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    • 3. 发明授权
    • Changing table convertible into a youth bed and play table
    • 将桌子更换成青年床和桌子
    • US5297305A
    • 1994-03-29
    • US913142
    • 1992-07-14
    • Keith A. Williams
    • Keith A. Williams
    • A47D5/00A47D11/00
    • A47D3/00A47D11/00A47D5/00
    • An article of furniture is convertible from an infant changing table to a youth bed frame and play table. The changing table table comprises an upper portion, including the youth bed frame headboard and footboard, sitting on a play table frame. A plurality of horizontal platforms are included for supporting an infant for changing diapers, or for holding other items. When converted to a youth bed frame and play table configuration, the headboard and footboard are connected by separate mattress support rails, included in the invention, to complete the bed frame. A separate table top, included in the invention, is coupled to the table frame to complete the play table.
    • 一件家具可从婴儿换尿布转换成青年床架和桌子。 变台台包括一个上部,包括青少年床架床头板和脚踏板,坐在一个桌面框架上。 包括多个水平平台用于支撑用于换尿布的婴儿或用于保持其他物品。 当转换成青年床架和桌面配置时,床头板和脚踏板通过包括在本发明中的单独的床垫支撑轨连接,以完成床架。 包括在本发明中的单独的桌面被耦合到桌子框架以完成播放表。
    • 6. 发明授权
    • Fluid flow meter
    • 流体流量计
    • US4102187A
    • 1978-07-25
    • US827762
    • 1977-08-25
    • Keith A. Williams
    • Keith A. Williams
    • G01F1/22
    • G01F1/22
    • A fluid flow meter of fluid-tight, sandwiched assembly of three flat faced plates with transparent, fluid impervious sheets interposed between the plates. The central plate is symmetrically tapered to be wider at the upper end than at the lower end. Each of the three plates has at least one elongated slot cut therethrough with the slots in coplanar alignment in the sandwiched assembly. The central, tapered plate has extensions at either end of the slot cut less than all the way through from the same side of the plate. The plate and transparent sheet adjacent to the side of the tapered plate containing the slot extension have perforations therethrough aligned to permit passage of fluid from the outside of the meter through the extensions to the slot in the central plate. A plummet is inserted in the slot in the second plate.
    • 一种液体流体流量计,其具有夹在板之间的透明不透液体的三个平面板的流体密封夹层组件。 中心板对称渐缩,在上端比在下端更宽。 三个板中的每一个具有穿过其中切割的至少一个细长狭缝,其中狭槽在夹持组件中共面对准。 中心的锥形板在槽的任一端处的延伸部分比从板的同一侧通过的方向小。 与包含狭槽延伸部的锥形板的侧面相邻的板和透明片具有穿过其中的穿孔对准,以允许流体从仪表的外部通过延伸部延伸到中心板中的狭槽。 在第二板的狭槽中插入一个直立式的出口。
    • 10. 发明授权
    • Vibration absorber using shape memory material
    • 使用形状记忆材料的减振器
    • US06290037B1
    • 2001-09-18
    • US09295717
    • 1999-04-21
    • Keith A. WilliamsGeorge Tsu-Chih ChiuRobert J. Bernhard
    • Keith A. WilliamsGeorge Tsu-Chih ChiuRobert J. Bernhard
    • F16F710
    • F16F7/1005F16F7/116F16F2222/02F16F2224/0258
    • The present invention relates to a vibration absorber in which an absorber end mass is coupled to a primary mass by means of a cantilevered beam, wherein at least a portion of the beam comprises a shape memory alloy (SMA). Preferably, the end mass is coupled to the primary mass with several discrete SMA wires which may be individually heated. When each of the SMA wires is heated above a predetermined temperature, the SMA material undergoes a phase change which results in a change in the stiffness of the SMA wire. Heating of the various wires in various combinations allows the operational frequency of the absorber to be actively tuned. The frequency of the absorber may therefore be tuned to closely match the current vibrational frequency of the primary mass, thereby allowing the absorber to be adaptively tuned to the frequency of the primary mass in a simple and straightforward manner.
    • 吸振器技术领域本发明涉及一种吸振器,其中吸收体质量块通过悬臂梁联接到初级质量块,其中梁的至少一部分包括形状记忆合金(SMA)。 优选地,末端质量体与几个离散的SMA线连接到主质量块,可以单独加热。 当每根SMA线被加热到高于预定温度时,SMA材料经历相变,导致SMA线刚度的变化。 以各种组合加热各种电线可以使吸收体的工作频率得到主动调节。 因此,可以调节吸收器的频率以紧密地匹配初级质量块的当前振动频率,从而允许吸收器以简单和直接的方式自适应地调谐到主质量的频率。