公开(公告)号：US4992192A

公开(公告)日：1991-02-12

申请号：US341451

申请日：1989-04-21

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： C08J3/02 ,  C08F2/04 ,  C08F2/06 ,  C08F2/08 ,  C08F2/44 ,  C08F20/06 ,  C08F20/10 ,  C08F20/12 ,  C08F220/04 ,  C08F257/02 ,  C08F265/04 ,  C08F265/06 ,  C08F291/00 ,  C10M159/12 ,  C10M171/00 ,  C10N20/06 ,  C10N40/14

CPC分类号： C08F257/02 ,  C08F265/04 ,  C08F265/06 ,  C08F291/00 ,  C10M171/001

摘要： Disclosed are electrorheological (ER) fluids which display improved stability against sedimentation, reduced current density and good ER responses. Thes=e ER fluids are prepared from monomers which are polymerized by dispersion polymerization in a low conductivity medium which also serves as the dispersion medium for the fluid. The ER fluids are further processed by modifying the polymer particles through polymerization of a hydrophilic monomer to form a hydrophilic shell or globule around the particles followed by neutralization through addition of an organic soluble base. The resulting dispersion is then doped with water to obtain a stable ER fluid. The hydrophilic shell or globule constitutes about 15% of the particle. Water dopant is only absorbed by the hydrophilic portion of the particle and does not enter into the core of the particle. The quantity of water is significantly reduced, which in turn results in a significant reduction of the current density at any given comparative voltage.

摘要翻译： 公开了电流变（ER）流体，其显示出改善的沉降稳定性，降低的电流密度和良好的ER响应。 该ε= e ER流体由也用作流体分散介质的低电导率介质中的分散聚合聚合的单体制备。 通过亲水性单体的聚合改性聚合物颗粒来进一步处理ER流体，以在颗粒周围形成亲水性壳或球，然后通过加入有机可溶碱进行中和。 然后将所得分散体用水掺杂以获得稳定的ER流体。 亲水壳或球形构成颗粒的约15％。 水掺杂剂仅被颗粒的亲水部分吸收并且不会进入颗粒的核心。 水的量显着减少，这又导致在任何给定的比较电压下电流密度的显着降低。

公开(公告)号：US5556599A

公开(公告)日：1996-09-17

申请号：US907751

申请日：1992-06-29

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： A61B5/15 ,  B01L3/14 ,  B01L3/00

CPC分类号： B01L3/5082 ,  A61B5/150022 ,  A61B5/150236 ,  A61B5/150244 ,  A61B5/150351 ,  A61B5/150389 ,  A61B5/150473 ,  A61B5/150786 ,  A61B5/154 ,  A61B5/150259

摘要： A blood sample/fluid system includes a pair of tubes formed of identically shaped concentric cylinders, each closed at one end and open at the other end and having different diameters enabling the reduced diameter tube to be positioned in the enlarged diameter tube. A locking ring is positioned around the outer surface of the reduced diameter tube to provide a spacer and seal for the enlarged diameter tube. An identifying label is positioned on the outer surface of the enlarged diameter tube for providing identity for both tubes when the tubes are engaged and for the enlarged diameter tube when the reduced diameter tube is removed from the enlarged diameter tube.

摘要翻译： 血液样本/流体系统包括由相同形状的同心圆筒形成的一对管，每个管一端在另一端封闭并且在另一端开口并且具有不同的直径，使得直径减小的管能够定位在扩径管中。 锁定环围绕减径管的外表面定位，以为扩径管提供间隔件和密封。 识别标签定位在放大直径管的外表面上，用于当管接合时为两个管提供标识，并且当直径较小的管从扩径管移除时，用于扩径管。

公开(公告)号：US4774452A

公开(公告)日：1988-09-27

申请号：US55545

申请日：1987-05-29

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： G05F3/18 ,  G05F3/20

CPC分类号： G05F3/18

摘要： A zener diode is connected at one end via a first impedance to a first power terminal. The base-to-emitter junctions of first and second transistors are connected in parallel between the other end of the zener diode and a second power terminal. The collector of the first transistor is connected to the one end of the zener diode to regulate the zener current and hence the zener voltage. A third transistor is coupled at its base to the one end of the zener and its emitter is connected to an output terminal to produce an output voltage which is a function of the zener voltage. The collector of the second transistor is connected to the emitter of the third transistor to pass a current through the third transistor which is approximately equal to the current through the first and second transistors whereby the base-to emitter junction of the third transistor and its temperature variations have little, if any, effect on the output voltage.

摘要翻译： 齐纳二极管通过第一阻抗在一端连接到第一电源端子。 第一和第二晶体管的基极到发射极结并联在齐纳二极管的另一端和第二电源端子之间。 第一晶体管的集电极连接到齐纳二极管的一端，以调节齐纳电流，从而调节齐纳电压。 第三晶体管在其基极耦合到齐纳一端，并且其发射极连接到输出端子以产生作为齐纳电压的函数的输出电压。 第二晶体管的集电极连接到第三晶体管的发射极，以使电流通过第三晶体管，其大约等于通过第一和第二晶体管的电流，由此第三晶体管的基极到发射极结及其温度 变化对输出电压的影响很小（如果有的话）。

公开(公告)号：US20140026401A1

公开(公告)日：2014-01-30

申请号：US13556341

申请日：2012-07-24

申请人： Vince P. Solferino ,  Paul W. Zeng ,  Patrick C. Brostrom ,  Michael R. Kaput ,  Scott Lehto ,  Syed M. Ahmed

发明人： Vince P. Solferino ,  Paul W. Zeng ,  Patrick C. Brostrom ,  Michael R. Kaput ,  Scott Lehto ,  Syed M. Ahmed

IPC分类号： B23P19/00

CPC分类号： B23P19/00 ,  F02M55/025 ,  F02M2200/09 ,  F02M2200/306 ,  F02M2200/857 ,  F16B9/023 ,  F16B43/00 ,  F16F1/32 ,  F16F15/073

摘要： An internal combustion engine direct injection fuel injector system includes a fuel rail which is welded to a fuel rail bracket. A fuel rail mounting sleeve has a flange and is bolted to the engine cylinder head. The bracket fits around the flange and is held in place by a steel washer and a pair of stepped isolator washers which are positioned in pockets formed on either side of the bracket. The isolator washers serve as springs which form a shock absorber between the bracket and cylinder head. Compression forces on the bracket and isolator washers are controlled by bolt tension.

摘要翻译： 内燃机直喷式燃料喷射器系统包括焊接到燃料导轨支架上的燃料轨道。 燃料导轨安装套筒具有凸缘并且被螺栓连接到发动机气缸盖。 支架围绕法兰安装，并通过钢垫圈和一对台阶式隔离垫圈保持在适当的位置，该垫圈位于支架两侧形成的口袋中。 隔离器垫圈用作在支架和气缸盖之间形成减震器的弹簧。 支架和隔离垫圈的压缩力由螺栓张力控制。

公开(公告)号：US5143970A

公开(公告)日：1992-09-01

申请号：US709659

申请日：1991-06-03

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： C08F251/02 ,  C09D151/02

CPC分类号： C09D151/02 ,  C08F251/02

摘要： Water wet nitrocellulose, butyl acrylate/methyl methacrylate monomers and phosphate surfactant are emulsified into an oil-in-water emulsion and polymerized to produce a nitrocellulose/acrylic latex emulsion with a particle size below 0.25 microns. Wood finishing lacquers produced from this latex emulsion are equivalent in performance to solvent lacquers while lowering VOC to below 2.3 lb/gal.

摘要翻译： 将水湿硝酸纤维素，丙烯酸丁酯/甲基丙烯酸甲酯单体和磷酸盐表面活性剂乳化成水包油乳液，并聚合以产生粒径低于0.25微米的硝酸纤维素/丙烯酸胶乳乳液。 由该胶乳乳液生产的木材整理漆在性能上与溶剂漆相当，同时将VOC降至2.3lb / gal以下。

公开(公告)号：US4644198A

公开(公告)日：1987-02-17

申请号：US666860

申请日：1984-10-31

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： H03K5/003 ,  H04N5/16 ,  H03K5/08

CPC分类号： H04N5/16 ,  H03K5/003

摘要： A semiconductor junction clamps a signal to a reference potential. A comparator senses the difference between the reference potential and the signal potential and causes a controllable bias current supply to selectively apply a forward bias to the junction when the signal is of a polarity sense tending to forward bias the junction.

摘要翻译： 半导体结将信号钳位到参考电位。 比较器感测参考电位和信号电位之间的差异，并且当信号具有倾向于正向偏置接点的极性有意义时，引起可控偏置电流源向接点选择性地施加正向偏压。

公开(公告)号：US20140027543A1

公开(公告)日：2014-01-30

申请号：US13556355

申请日：2012-07-24

申请人： Vince P. Solferino ,  Paul W. Zeng ,  Patrick C. Brostrom ,  Michael R. Kaput ,  Scott Lehto ,  Syed M. Ahmed

发明人： Vince P. Solferino ,  Paul W. Zeng ,  Patrick C. Brostrom ,  Michael R. Kaput ,  Scott Lehto ,  Syed M. Ahmed

IPC分类号： F02M63/00

CPC分类号： F02M61/14 ,  F02M55/02 ,  F02M55/025 ,  F02M2200/02 ,  F02M2200/09 ,  F02M2200/8023 ,  F02M2200/853 ,  F02M2200/856 ,  F02M2200/857

摘要： A direct fuel injection fuel system includes a fuel rail cap and a fuel injector received within the fuel rail cap. A clip extends through slots in the fuel rail cap and engages the fuel rail to support the fuel rail within the fuel rail cap. The fuel rail cap includes a groove adjoining the slots to accept a portion of the clip. The clip engages a shoulder on the fuel injector assembly. The shoulder may be on the injector body or on an adapter secured to the injector body.

摘要翻译： 直接燃料喷射燃料系统包括燃料轨道盖和接收在燃料轨道盖内的燃料喷射器。 夹子延伸穿过燃料轨道盖中的狭槽，并与燃料轨道接合以支撑燃料轨道盖内的燃料轨。 燃料轨道盖包括邻接狭槽的槽以接收夹子的一部分。 夹子接合燃料喷射器组件上的肩部。 肩部可能位于注射器主体上或固定在注射器主体上的适配器上。

公开(公告)号：US4990279A

公开(公告)日：1991-02-05

申请号：US341450

申请日：1989-04-21

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： C08J3/02 ,  C08F2/04 ,  C08F2/06 ,  C08F2/44 ,  C08F265/04 ,  C08F291/00 ,  C10M159/12 ,  C10M171/00 ,  C10N20/06 ,  C10N40/14

CPC分类号： C10M171/001 ,  C08F265/04

摘要： Disclosed are electrorheological (ER) fluids which display improved stability against sedimentation, reduced current density and good electrorheological response. These ER fluids are prepared from monomers which are polymerized by dispersion polymerization in a low conductivity medium which in most embodiments of the invention serves as the dispersion medium for the fluid. the ER fluids are further processed by modifying the polymer particles through polymerization of a hydrophilic monomer to form a hydrophilic shell or globule around the particles. The resulting dispersion is then doped with water to obtain a stable ER fluid. The hydrophilic shell or globule constitutes a minor part of the particle. Water dopant is only absorbed by the hydrophilic portion of the particle and does not enter into the core of the particle. The quantity of water is significantly reduced, which in turn results in a significant reduction of the current density at any given applied field strength.

公开(公告)号：US4896061A

公开(公告)日：1990-01-23

申请号：US283679

申请日：1988-12-13

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： H03K17/06 ,  H03K17/687

CPC分类号： H03K17/6871 ,  H03K17/063

摘要： Improved series and shunt switching cells for selectively switching an RF input signal to an output over a wide range of frequencies and in a linear manner. The series cell includes an input FET which has the source electrode clamped by means of a diode clamping circuit. The diode clamping circuit is in series with a second FET which has applied to the gate electrode a control voltage. A third FET has its source electrode connected to the source electrode of the second FET and has the drain electrode coupled through a diode to the drain electrode of the second FET. The drain electrode of the third FET is coupled to the gate electrode of a fourth FET where the source electrode of the fourth FET controls a series switching FET to enable the input signal to be switched to the output. The series switching FET has its source to drain path in series with a gate electrode of a fifth FET with the source electrode of the fifth FET coupled through a resistor to the drain electrode of the second FET and to the drain electrode of a sixth FET with the sixth FET having its source electrode coupled to the source electrodes of the second and third FETs and the gate electrode for receiving a control signal of opposite polarity to the control signal applied to the gate electrode of the second FET. The switch is a series cell which provides linear switching of the input signal to an output over a wide range of frequencies. A shunt cell also incorporates diode clamping means as well as the additional diode and resistor to enable one to again accurately switch an input signal to an output terminal over a wide range of frequencies in an extremely linear manner and according to the first and second control signals of opposite polarity which are applied to respective FETs included in the shunt circuit.

摘要翻译： 改进的串联和分流开关单元，用于在宽范围的频率上以线性方式选择性地将RF输入信号切换到输出。 该串联电池包括一个输入FET，其中源极通过一个二极管钳位电路钳位。 二极管钳位电路与向栅电极施加控制电压的第二FET串联。 第三FET的源电极连接到第二FET的源电极，并且具有通过二极管耦合到第二FET的漏电极的漏电极。 第三FET的漏电极耦合到第四FET的栅电极，其中第四FET的源电极控制串联开关FET，以使输入信号切换到输出。 串联开关FET具有与第五FET的栅电极串联的源极漏极路径，其中第五FET的源极电极通过电阻器耦合到第二FET的漏极电极并连接到第六FET的漏电极， 第六FET具有耦合到第二和第三FET的源电极的源电极和用于接收与施加到第二FET的栅电极的控制信号相反极性的控制信号的栅电极。 该开关是一个串联单元，其提供输入信号到宽频率范围内的输出的线性切换。 分流单元还包括二极管钳位装置以及附加二极管和电阻器，以使得能够以非常线性的方式再次精确地将输入信号精确地切换到宽频率范围的输出端子，并且根据第一和第二控制信号 施加到分路电路中包括的相应FET的相反极性。

公开(公告)号：US4799962A

公开(公告)日：1989-01-24

申请号：US137841

申请日：1987-12-24

申请人： Syed M. Ahmed

发明人： Syed M. Ahmed

IPC分类号： B01F17/42 ,  B01J13/00 ,  C08J3/03 ,  C08J3/205 ,  C08L1/08 ,  C08L5/00 ,  C08L33/26 ,  C08L39/06 ,  C08L71/02 ,  C08L101/00 ,  C08L101/14

CPC分类号： C08J3/03 ,  C08L1/08 ,  C08J2300/10

摘要： A particulate water-soluble polymer is dispersed in a liquid medium comprised of low molecular weight polyethylene glycol, water and high molecular weight polyethylene glycol in amounts sufficient to impart stability to the dispersion. The dispersion is used in a process for dispersing the water-soluble polymer into aqueous solutions, such as latex paints, comprising preparing the dispersion and feeding the dispersion into the aqueous solution. The dispersion has excellent dispersion stability and fluidity, and is easier to handle and has a higher dissolution rate than the dry powder (particulate) form of the water-soluble polymer.