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公开(公告)号：US4090205A
公开(公告)日：1978-05-16
申请号：US785059
申请日：1977-04-06
摘要： A jet drop printer prints graphic information upon an oscillating printing medium. The printer has a row of jet forming nozzles which produce a row of spaced drop streams. The drops in the streams are selectively charged, deflected and caught, so that uncharged drops produce intelligible graphic information on the printing medium. The spacing between the jets is such that they cannot print contiguous traces upon an ordinary transported printing medium. Contiguous printing is accomplished by lateral oscillation of the printing medium. The oscillation of the printing medium causes each jet to be directed at a plurality of lateral printing positions on a sequential basis, and data representing printing information for the different printing positions is multiplexed into the drop switching system in synchronism with the oscillation of the printing medium.Oscillation of the printing medium may be accomplished by a web transport system including a cylindrical roller and an axially driven oscillator connected thereto. The roller has an internal cavity large in diameter at the midpoint of the roller and relatively small in diameter at the support points of the roller. This causes an axially varying roller cross-sectional area which reduces roller distortion at the relative high axial vibration frequency.
摘要翻译： 喷墨滴打印机在振动打印介质上打印图形信息。 打印机具有一排喷射形成喷嘴，其产生一排间隔的液滴流。 流中的液滴被选择性地充电，偏转和捕获，使得不带电的液滴在打印介质上产生可理解的图形信息。 射流之间的间距使得它们不能在普通的运送打印介质上打印连续的轨迹。 连续打印是通过打印介质的横向振荡来实现的。 打印介质的振荡使得每个喷射器在顺序的基础上指向多个横向打印位置，并且表示不同打印位置的打印信息的数据与打印介质的振荡同步地复合到液滴切换系统 。
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公开(公告)号：USD571239S1
公开(公告)日：2008-06-17
申请号：US29284928
申请日：2007-09-18
申请人： David G. Holmes
设计人： David G. Holmes
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公开(公告)号：USD530789S1
公开(公告)日：2006-10-24
申请号：US29229000
申请日：2005-05-02
申请人： David G. Holmes
设计人： David G. Holmes
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公开(公告)号：US4479757A
公开(公告)日：1984-10-30
申请号：US431255
申请日：1982-09-30
CPC分类号： F03B3/125 , Y02E10/223 , Y02E10/226
摘要： An improved Francis-type turbine runner permitting a significant reduction in cavitation is provided by shaping the runners extending between the ring and crown in such a fashion that at least a portion of the area of the streamlined suction face side of each blade is (when used as a turbine) exposed when viewed in the axial direction looking away from the crown.
摘要翻译： 通过以使得每个叶片的流线型吸入面侧的区域的至少一部分（当使用时）的方式使环和冠之间延伸的流道成形来提供允许空化显着减小的改进的弗朗西斯型涡轮流道 作为涡轮机）当从轴向观察时远离冠部露出。
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公开(公告)号：US4373608A
公开(公告)日：1983-02-15
申请号：US105599
申请日：1979-12-20
申请人： David G. Holmes
发明人： David G. Holmes
CPC分类号： H02K5/24 , G10K11/172 , H01F27/33
摘要： A tuned sound barrier for machines which radiate sound primarily at a few constant, discrete frequencies includes an array of mechanical resonators distributed over the surface of a sound barrier. Each resonator of the array is tuned to present a high mechanical impedance to transmission of mechanical vibration at one of the discrete frequencies emitted by the source machine. The tuned sound barrier may be either a free-standing sound barrier or an attachment to a housing for the machine.
摘要翻译： 主要以几个恒定的离散频率辐射声音的机器的调谐声屏障包括分布在声屏障表面上的机械谐振器阵列。 该阵列的每个谐振器被调谐以呈现高机械阻抗以在由源机发射的离散频率之一处的机械振动的传输。 调谐的声屏障可以是独立的声屏障或者用于机器的外壳的附件。
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