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    • 32. 发明申请
    • Apparatus and method for generating calibration gas
    • 用于产生校准气体的装置和方法
    • US20050000981A1
    • 2005-01-06
    • US10610632
    • 2003-07-02
    • Wenfeng PengDavid GreenRobert Stewart
    • Wenfeng PengDavid GreenRobert Stewart
    • G01N21/27G01N33/00B67D5/00
    • G01N33/0006G01N21/278
    • An apparatus and method for generating a low concentration of gas within a carrier gas flow employing one or more miniature one-piece cylinders filled under pressure with a pure gas, or a concentrated gas balanced with an inert gas or gas mixture. Released from the cylinder through a pierced or other controlled opening, the flow of the gas is regulated by a pressure regulator and a micro orifice to be blended into a steady stream of diluent gas, typically ambient air, to form a desired gas concentration. No gas is generated if the pressure of the gas in the cylinder, which is monitored constantly by a pressure transducer, is below a predetermined level. The apparatus can be built into a portable device, or an automated docking station (or calibration station) for testing and calibrating gas detection and monitoring instruments, or into a fixed gas detection system for performing such functions.
    • 一种用于在载气流中产生低浓度气体的装置和方法,该装置和方法使用一种或多种用纯气体在压力下填充的微型一体式气瓶,或与惰性气体或气体混合物平衡的浓缩气体。 通过穿孔或其他控制的开口从气缸释放,气体的流动由压力调节器和微孔调节以混合到稳定的稀释气体流(通常为环境空气)中以形成期望的气体浓度。 如果由压力传感器不断监测的气缸中的气体压力低于预定水平,则不产生气体。 该装置可以内置在用于测试和校准气体检测和监测仪器的便携式设备或自动对接站(或校准站)中,或用于执行这些功能的固定气体检测系统中。
    • 35. 发明授权
    • Random-access spoken word electron beam digitally addressable memory
    • 随机访问口语字电子束数字寻址存储器
    • US3975598A
    • 1976-08-17
    • US361107
    • 1973-05-17
    • David GreenHarvey C. NathansonPaul R. Malmberg
    • David GreenHarvey C. NathansonPaul R. Malmberg
    • G10L13/02G11B7/02
    • G10L13/02
    • A method and apparatus for digitally addressing an electron beam to select and then scan one of a plurality of spaced apart analog recordings of spoken words on a target. An electron gun at one end of a return beam vidicon tube provides the electron beam to scan the target positioned at the other end of the tube. The target is a wafer of semiconductive material with an oxide layer facing the electron gun. Variable width openings are etched into the oxide layer such that the edges of the openings define analog recordings. A first electron beam deflection control rapidly directs the beam in the "Y" direction along the ends of the tracks to provide a track count for producing a track access signal by a digitally addressed downcounter. A second electron beam deflection control produces a scanning of the selected track in the "X" direction while the electron beam oscillates at a dither frequency in the "Y" direction to scan the width of the track. Control of the electron beam in the "Z" direction provides a beam blanking during standby mode and provides intensity modulation to improve track acquisition performance and allow variable volume emphasis during the scan mode. The scanning rate in the "X" direction is controlled to produce different word inflections or enunciation rates. A scan signal threshold detector senses the end of a word to enable compiling of a sentence with variable length words.
    • 一种用于对电子束进行数字寻址以选择然后扫描目标上的多个间隔开的口语模拟记录之一的方法和装置。 返回光束管的一端的电子枪提供电子束扫描位于管的另一端的靶。 目标是具有面向电子枪的氧化物层的半导体材料的晶片。 可变宽度的开口蚀刻到氧化物层中,使得开口的边缘限定模拟记录。 第一电子束偏转控制沿着轨道的端部快速地引导沿“Y”方向的波束,以提供用于通过数字寻址的下行计数器产生轨道接入信号的轨道计数。 当电子束以“Y”方向的抖动频率振荡时,第二电子束偏转控制在“X”方向上产生所选轨道的扫描,以扫描轨道的宽度。 电子束在“Z”方向的控制在待机模式下提供光束消隐,并提供强度调制以改善跟踪采集性能,并允许扫描模式下的可变音量强调。 控制“X”方向的扫描速度,产生不同的词变化或发音速率。 扫描信号阈值检测器感测单词的结尾以使得能够编译具有可变长度字的句子。
    • 40. 发明授权
    • Food grater
    • 食物磨坊
    • US08448887B2
    • 2013-05-28
    • US12974481
    • 2010-12-21
    • David GreenDavid ChanKaren Chow
    • David GreenDavid ChanKaren Chow
    • B02C19/20A47J17/00
    • A47J43/25
    • The present matter provides an improved grating surface and graters having an improved grating surface. The grating surface includes one or more cutting blades extending outwardly from the grating surface each including a cutting edge, and at least one groove located on the grating surface and extending towards the cutting edge of the at least one cutting blade. The at least one groove can be located on the cutting blade surface and extend towards and into the cutting edge. The at least one grove can be formed by chemical etching techniques (e.g. in a grating surface of metal such as stainless steel). Grooves and cutting blades can be simultaneously formed in a grating surface by chemical etching.
    • 本发明提供了一种改进的光栅表面和具有改进的光栅表面的光栅。 光栅表面包括从光栅表面向外延伸的一个或多个切割刀片,每个切割刀片包括切割边缘,以及位于光栅表面上并朝向至少一个切割刀片的切割边缘延伸的至少一个凹槽。 所述至少一个凹槽可以位于切割刀片表面上并且朝向和朝向切削刃延伸。 可以通过化学蚀刻技术(例如在诸如不锈钢的金属的光栅表面中)形成至少一个树脂。 沟槽和切割刀片可以通过化学蚀刻同时形成在光栅表面。