公开(公告)号：US3614486A

公开(公告)日：1971-10-19

申请号：US3614486D

申请日：1969-11-10

申请人： PHYSICS INT CO

发明人： SMILEY PARKER C

IPC分类号： B41J9/36 ,  H01L41/083 ,  H01L41/09 ,  H01V7/00 ,  H01V9/00

CPC分类号： H02N2/043 ,  B41J9/36

摘要： Electroexpansive material such as a stack of piezoelectric discs is employed as a driver for an undamped spring-mass system, such as a lever for motion multiplication. A displacement, step or other motion, is obtained without residual motion by controlling the voltage excitation time, such as the period of a square wave voltage pulse to the natural period of the system or the period of the ramp of a step voltage to the natural period of the system. A high-speed printer exemplifies application of such controlled excitation and the advantage of controlling the pulse period. Various forms are disclosed for the lever.

公开(公告)号：US3614483A

公开(公告)日：1971-10-19

申请号：US3614483D

申请日：1970-06-24

申请人： CLEVITE CORP

发明人： BERLINCOURT DON A

IPC分类号： H03H9/17 ,  H03H9/56 ,  H01V7/00

CPC分类号： H03H9/562 ,  H03H9/176 ,  H03H9/566

摘要： Ceramic and crystal resonators and coupled mode filters are disclosed. They are platelike assemblies and operate in the width flexural mode. The operating frequency is determined primarily by the width and thickness of the assembly.

摘要翻译： 公开了陶瓷和晶体谐振器和耦合模式滤波器，其以宽度延伸模式工作。 工作频率主要取决于板的宽度。

公开(公告)号：US3609416A

公开(公告)日：1971-09-28

申请号：US3609416D

申请日：1970-08-12

申请人： UNIV NORTHWESTERN

发明人： EPSTEIN MAX

IPC分类号： H03H9/145 ,  H01V7/00

CPC分类号： H03H9/14561 ,  H03H9/14544

摘要： A surface-wave transducer, fulfilling in a single structure the requirements of both electric and acoustic matching. There is also disclosed a convenient technique for the transduction of signals having a wide frequency bandwidth. The transducer used can be produced utilizing simple photoetching techniques and may be employed at extremely high frequencies.

公开(公告)号：US3604958A

公开(公告)日：1971-09-14

申请号：US3604958D

申请日：1970-05-14

申请人： U S RESEARCH CORP

发明人： PALINI OSCAR

IPC分类号： G01L1/16 ,  G08B13/08 ,  G08B13/14 ,  H01V7/00

CPC分类号： G01L1/16 ,  G08B13/08 ,  G08B13/1472

摘要： An improved sensing transducer for use in a security device to protect objects from unauthorized removal is designed to sense both increases and decreases in pressure and to provide an output signal indicating that a pressure change has occurred. The sensing transducer includes a piezoelectric element and an actuator for transmitting pressure to the piezoelectric element to provide two different types of stress in the element. When an increase or decrease in pressure occurs, the piezoelectric element produces an output signal to indicate a change in pressure.

公开(公告)号：US3598506A

公开(公告)日：1971-08-10

申请号：US3598506D

申请日：1969-04-23

申请人： PHYSICS INT CO

发明人： O'NEILL CORMAC GARRETT

IPC分类号： B06B1/06 ,  F04B17/00 ,  F04B43/09 ,  F04B43/10 ,  H01L41/053 ,  H01L41/083 ,  F04B19/00 ,  H01V7/00

CPC分类号： F04B17/003 ,  B06B1/0611 ,  F04B43/095 ,  F04B43/10 ,  H01L41/083 ,  H02N2/043

摘要： Apparatus is disclosed for doing useful work with electroexpansive material which expands volumetrically in response to an electric field. The material is disposed in a chamber of a fixed volume slightly greater than the volume of the material at rest. The volume intermediate the material and the chamber is filled with a fluid having good insulation properties. When the material expands in response to an electrical signal, insulating fluid is forced out of a passage in a wall of the chamber and performs work by actuating a plunger or diaphragm. Means, such as an intermediate piston, may be employed to isolate the insulating fluid from the hydraulic fluid in a device being thus hydraulically driven, such as a pump valving means or fluid control valve.

公开(公告)号：US3593219A

公开(公告)日：1971-07-13

申请号：US3593219D

申请日：1968-07-15

申请人： TOKO INC

发明人： TSUCHIYA HIDETOSHI

IPC分类号： H03H9/54 ,  H03H9/56 ,  H03H9/04 ,  H01V7/00

CPC分类号： H03H9/562

摘要： At least two filter elements one having a steeply peaked and narrow-band characteristic and one having a wide-band and gently sloping skirt characteristic are formed and electrically connected on a single piezoelectric ceramic plate to form a ceramic filter for high frequencies of 5 MHz. and higher in which thickness shear vibration is utilized, and which exhibits low spurious response of suitable bandwidth and a steep cutoff characteristic.

公开(公告)号：US3592967A

公开(公告)日：1971-07-13

申请号：US3592967D

申请日：1968-05-20

申请人： GEORGE A HARRIS

发明人： HARRIS GEORGE A

IPC分类号： G01M3/24 ,  G01N29/14 ,  H01V7/00 ,  H03F13/00

CPC分类号： G01M3/24 ,  G01N29/14 ,  G01N2291/048 ,  G01N2291/102 ,  G01N2291/105 ,  G01N2291/106 ,  G01N2291/2634 ,  G01N2291/269

摘要： This application discloses a detector for leaks which generate ultrasonic waves, such as illuminating gas leaks, and electrical leaks of the corona or arcing types. An ultrasonic detector is utilized to respond to the ultrasonic waves generated by the turbulence in the atmosphere caused by such leaks, and the electrical signals generated by the ultrasonic transducer are utilized to produce an indication of the presence of the leak, either an audible or visual indication. This application also discloses a band-pass ultrasonic interstage coupler employing piezoelectric elements, and a combination local oscillator and band-pass interstage ultrasonic wave coupler employing piezoelectric elements.

公开(公告)号：US3591862A

公开(公告)日：1971-07-06

申请号：US3591862D

申请日：1970-01-12

申请人： ULTRASONIC SYSTEMS

发明人： WINSTON RONALD H

IPC分类号： B06B3/00 ,  H01V7/00 ,  H01V9/00

CPC分类号： B06B3/00

摘要： The invention covers a system for driving transmission members, particularly made from glass and of a relatively small diameter, at an ultrasonic rate in which the transmission member is coupled to a base member by means of an epoxy, swaging, or a combination thereof. In addition an ultrasonic motor system including an ultrasonic motor, and transmission assembly for use with a receptacle is also disclosed.

公开(公告)号：US3591813A

公开(公告)日：1971-07-06

申请号：US3591813D

申请日：1969-02-28

申请人： BELL TELEPHONE LABOR INC

发明人： COQUIN GERALD A ,  MEITZLER ALLEN H ,  WARNER ARTHUR W JR

IPC分类号： H01L41/18 ,  H01V7/00

CPC分类号： H01L41/18

摘要： The specification describes ultrasonic transducers made from single crystal lithium niobate. Five crystal orientations are given for which transducer characteristics are especially favorable.

公开(公告)号：US3588554A

公开(公告)日：1971-06-28

申请号：US3588554D

申请日：1969-02-12

申请人： PETR GRIGORIEVICH POZDNYAKOV ,  VALENTINA GEORGIEVNA ANDROSOVA

发明人： POZDNYAKOV PETR GRIGORIEVICH ,  ANDROSOVA VALENTINA GEORGIEVNA

IPC分类号： H03H9/19 ,  H01V7/00

CPC分类号： H03H9/19

摘要： A PIEZOELECTRIC QUARTZ VIBRATOR WITH A CRYSTALLINE QUARTZ ELEMENT HAVING THE FORM OF A BAR OF RECTANGULAR CROSS SECTION SO CUT RELATIVE TO THE ORTHOGONAL AXES OF THE QUARTZ CRYSTAL THAT THE LENGTH OF THE CRYSTAL LINE QUARTZ ELEMENT IS DISPOSED IN THE DIRECTION OF THE X-AXIS OF THE QUARTZ CRYSTAL AND THE WIDER SIDE SURFACES ARE ALMOST PARALLEL TO THE SIDE SURFACE R OF THE MAJOR RHOMBOHEDRON OF THE QUARTZ CRYSTAL AND FORM WITH OTHER AXES Y AND Z OF THE QUARTZ CRYSTAL ANGLES APPROXIMATING 45*. ELECTRODES OF OPPOSITE POLAARITY OF THE PIEZOELECTRIC QUARTZ VIBRATOR ARE DISPOSED ON AT LEAST ONE PAIR OF THE OPPOSITE SIDE SURFACES OF THE CRYSTALLINE ELEMENT. THE PIEZOELECTRIC QUARTZ VIBRATOR HAS A LOW (ZERO) TEMPERATURE COEFFICIENT OF FREQUENCY WHICH IS CONTROLLED BY CHANGING THE RATION OF THE THICKNESS TO THE WIDTH OF THE CRYSTALLINE QUARTZ ELEMENT AT A CONSTANT VALUE OF ITS CUT ANGLE.