公开(公告)号：US5407702A

公开(公告)日：1995-04-18

申请号：US057743

申请日：1993-05-05

Applicant: David A. Smith ,  Susan A. Stanton ,  Gary J. DiFranco ,  Roy B. Steidley ,  John M. Stinson ,  Thomas L. Levendusky ,  Vincent J. Downard ,  William F. Forster ,  John R. McAllister

Inventor： David A. Smith ,  Susan A. Stanton ,  Gary J. DiFranco ,  Roy B. Steidley ,  John M. Stinson ,  Thomas L. Levendusky ,  Vincent J. Downard ,  William F. Forster ,  John R. McAllister

IPC: B05D1/00 ,  B05D1/26 ,  B05D1/28 ,  B05D3/02 ,  B05D7/14 ,  B29C35/16 ,  B29C71/00 ,  B29D7/01 ,  B32B37/15

CPC classification number: B32B37/153 ,  B05D1/265 ,  B05D1/28 ,  B05D3/02 ,  B05D7/14 ,  B05D2252/04 ,  B05D2252/10 ,  B29C2035/1616 ,  B29C71/0063 ,  B29K2067/00 ,  B29K2705/02

Abstract: A method for extrusion coating both sides of a metal strip. A metal strip, such as aluminum alloy strip, is moved through a pre-conditioner, two extrusion dies, a post heater and a cooling system. Both sides of the strip are coated with thin coatings of polyester material. The coated metal strip is useful for containers, such as cans and can ends, as well as for automobiles, appliances, aerospace, construction and electrical devices.

Abstract translation: 一种用于挤出涂覆金属带的两侧的方法。 诸如铝合金带的金属条移动通过预调节器，两个挤出模具，后加热器和冷却系统。 带材的两面均涂有聚酯材料的薄涂层。 涂覆的金属条可用于容器，例如罐和罐端，以及汽车，电器，航空航天，建筑和电气设备。

公开(公告)号：US5341489A

公开(公告)日：1994-08-23

申请号：US868163

申请日：1992-04-14

Applicant: James F. Heiberger ,  David A. Smith

Inventor： James F. Heiberger ,  David A. Smith

IPC: G06F12/06 ,  G06F12/02

CPC classification number: G06F12/0607 ,  G06F12/0246 ,  G06F2212/2022

Abstract: A memory card that is detachably connectable to a host data processing system includes a plurality of flash EPROM memory devices for storing data input from the host system in addressable data locations in the memory devices. The card also includes a control circuit having further memory for storing an interleave factor input from the host system for specifying the order in which data is consecutively distributed among the memory devices. By selectively steering certain low order address bits to a chip select decoder, data is serially distributed into identical address locations in each memory device. By having the interleave factor variable, data may be distributed among a selected set of memory devices, thereby allowing the host system to relate the data transfer rate to the particular application.

Abstract translation: 可拆卸地连接到主机数据处理系统的存储卡包括多个闪存EPROM存储器件，用于存储从主机系统输入到存储器件中的可寻址数据位置的数据。 该卡还包括具有进一步存储器的控制电路，用于存储从主机系统输入的交织因子，用于指定数据在存储器件之间连续分布的顺序。 通过选择性地将某些低阶地址位转向芯片选择解码器，数据被串行分配到每个存储器件中相同的地址位置。 通过具有交错因子变量，数据可以分布在所选择的一组存储器件中，从而允许主机系统将数据传输速率与特定应用相关联。

公开(公告)号：US5309344A

公开(公告)日：1994-05-03

申请号：US943008

申请日：1992-09-09

Applicant: David A. Smith

Inventor： David A. Smith

IPC: H02M1/44 ,  H02M3/335

CPC classification number: H02M1/44 ,  H02M3/33576

Abstract: A dual active clamp (DAC) converter comprising two active-clamp, zero-voltage switching (ZVS) converters for converting electrical power from an input source to an output load is described. The two active-clamp ZVS converters are coupled in parallel to one another at their respective inputs and outputs, and are operated in a manner which reduces the overall input and output ripple currents of the DAC converter, which reduces the EMI emissions of the DAC converter. Each of the active-clamp ZVS converters achieves zero-voltage switching on its primary switch means, which also improves EMI emissions. Each active-clamp ZVS converter includes a transformer having a primary winding and a secondary winding, the secondary winding being coupled to the output load and the primary switch means being coupled between the primary winding and a voltage source, and an active clamp circuit comprising a series combination of a storage capacitor and a first switch means. The active clamp is coupled to the transformer to capture energy released from the transformer at specific times, which is then used to reset the transformer's core and to create a zero voltage switching condition across the primary switch means. A second switch means is connected in series with the secondary winding of the transformer and is operated to prevent the loading effects of the secondary from interrupting the creation of the zero-voltage switching condition.

Abstract translation: 描述了包括用于将来自输入源的电力转换为输出负载的两个有源钳位零电压开关（ZVS）转换器的双有源钳位（DAC）转换器。 两个有源钳位ZVS转换器在其各自的输入和输出端彼此并联耦合，并且以减少DAC转换器的总体输入和输出纹波电流的方式操作，这降低了DAC转换器的EMI发射 。 每个有源钳位ZVS转换器在其主开关装置上实现零电压开关，这也改善了EMI辐射。 每个有源钳位ZVS转换器包括具有初级绕组和次级绕组的变压器，次级绕组耦合到输出负载，并且初级开关装置耦合在初级绕组和电压源之间，有源钳位电路包括一个 存储电容器和第一开关装置的串联组合。 有源钳位器耦合到变压器以捕获在特定时间从变压器释放的能量，然后用于复位变压器的铁芯并且在主开关装置上产生零电压开关条件。 第二开关装置与变压器的次级绕组串联连接，并且被操作以防止二次管的负载效应中断零电压开关条件的产生。

公开(公告)号：US5304875A

公开(公告)日：1994-04-19

申请号：US875753

申请日：1992-04-28

Applicant: David A. Smith

Inventor： David A. Smith

IPC: H02M3/335 ,  H03K17/082 ,  H03K17/687 ,  H03K3/01

CPC classification number: H03K17/0822 ,  H02M3/33569 ,  H03K17/6871

Abstract: A efficient circuit for driving two switching transistors of an electrical power transfer circuit in an anti-phase relationship is described. The drive circuit is applied to a power transfer circuit, such as a switching-type power converter, having a first switching transistor, a second switching transistor, and a magnetic storage element electrically coupled to the first switching transistor. The first switching transistor is coupled to the magnetic storage element and operates to vary the magnetic flux in the storage element. The present invention comprises a drive circuitry for operating the first switching transistor, the drive circuitry being responsive to a first control signal generated by the power transfer circuit. For driving the second switching transistor, the present invention comprises circuitry for generating a second control signal as a function of the magnetic flux in the magnetic storage element. The second control signal causes the second switching transistor to be conductive when the first switching transistor becomes non-conductive. The present invention further comprises a shunting circuitry responsive to the first control signal for causing the second switching transistor to be non-conductive when the first switching transistor becomes conductive. The circuitry for generating the second control signal and the shunting circuitry of the present invention may be constructed from components requiring less board area than standard drive circuitry for the second switching transistor.

Abstract translation: 描述了以反相位关系驱动电力传输电路的两个开关晶体管的有效电路。 驱动电路被施加到诸如开关型功率转换器的功率传输电路，其具有电耦合到第一开关晶体管的第一开关晶体管，第二开关晶体管和磁存储元件。 第一开关晶体管耦合到磁存储元件并且操作以改变存储元件中的磁通量。 本发明包括用于操作第一开关晶体管的驱动电路，驱动电路响应于由功率传输电路产生的第一控制信号。 为了驱动第二开关晶体管，本发明包括用于产生作为磁存储元件中的磁通量的函数的第二控制信号的电路。 当第一开关晶体管变得不导通时，第二控制信号使第二开关晶体管导通。 本发明还包括响应于第一控制信号的分流电路，用于当第一开关晶体管导通时使第二开关晶体管不导通。 用于产生本发明的第二控制信号和分流电路的电路可以由与用于第二开关晶体管的标准驱动电路相比较少的电路板面积的部件构成。

公开(公告)号：USD340907S

公开(公告)日：1993-11-02

申请号：US716379

申请日：1991-06-14

Applicant: David A. Smith ,  Neal G. Stewart ,  Kenneth A. Check

Designer： David A. Smith ,  Neal G. Stewart ,  Kenneth A. Check

公开(公告)号：US5203556A

公开(公告)日：1993-04-20

申请号：US956571

申请日：1992-10-05

Applicant: David A. Smith ,  Robert J. Nestle

Inventor： David A. Smith ,  Robert J. Nestle

IPC: B31B23/00 ,  B65H5/12 ,  B65H31/24

CPC classification number: B31B23/00 ,  B65H31/24 ,  B65H5/12 ,  B31B2219/028 ,  B31B2237/10 ,  B65H2701/191

Abstract: A method and apparatus for the sequential handling and delivery of individual flexible products, such as plastic bags or containers, is provided which enables the use of extended length orbital packer fingers for removing closely spaced flexible products from a transfer drum and delivering them to a stacking table. The apparatus includes a product drum for delivering a series of closely spaced individual flexible products to a transfer point, and a transfer drum positioned at the transfer point for transferring the flexible products to a delivery point while maintaining substantially the same spacing between the products. Adjacent the transfer drum is an orbital packing mechanism including a shaft mounted adjacent the transfer drum for orbital movement and a plurality of packer fingers secured to the shaft and extending into the annular grooves for removing the flexible products sequentially from the transfer drum and delivering them to the delivery point. The fingers are preferably designed to extend and contact across substantially the full width of the flexible products as the products are removed from the transfer drum to prevent bag fold over problems and misalignment in the stacking of the products.

Abstract translation: 提供了用于顺序处理和递送各种柔性产品（例如塑料袋或容器）的方法和装置，其使得能够使用延长长度的轨道封隔器手指，用于从转鼓转移紧密间隔的柔性产品并将其递送到堆叠 表。 该设备包括用于将一系列紧密间隔的单独柔性产品递送到转移点的产品鼓和定位在转移点处的转印鼓，以将柔性产品转移到输送点，同时保持产品之间基本上相同的间隔。 与转印鼓相邻的轨道包装机构包括一个安装在靠近用于轨道运动的转印鼓的转轴上的轴和多个封闭器指状物，固定到轴上并延伸到环形槽中，用于顺序地从转印鼓上取出柔性产品并将其输送到 交货点。 手指优选地设计成当产品从转印鼓上移除时基本上延伸和接触柔性产品的整个宽度，以防止袋折叠产品的堆叠中的问题和不对准。

公开(公告)号：US5175525A

公开(公告)日：1992-12-29

申请号：US705337

申请日：1991-06-11

Applicant: David A. Smith

Inventor： David A. Smith

IPC: H01F27/28

CPC classification number: H01F27/2866

Abstract: The present invention provides a power transformer having a low profile and low overall volume. The power transformer also has improved isolation between the primary and the secondary windings, while at the same time providing improved electromagnetic coupling between these windings. The power transformer comprises an insulating enclosure for encapsulating a primary winding wound therein. The secondary winding comprises two electrically connected planar windings stamped from a conductive foil sheet. The insulating enclosure is positioned between the two planar windings of the secondary winding. The power transformer also comprises a core for coupling magnetic flux from the primary winding to the secondary winding.

Abstract translation: 本发明提供一种具有低轮廓和低体积的电力变压器。 电源变压器还具有改善初级和次级绕组之间的隔离，同时提供这些绕组之间改进的电磁耦合。 电力变压器包括用于封装缠绕在其中的初级绕组的绝缘外壳。 次级绕组包括从导电箔片冲压的两个电连接的平面绕组。 绝缘外壳位于次级绕组的两个平面绕组之间。 电力变压器还包括用于将来自初级绕组的磁通量耦合到次级绕组的磁芯。

公开(公告)号：US5108085A

公开(公告)日：1992-04-28

申请号：US565339

申请日：1990-08-09

Applicant: David A. Smith ,  Herbert B. Geiger

Inventor： David A. Smith ,  Herbert B. Geiger

IPC: B29C65/00 ,  B31B19/98 ,  B31B23/00

CPC classification number: B31B23/00 ,  B31B19/98 ,  B29C66/84121 ,  B31B2219/028 ,  B31B2219/928 ,  B31B2237/10

Abstract: An apparatus and method for making individual flexible web products whereby a web material is tucked outwardly from the surface of a product drum by fixed projections, severed and sealed, and provided to one or more transfer points. The products are there transferred to one or more transfer drums with corresponding indentations, which deliver the products to packing devices. An alternative embodiment provides multiple delivery points by using lateral-shifting transfer drums. The apparatus and method vary and control flexible product width introducing a multiplicity of moving parts, and enhance separation of individual products during transfer while increasing overall production rates.

Abstract translation: 一种用于制造单个柔性幅材产品的装置和方法，由此通过固定的突出物将卷材材料从产品鼓的表面向外折叠，切割并密封并提供给一个或多个转移点。 产品转移到一个或多个具有相应压痕的转鼓，将产品交付给包装设备。 替代实施例通过使用横向移位转移鼓提供多个递送点。 该设备和方法变化并且控制灵活的产品宽度引入多个移动部件，并且在增加整体生产率的同时增强转移期间各个产品的分离。

公开(公告)号：US5100347A

公开(公告)日：1992-03-31

申请号：US346876

申请日：1989-05-03

Applicant: Joseph J. Malasky, III ,  David A. Smith

Inventor： Joseph J. Malasky, III ,  David A. Smith

IPC: H01R13/52 ,  H01R13/58 ,  H01R43/24

CPC classification number: H01R13/5205 ,  H01R13/5845 ,  H01R43/24 ,  Y10S439/936

Abstract: This invention relates to a method and apparatus for providing a cable assembly seal and strain relief and, in particular, where the apparatus comprises a pre-mold for use with an overmold to provide the seal and strain relief for electrical conductors terminated within an electrical housing.

Abstract translation: 本发明涉及一种用于提供电缆组件密封和应变消除的方法和装置，特别是在该装置包括用于与包覆模制一起使用的预模具的情况下，为终端于电气外壳内的电导体提供密封和应变释放 。

公开(公告)号：US5065147A

公开(公告)日：1991-11-12

申请号：US353369

申请日：1989-05-17

Applicant: Thomas A. Rice ,  David A. Smith ,  Alan W. Schmidt

Inventor： Thomas A. Rice ,  David A. Smith ,  Alan W. Schmidt

IPC: G01R23/16 ,  G01R13/02

CPC classification number: G01R13/0227

Abstract: A method for simulating an analog display in a digital display spectrum analyzer (or other digital display test instrument) comprises the steps of defining a plurality, N, of traces of the signal to be displayed, assigning coordinate values to points along each trace, and plotting and simultaneously displaying each of the N traces by illuminating corresponding pixel locations on the CRT as indicated by the assigned coordinate values. The method permits effective simulation of trace persistence as commonly found in analog display test instruments. According to one embodiment of the invention, a color graphics controller/color CRT may be provided, in which case gray scales may be generated and displayed to simulate variations in intensity levels as commonly found in traces plotted on analog display test instruments. An apparatus for practicing the method is also disclosed.