公开(公告)号：US06118330A

公开(公告)日：2000-09-12

申请号：US252641

申请日：1999-02-19

Applicant: Peter R. Bossard

Inventor： Peter R. Bossard

IPC: G05F3/20 ,  G05F3/02

CPC classification number: G05F3/205

Abstract: A looped circuit for generating a variable bias voltage. The looped circuit includes a variable current source having a current output that is dependent upon the variable bias voltage. The looped circuit also includes a capacitor that is periodically coupled to the current source for a predetermined period of time, wherein the current source charges the capacitor during each predetermined period of time. At least one subcircuit is provided for varying the variable bias voltage, wherein the variable bias voltage automatically causes the current source to charge the capacitor to a predetermined reference voltage during each predetermined period of time. Accordingly, the generated bias voltage will vary with temperature and other external variables. However, the ratio of the current produced by the current source divided by the capacitance of the capacitor is equal to the ratio of the predetermined reference voltage divided by the referenced predetermined period of time. This ratio remains constant regardless of variations in process and temperature.

Abstract translation: 用于产生可变偏置电压的环路电路。 环路电路包括具有取决于可变偏置电压的电流输出的可变电流源。 环路电路还包括在预定时间段周期性地耦合到电流源的电容器，其中电流源在每个预定时间段期间对电容器充电。 提供至少一个子电路用于改变可变偏置电压，其中可变偏置电压在每个预定时间段期间自动使电流源将电容器充电到预定参考电压。 因此，产生的偏置电压将随温度和其他外部变量而变化。 然而，由电流源产生的电流除以电容器的电容的比率等于预定参考电压除以参考的预定时间段的比率。 无论工艺和温度如何变化，该比例都保持不变。

公开(公告)号：US4737169A

公开(公告)日：1988-04-12

申请号：US855071

申请日：1986-04-22

Applicant: Peter R. Bossard

Inventor： Peter R. Bossard

IPC: B03C3/08 ,  B03C3/155 ,  B03C3/41 ,  B03C3/01 ,  B03C3/45

CPC classification number: B03C3/155 ,  B03C3/08 ,  B03C3/41

Abstract: An improved electrostatic filter particularly for use in high performance clean rooms for the semiconductor industry is achieved by forming a layer of wires in a "plane" having corrugations along an axis perpendicular to the axes of the wires. The "plane" is designed to mate with the corrugations of a mechanical filter placed immediately upstream in the air flow path. Alternate wires of the layer are maintained electrically at opposite polarities to strengthen the fields and the corrugations permit closer movement of particles to the wires without unacceptable constriction of the air flow. A multilayered filter produces attractive field configurations, like those achieved by corrugated single plane filters herein, in the absence of a corrugated geometry.

Abstract translation: 特别是用于半导体工业的高性能洁净室的改进的静电过滤器通过在垂直于电线的轴的轴线上形成具有波纹的“平面”中的电线层来实现。 “平面”设计成与紧邻空气流动路径上游的机械过滤器的波纹配合。 该层的交替电线以相反的极性保持电气，以加强电场，并且波纹允许颗粒更接近电线的运动，而不会导致气流的不可接受的收缩。 多层滤波器在没有波纹几何形状的情况下产生吸引力的场配置，如在这里通过波纹单平面滤波器实现的。

公开(公告)号：US6113071A

公开(公告)日：2000-09-05

申请号：US216772

申请日：1998-12-21

Applicant: Peter R. Bossard

Inventor： Peter R. Bossard

IPC: F16K1/38 ,  F16K31/00

CPC classification number: F16K1/385

Abstract: A gas flow restriction device for restricting the flow rate of heated gas in a conduit. The flow restriction device is essentially a two piece assembly that includes a valve housing and a valve gate structure that sits within the housing. The valve housing has a first end, a second end and an open central passage extending from the first end to the second end. The open central passage includes a internally tapered section proximate its first end and an internally threaded section proximate its second end. The valve gate structure has a first end a second end, a externally tapered section proximate its first end and an externally threaded section proximate its second end. The valve gate structure passes into the open central passage of the valve housing so that the externally tapered section of the valve gate structure is disposed a predetermined distance within the internally tapered section of the valve housing. At this location, the externally threaded section of the valve gate structure engages the internally threaded section of the valve housing. By rotating the valve gate structure, the threaded interconnection is effected and the valve gate structure moves in relation to the valve housing.

Abstract translation: 一种用于限制管道中加热气体的流量的气体流量限制装置。 流量限制装置基本上是两件式组件，其包括阀壳体和位于壳体内的阀门门结构。 阀壳体具有从第一端延伸到第二端的第一端，第二端和敞开的中心通道。 开放的中心通道包括靠近其第一端的内部锥形部分和靠近其第二端的内螺纹部分。 阀门结构具有第一端，第二端，靠近其第一端的外锥形部分和靠近其第二端的外螺纹部分。 阀门结构进入阀壳体的开放的中心通道，使得阀门结构的外部锥形部分在阀壳体的内部锥形部分内设置预定距离。 在该位置，阀门结构的外螺纹部分与阀壳体的内螺纹部分接合。 通过旋转阀门结构，实现螺纹互连并且阀门结构相对于阀壳体移动。