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1. 发明授权

US3946256A System for generating or sensing transverse elastic bulk waves in solids 失效
标题翻译：用于在固体中产生或感测横向弹性体波的系统
公开(公告)号：US3946256A
公开(公告)日：1976-03-23
申请号：US206667
申请日：1971-12-10
申请人： Clifford K. Day , George G. Koerber
发明人： Clifford K. Day , George G. Koerber
IPC分类号： G01H1/04 , G01N29/24 , H01L41/04
CPC分类号： G01N29/2437 , G01H1/04 , G01N2291/0422 , G01N2291/0423 , G01N2291/0425
摘要： A device for generating or sensing transverse elastic bulk waves in solids includes a piezoelectric material engaging a surface of the solid and having a two-fold axis or equivalent symmetry extending parallel to the surface of the solid. A pair of electrodes are located on a surface of the transducer extending perpendicular to the surface of the solid which the material contacts. Each electrode has one or more conductive fingers elongated in a direction parallel to the two-fold axis of the material. The fingers of the electrodes are interlaced. When used as a generator of bulk waves, a source of alternating voltage excites the electrodes. The electrodes thus generate deep surface waves in the piezoelectric material which are transformed into bulk waves in the test solid. Similarly, bulk waves in the test solid are transformed into deep surface waves in the piezoelectric material which may then be sensed by the electrodes.
摘要翻译：用于产生或感测固体中的横向弹性体波的装置包括与固体表面接合并具有平行于固体表面延伸的双折轴或等效对称的压电材料。一对电极位于换能器的表面上，该表面垂直于材料接触的固体的表面延伸。每个电极具有在平行于材料的双重轴线的方向上伸长的一个或多个导电指状物。电极的指状物是交错的。当用作体波的发生器时，交流电压源激发电极。电极因此在压电材料中产生深表面波，在测试固体中转变成体波。类似地，测试固体中的体波被转换成压电材料中的深表面波，然后可以由电极感测。

2. 发明授权

US5239431A Head lift limiter for a disk drive 失效
标题翻译：磁头驱动器的磁头限位器
公开(公告)号：US5239431A
公开(公告)日：1993-08-24
申请号：US842280
申请日：1992-02-26
申请人： Clifford K. Day , Wayne E. Foote , Robert R. Hay , Paul K. Mul
发明人： Clifford K. Day , Wayne E. Foote , Robert R. Hay , Paul K. Mul
IPC分类号： G11B5/54 , G11B17/038 , G11B21/22 , G11B33/08
CPC分类号： G11B17/038 , G11B21/22 , G11B33/08 , G11B5/54
摘要： Resistance to shock forces having components acting parallel to the spindle axis of a disk stack is provided by spacing the surface of a circumferential flange of a disk spacer a distance above the surface of a disk in the disk stack which is sufficient to clear the magnetic head and flexure assembly therebeneath during movement thereof during flight to and from a parked position between the confronting surfaces of the circumferential flange and the disk.
摘要翻译：通过将圆盘间隔件的周向凸缘的表面与磁盘组中的盘表面之间的距离间隔开来提供抵抗具有平行于磁盘堆的主轴轴线的部件的冲击力，其足以清除磁头以及在飞行期间在其周向凸缘和盘的相对表面之间的停放位置的运动期间的挠曲组件。

3. 发明授权

US4047103A Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor 失效
标题翻译：用于测量液态金属核反应堆核心部件位移的涡流当前位置指示装置
公开(公告)号：US4047103A
公开(公告)日：1977-09-06
申请号：US547074
申请日：1975-02-04
申请人： Clifford K. Day , James L. Stringer
发明人： Clifford K. Day , James L. Stringer
IPC分类号： G01V3/10 , G21C17/10 , G01R33/12
CPC分类号： G21C17/10 , G01V3/105
摘要： Apparatus for measuring displacements of core components of a liquid metal fast breeder reactor by means of an eddy current probe. The active portion of the probe is located within a dry thimble which is supported on a stationary portion of the reactor core support structure. Split rings of metal, having a resistivity significantly different than sodium, are fixedly mounted on the core component to be monitored. The split rings are slidably positioned around, concentric with the probe and symmetrically situated along the axis of the probe so that motion of the ring along the axis of the probe produces a proportional change in the probes electrical output.
摘要翻译：用于通过涡流探针测量液态金属快速增殖反应器的核心部件的位移的装置。探针的有效部分位于支撑在反应堆芯支撑结构的固定部分上的干燥套管内。具有显着不同于钠的电阻率的金属分裂环固定地安装在待监测的核心部件上。开口环可滑动地定位在与探头同心的位置上，并且沿着探针的轴线对称地定位，使得环沿着探针的轴线的运动产生探针电输出的比例变化。

4. 发明授权

US4083225A On-line ultrasonic gas entrainment monitor 失效
标题翻译：在线超声波气体夹带监测仪
公开(公告)号：US4083225A
公开(公告)日：1978-04-11
申请号：US667924
申请日：1976-03-17
申请人： Clifford K. Day , Herbert N. Pedersen
发明人： Clifford K. Day , Herbert N. Pedersen
IPC分类号： G01N29/032 , G01N29/02
CPC分类号： G01N29/032
摘要： Apparatus employing ultrasonic energy for detecting and measuring the quantity of gas bubbles present in liquids being transported through pipes. An ultrasonic transducer is positioned along the longitudinal axis of a fluid duct, oriented to transmit acoustic energy radially of the duct around the circumference of the enclosure walls. The back-reflected energy is received centrally of the duct and interpreted as a measure of gas entrainment.One specific embodiment employs a conical reflector to direct the transmitted acoustic energy radially of the duct and redirect the reflected energy back to the transducer for reception. A modified embodiment employs a cylindrical ultrasonic transducer for this purpose.
摘要翻译：采用超声波能量检测和测量通过管道输送的液体中存在的气泡数量的装置。超声波换能器沿着流体管道的纵向轴线定位，定向成围绕围绕围绕壁的周边的管道径向传递声能。后反射能量被接收在管道的中心，并被解释为气体夹带的量度。

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