公开(公告)号：US20060210096A1

公开(公告)日：2006-09-21

申请号：US11084608

申请日：2005-03-19

申请人： Jack Stokes ,  John Platt ,  David Stevens

发明人： Jack Stokes ,  John Platt ,  David Stevens

IPC分类号： H03G3/00 ,  H03G9/00

CPC分类号： H04R3/005 ,  H03G3/301 ,  H03G3/3089 ,  H04R3/02 ,  H04R2410/00 ,  H04R2430/01

摘要： A system level automatic gain control (“System AGC”) automatically initializes and controls analog microphone gain in an environment where multiple independent applications simultaneously receive an input from a single analog microphone or microphone array. In one embodiment, the System AGC also prevents those applications from acting to separately control the gain by intercepting external gain control commands and responding to the corresponding application with a corresponding digital gain applied to the input signal from the microphone. Consequently, the System AGC avoids problems relating to oscillations and instability in the microphone gain resulting from multiple applications trying to simultaneously control the gain while preventing each application from adversely affecting the quality of another application's audio capture signal. Further, in one embodiment, the System AGC also acts to maximize the signal to noise (SNR) ratio of the microphone without introducing clipping as a function of a sampled background environment.

摘要翻译： 系统级自动增益控制（“系统AGC”）在多个独立应用程序同时从单个模拟麦克风或麦克风阵列接收输入的环境中自动初始化和控制模拟麦克风增益。 在一个实施例中，系统AGC还防止这些应用通过截取外部增益控制命令来单独地控制增益，并且以对应于来自麦克风的输入信号的相应数字增益作出响应。 因此，系统AGC避免了与多个应用程序尝试同时控制增益相关的麦克风增益的振荡和不稳定性问题，同时防止每个应用程序不利地影响另一应用程序的音频捕获信号的质量。 此外，在一个实施例中，系统AGC还用于使麦克风的信噪比（SNR）最大化，而不会引入作为采样的背景环境的函数的削波。

公开(公告)号：US20220256791A1

公开(公告)日：2022-08-18

申请号：US17255659

申请日：2020-07-22

申请人： David Stevens

发明人： David Stevens

IPC分类号： A01G31/06

摘要： The present invention relates to a reservoir cover for use with hydroponic, aeroponic, aquaponic or similar systems used to cultivate plant articles without soil medium. The reservoir cover containing and re-directing water, nutrients, and other liquids, intentionally or un-intentionally leaked by the system, back into a reservoir or water source the reservoir cover is positioned upon. Within hydroponic, aeroponic, aquaponic or similar systems the plant article is held within a plant growing unit positioned above the reservoir cover. As water is dispersed from within said systems gravity directs movement of water, nutrients, and other liquids to the reservoir cover of the present invention. As water, nutrients and other liquids are leaked or lost from the plant growing unit the reservoir cover is positioned such that water, nutrients and other liquids are not dispersed to an undesirable location, but rather are re-directed back in the original water source or reservoir.

公开(公告)号：US08191647B2

公开(公告)日：2012-06-05

申请号：US11694128

申请日：2007-03-30

申请人： Robert M. Cordell ,  Manuel R. Silva, Jr. ,  David Stevens

发明人： Robert M. Cordell ,  Manuel R. Silva, Jr. ,  David Stevens

IPC分类号： A62C37/36

CPC分类号： A62C3/004 ,  A62C35/62 ,  A62C35/68 ,  Y10T29/49826 ,  Y10T29/49947

摘要： A dry sprinkler installation and sealing device for a cold environment is disclosed. The dry sprinkler installation includes a supply conduit having a first end adapted to communicate with a fire retardant fluid source and a second end supporting a sprinkler head. The supply conduit is dimensioned to extend through an opening in a wall of a cold environment, e.g., a freezer ceiling. A flexible sealing device is positioned about the supply conduit adjacent an exterior surface of the cold environment. A first end of the sealing device is secured about the supply conduit and a second end of the sealing device is secured to an exterior surface of the cold environment. The flexible sealing device allows for radial and axial adjustments to the supply conduit and sprinkler head without comprising the integrity of the sealing device.

摘要翻译： 公开了一种用于寒冷环境的干式喷洒器安装和密封装置。 干喷洒器安装包括供应管道，其具有适于与阻燃流体源连通的第一端和支撑喷洒头的第二端。 供应管道的尺寸设计成延伸穿过冷环境的壁中的开口，例如冷冻室天花板。 柔性密封装置围绕供应管道邻近冷环境的外表面定位。 密封装置的第一端围绕供应导管固定，并且密封装置的第二端固定到冷环境的外表面。 柔性密封装置允许对供应管道和喷洒头进行径向和轴向调节，而不包括密封装置的完整性。

公开(公告)号：US20060002092A1

公开(公告)日：2006-01-05

申请号：US10884727

申请日：2004-07-02

申请人： David Stevens

发明人： David Stevens

IPC分类号： H05K7/20

CPC分类号： H05K1/0209 ,  H05K3/403 ,  H05K2201/066 ,  H05K2201/0919

摘要： The present invention provides a PWB having a heat sink connected to the internal circuits of the PWB that allows for heat dissipation from those internal circuits. In one aspect, the PWB includes at least two insulating layers that are coupled together and that have a conductive layer located therebetween. A conductive interconnect is located on an edge of or through the PWB and is thermally coupled to the conductive layer and a heat sink. The conductive layer forms a thermal conductive path from the conductive layer to the heat sink and thereby allows for heat to be dissipated from within an internal portion of the PWB.

摘要翻译： 本发明提供了一种PWB，其具有连接到PWB的内部电路的散热器，其允许从那些内部电路散热。 在一个方面，PWB包括耦合在一起并且其间具有导电层的至少两个绝缘层。 导电互连位于PWB的边缘或通过PWB的边缘并且热耦合到导电层和散热器。 导电层形成从导电层到散热片的导热路径，从而允许从PWB的内部部分散热。

公开(公告)号：US08485360B2

公开(公告)日：2013-07-16

申请号：US13041131

申请日：2011-03-04

申请人： Bradley Donald Teys ,  David Stevens

发明人： Bradley Donald Teys ,  David Stevens

IPC分类号： B65D73/00 ,  B65D17/32

CPC分类号： B65D75/366 ,  B65D2575/366

摘要： A container fracturable along a break path having a generally constant wall thickness about the break path is disclosed. In order to provide a specific break path without reducing the structural integrity of the container, the body of the container is configured to concentrate stress along the break path.

摘要翻译： 公开了一种沿断裂路径可破裂的容器，其具有围绕断裂路径的大致恒定的壁厚。 为了在不降低容器的结构完整性的情况下提供特定的断开路径，容器的主体构造成沿应力路径集中应力。

公开(公告)号：US20070025900A1

公开(公告)日：2007-02-01

申请号：US11157196

申请日：2005-06-20

申请人： Peter Clark ,  David Stevens

发明人： Peter Clark ,  David Stevens

IPC分类号： B01D53/14 ,  C01B17/48 ,  C01B17/00 ,  C01B17/02

CPC分类号： C01B17/0413 ,  C01B17/0404 ,  C01B17/0421 ,  C01B17/508

摘要： A process relating to the production of energy from a stream comprising hydrogen sulfide to produce greatly increased quantities of energy.

摘要翻译： 涉及从包含硫化氢的物流产生能量以产生大量增加的能量的方法。

公开(公告)号：US20060272291A1

公开(公告)日：2006-12-07

申请号：US10540102

申请日：2003-12-22

申请人： John Koke ,  Jacob Brinkman ,  Ron Whitehead ,  David Stevens

发明人： John Koke ,  Jacob Brinkman ,  Ron Whitehead ,  David Stevens

IPC分类号： B65B31/02

CPC分类号： B65B31/021 ,  B65B31/024

摘要： A vacuum packaging machine 141 and a conveyor 17 to deliver a product package from an upstream station 140 to a position adjacent a vacuum chamber 3a. The conveyor 17 has a longitudinal direction defined by the direction of travel of the product package. The vacuum chamber has a heat sealing and cutting assembly 143 oriented transversely to the longitudinal direction of the conveyor and in a position with sufficient spacing between end walls of the vacuum chamber and the assembly 143 for the product package containing two or more products to be loaded into the vacuum chamber 3a with at least one product located in front of the heat sealing and cutting assembly and at least one other product located behind the heat sealing and cutting assembly. The heat sealing and cutting assembly 143 seals and cuts between two products to form two separate evacuated packages.

摘要翻译： 真空包装机141和输送机17，用于将产品包装从上游站140输送到邻近真空室3a的位置。 输送机17具有由产品包装的行进方向限定的纵向方向。 真空室具有横向于输送机的纵向的热封和切割组件143，并且在真空室的端壁和用于产品包装的组件143之间具有足够的间隔的位置中包含两个或多个待加载的产品的位置 进入真空室3a，其中至少一个产品位于热封和切割组件的前面，以及位于热封和切割组件后面的至少一个其它产品。 热封和切割组件143在两个产品之间密封和切割以形成两个分离的抽空包装。

公开(公告)号：US20060254124A1

公开(公告)日：2006-11-16

申请号：US11129519

申请日：2005-05-13

申请人： Salvatore DeYoreo ,  Karl Winkler ,  David Stevens

发明人： Salvatore DeYoreo ,  Karl Winkler ,  David Stevens

IPC分类号： A01M1/06 ,  A01M1/02

CPC分类号： A01M1/06 ,  A01M1/023 ,  A01M2200/012

摘要： In an insect lure and trap, a system for generating a carbon dioxide attractant has a combustion chamber in which carbon dioxide is generated by means of an exothermic reaction from a gaseous fuel rich in carbon. A container contains a pressurized supply of said fuel and a supply line connects said container to said combustion chamber. A normally closed valve is included in said supply line. The system includes means for sensing the temperature in said combustion chamber and for generating a control signal representative of said temperature. A controller responsive to said control signal compares said temperature to a reference temperature and opens said valve during selected segments of successive equal time intervals.

摘要翻译： 在昆虫诱饵和捕获器中，用于产生二氧化碳引诱剂的系统具有燃烧室，其中通过来自富含碳的气态燃料的放热反应产生二氧化碳。 容器包含所述燃料的加压供应，并且供应管线将所述容器连接到所述燃烧室。 所述供给管线中包括常闭阀。 该系统包括用于感测所述燃烧室中的温度并产生代表所述温度的控制信号的装置。 响应于所述控制信号的控制器将所述温度与参考温度进行比较，并在连续相等的时间间隔的选定段期间打开所述阀。

公开(公告)号：US20060250058A1

公开(公告)日：2006-11-09

申请号：US11382400

申请日：2006-05-09

申请人： David Stevens ,  Robby Mack ,  Mark Feddema ,  Lorraine Westlake ,  Mark Davis

发明人： David Stevens ,  Robby Mack ,  Mark Feddema ,  Lorraine Westlake ,  Mark Davis

IPC分类号： A47B88/00

CPC分类号： A47L15/502 ,  A47L15/505 ,  A47L15/507

摘要： A dishwasher comprises a cabinet defining a wash chamber and a utensil rack mounted within the wash chamber by at least one slide. The slide comprises a track that slidably receives a wheel and includes an access opening for insertion or removal of the wheel from the track. A closure for selectively closing the access opening can prevent undesired removal of the wheel from the track. A method of removing the utensil rack comprises sliding the utensil rack to align the wheel with the access opening and lifting the utensil rack to move the wheel through the access opening.

摘要翻译： 洗碗机包括限定洗涤室的橱柜和通过至少一个滑动件安装在洗涤室内的餐具架。 滑动件包括滑动地容纳轮的轨道，并且包括用于从轨道插入或移除车轮的进入开口。 用于选择性地关闭进入开口的闭合件可以防止轮子从轨道中不期望地移除。 移除餐具架的方法包括滑动餐具架以使轮与入口开口对准并提起餐具架以使车轮移动通过入口。

公开(公告)号：US11304377B2

公开(公告)日：2022-04-19

申请号：US16628946

申请日：2019-12-12

申请人： David Stevens

发明人： David Stevens

IPC分类号： A01G9/02

摘要： The present invention includes a plant holding unit for supporting a plant on a generally vertical member. A plant container held by plant holding unit is held below a plane approximately normal to the outer surface of the generally vertical member. The plant holding unit is configured to support a plant container on a generally vertical member. The plant holding unit includes an opening having an axis and a perimeter edge, wherein the axis is approximately perpendicular to the first plane defining a general direction of plant growth. The plant holding unit also includes a barrier extending generally vertically from and attached to the perimeter edge, wherein the barrier forms a water retaining area.