终端的位置的历史，时间和天气。

公开(公告)号：US20120282947A1

公开(公告)日：2012-11-08

申请号：US13551893

申请日：2012-07-18

Applicant: Tarun Kumar Bhattacharya ,  Martin Feuerstein ,  Scot Douglas Gordon ,  David Stevenson Spain, JR.

Inventor： Tarun Kumar Bhattacharya ,  Martin Feuerstein ,  Scot Douglas Gordon ,  David Stevenson Spain, JR.

IPC: H04W24/00

CPC classification number: G01S5/0252 ,  G01S5/021 ,  G01S19/06 ,  G01S19/17 ,  G01S19/252 ,  H04W64/00

Abstract: A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are traits of electromagnetic signals that are dependent on topography, the receiver, the location of the transmitter, and other factors. For example, if a particular radio station is known to be received strongly at a first location and weakly at a second location, and a given wireless terminal at an unknown location is receiving the radio station weakly, it is more likely that the wireless terminal is at the second location than at the first location.

公开(公告)号：US20120281977A1

公开(公告)日：2012-11-08

申请号：US13450418

申请日：2012-04-18

Applicant: Mark David Stevenson

Inventor： Mark David Stevenson

IPC: G03B17/56

CPC classification number: G03B11/041 ,  G03B17/566

Abstract: A lens cap holder securely fastens a camera lens cap to the camera's neck strap, a general strap, or other desired article. The camera lens cap holder can be threaded onto the camera neck strap, other general strap, or the like, through openings in the body of the lens cap holder. Alternatively, a lanyard may be attached to the lens cap holder and securely affixed to an article of choice, including the camera body. The body of the lens cap holder includes a recess approximately the size of a lens cap. The lens cap can mount in the recess by means of a friction fit, similar to the lens cap retaining arrangement of the camera lens. The lens cap holder does not require any alteration of the lens cap or camera. Being of single piece construction, the lens cap holder is relatively low cost as compared to current solutions.

Abstract translation: 镜头盖座将相机镜头盖牢固地固定到相机的颈带，普通的表带或其他所需的物品上。 相机镜头盖座可以通过镜头盖座的主体中的开口穿过相机颈带，其他通用皮带或类似物。 或者，挂绳可以附接到透镜盖保持器并且牢固地固定到包括相机主体的选择的物品上。 透镜盖保持器的主体包括大致为透镜盖的尺寸的凹部。 透镜盖可以通过摩擦配合安装在凹槽中，类似于照相机镜头的镜头盖保持装置。 镜头盖座不需要更换镜头盖或相机。 与单件结构相比，镜头盖架与现有的解决方案相比成本相对较低。

公开(公告)号：US20120155592A1

公开(公告)日：2012-06-21

申请号：US13035886

申请日：2011-02-25

Applicant: Tsahi Gozani ,  Michael Joseph King ,  Timothy John Shaw ,  John David Stevenson

Inventor： Tsahi Gozani ,  Michael Joseph King ,  Timothy John Shaw ,  John David Stevenson

IPC: G01T3/00

CPC classification number: G01T3/00 ,  G01T3/06 ,  G01V5/0069 ,  G01V5/0091

Abstract: The present specification discloses a system for detecting nuclear material based on at least one source of probing radiation and the radiation signatures generated from interrogating an object under inspection. In addition, the present specification describes a threshold-activation detector capable of detecting prompt neutrons, via the activation, after the source's blinding radiation has stopped. The threshold-activation detector can be manufactured from liquid fluorocarbons that allow for the detection of beta radiation and gamma rays.

Abstract translation: 本说明书公开了一种用于基于探测辐射的至少一个源和从查询被检查物体产生的辐射特征来检测核材料的系统。 此外，本说明书描述了阈值激活检测器，其能够在源的眩光辐射停止之后经由激活来检测到迅速的中子。 阈值激活检测器可以由允许检测β辐射和γ射线的液体碳氟化合物制造。

公开(公告)号：US20110298930A1

公开(公告)日：2011-12-08

申请号：US13152910

申请日：2011-06-03

Applicant: Manlio Allegra ,  Martin Feuerstein ,  Kevin Alan Lindsey ,  Mahesh B. Patel ,  David Stevenson Spain, JR.

Inventor： Manlio Allegra ,  Martin Feuerstein ,  Kevin Alan Lindsey ,  Mahesh B. Patel ,  David Stevenson Spain, JR.

IPC: H04N7/18

CPC classification number: H04N7/181

Abstract: An integrated wireless location and surveillance system that provides distinct advantages over video and audio surveillance systems of the prior art is disclosed. The integrated system comprises (i) a surveillance system comprising a plurality of cameras, each covering a respective zone, and (ii) a wireless location system that is capable of providing to the surveillance system, at various points in time, an estimate of the location of a wireless terminal that belongs to a person of interest. The surveillance system intelligently selects the video feed from the appropriate camera, based on the estimated location of the wireless terminal, and delivers the selected video feed to a display. As a person of interest moves from one zone to another, the surveillance system is capable of dynamically updating which video feed is delivered to the display.

Abstract translation: 公开了一种与现有技术的视频和音频监视系统相比具有明显优点的综合无线位置和监控系统。 集成系统包括（i）包括多个相机的监视系统，每个相机覆盖相应的区域，以及（ii）无线定位系统，其能够在各个时间点向监视系统提供对 属于感兴趣的人的无线终端的位置。 监控系统根据无线终端的估计位置智能地从适当的摄像机中选择视频馈送，并将所选择的视频馈送传送到显示器。 随着感兴趣的人从一个区域移动到另一个区域，监视系统能够动态地更新哪个视频馈送被传送到显示器。