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| Number | Title | Issue Date |
| 8174166 | Uniformly distributed lead zirconate titanate strain sensor The invention as disclosed is a strain sensor that locates and quantifies the strain energy from a structure. The strain sensor has a lead zirconate titanate wafer with a circular shape such that the shape does not directionally restrict the signal of the sensor. | 05/08/2012 |
| 8154175 | Sensing device A sensing device is disclosed that includes a bistable snap mechanism having a snap element operatively connected to an input element and an output element. The snap element has two discrete positions that provide the output element in one of first and second positi... | 04/10/2012 |
| 7994690 | Component for piezoelectric force or pressure sensors, held together by an electrically insulating film The invention relates to a component for installation in force or pressure sensors, in particular in a glow plug. The component comprises a disc-type or punched-disc type measuring element consisting of a piezoelectric material, punched-disc type or disc-type electr... | 08/09/2011 |
| 7977851 | Push button switch A push button switch including a piezoelectric element (10) which is arranged between a first electrode (16) and a second electrode (18) in such a manner that, when a pressure is exerted on the piezoelectric element, an electric voltage is gener... | 07/12/2011 |
| 7965018 | Acoustic sensor with piezo-arrangement film Provided is an acoustic sensor for measuring a sound wave propagating through a gas such as air or a fluid such as water and an elastic wave propagating through a solid medium, and more particularly, an acoustic sensor with a piezo-arrangement film capable of detect... | 06/21/2011 |
| 7839057 | Movement detector A movement detector which is rotatably installed on a base member includes a rotating member which has a body portion, and a connecting portion which rotatably connects the body portion to the base member, a piezoelectric layer which is formed on the connecting port... | 11/23/2010 |
| 7839056 | Piezoelectric pressure sensor A piezoelectric pressure sensor includes—an outer housing separated by an annular gap from an inner housing, which inner housing is attached to the outer housing on the pressure side. At least one piezoelectric measuring element is positioned between a diaphragm p... | 11/23/2010 |
| 7821182 | Device for actuating a sanitary appliance The invention relates to a device for actuating a sanitary appliances which comprises at least one sensor arranged in a housing and provided with a pressure-sensitive element and is actuatable by applying a force on the sensor sensitive area for deforming said eleme... | 10/26/2010 |
| 7781940 | Piezoelectric tactile sensor A novel flexible tactile sensor for sensing the force direction was designed by introducing the concept of structural electrodes on a piezoelectric film. The structural electrodes comprised an elastomeric column and distributed microelectrodes between the column and... | 08/24/2010 |
| 7663295 | Method and system for measuring physical parameters with a piezoelectric bimorph cantilever in a gaseous or liquid environment A piezoelectric bimorph cantilever is used for determining physical parameters in a gaseous or liquid environment. The sensor works as a driven and damped oscillator. Contrary to common cantilever sensor systems, the piezoelectric film of the bimorph cantilever acts... | 02/16/2010 |
| 7635942 | Sensor apparatus A sensor apparatus and method for detecting an environmental factor is shown that includes an acoustic device that has a characteristic resonant vibrational frequency and mode pattern when exposed to a source of acoustic energy and, further, when exposed to an envir... | 12/22/2009 |
| 7608985 | Method of detecting acceleration in vehicles Piezomagnetic, magneto-strictive, or electro-strictive material particles may also be distributed throughout the structural material of the structural member, which serve to amplify and otherwise enhance the signals from the piezoelectric material particles. The pie... | 10/27/2009 |
| 7589457 | Nondestructive reliability monitoring method for adhesively bonded structures whose sensitivity is improved by using piezoelectric or conductive materials A method is disclosed for testing bonded part integrity of bonded structures with increased sensitivity and in a nondestructive manner. The method includes the steps of: mixing a piezoelectric material or an electrically conductive material with an adhesive agent, c... | 09/15/2009 |
| 7589456 | Digital capacitive membrane transducer A capacitive membrane is used as a digital sensor. Membranes act as binary devices, such as being in a collapsed or non-collapsed state. By providing drum heads (membranes and associated gaps) with different response characteristics, the drum heads of an element dig... | 09/15/2009 |
| 7554246 | Piezoelectric composite device, method of manufacturing same, method of controlling same, input-output device, and electronic device A piezoelectric composite device including: a feeding electrode; a common electrode; a signal detecting electrode; a first piezoelectric element joined between the feeding electrode and the common electrode; and a second piezoelectric element joined between the comm... | 06/30/2009 |
| 7548013 | High temperature piezo buzzer A piezoelectric buzzer includes a vibrating layer capable of withstanding temperatures in excess of 260° C. for at least five minutes while still maintaining its ability to vibrate and produce a buzzing sound at a level of at least 80 dB, and a high temperature pie... | 06/16/2009 |
| 7548012 | Multi-layer piezoelectric measuring element, and pressure sensor or force sensor comprising such a measuring element A piezoelectric measuring element (9) consists of at least two piezoelectric crystals (1) showing a transversal effect for the measurement of axially acting forces and/or pressures as well as to a pressure or force sensor comprising said element. The c... | 06/16/2009 |
| 7525238 | Ground insulated piezoelectric sensor for the measurement of acceleration or pressure The invention describes a sensor comprising an element package 2 including piezoelectric elements with an upper area 6 and a lower area 7. A preload sleeve 3 surrounds the said upper area 6 of the said element package 2, whi... | 04/28/2009 |
| 7508119 | Multifunction sensor system for electrical machines A multifunction sensor system for an electrical machine includes a piezoelectric vibration sensor a resistive temperature and partial discharge sensor which may optionally be integral with the piezoelectric vibration sensor; and packaging enclosing the vibration, th... | 03/24/2009 |
| 7498721 | Resonant sensor assembly A triple beam resonator (10) is provided with three beams or tines (12, 14, 16) aligned in parallel alongside each other and joined at a decoupling zone (18) at each end, which is in turn connected to the surrounding material. The central beam (... | 03/03/2009 |
| 7462977 | High temperature pressure transducer having a shaped ceramic face A high temperature pressure transducer includes an extended tubular member having an opening from a front to a back surface. The tubular member is preferably fabricated from a metal. At the front end of the tubular member is a ceramic sensor face or tip which basica... | 12/09/2008 |
| 7449819 | Knock sensor A knock sensor includes: a base including an annular flange portion and a cylindrical portion, an annular piezoelectric element fitted onto the cylindrical portion, electrode portions oppositely formed on front and rear surfaces of the annular piezoelectric element,... | 11/11/2008 |
| 7443075 | Entrapment detecting system An entrapment detecting system includes a detection portion provided at an opening/closing apparatus for detecting an acceleration thereof on the basis of an output from a piezoelectric sensor for outputting a voltage corresponding to the acceleration and a control ... | 10/28/2008 |
| 7429801 | System and method for generating electric power from a rotating tire's mechanical energy A tire assembly with integrated power generation features includes one or more piezoelectric devices configured to generate electric charge therein upon being subjected to mechanical strains associated with flexure of tire or wheel components. The piezoelectric devi... | 09/30/2008 |
| 7397168 | Transducer housing for an ultrasonic fluid meter A transducer housing for an ultrasonic fluid meter. At least some of the illustrative embodiments a transducer housing comprising a housing having a proximal end, a distal end and an internal volume, the housing couples to a spoolpiece of an ultrasonic meter, and an... | 07/08/2008 |
| 7367228 | (Seat) force measuring device with a spring housing, inductive sensor and stops The two housing parts are used as springing means which are mounted behind each other, thereby extending the full spring path. Despite the soft springs obtained by the housing, the individual housing parts can be manufactured from a stable material so that they rema... | 05/06/2008 |
| 7355327 | Laminated piezoelectric/electrostrictive element A laminated piezoelectric element is applicable as a driving source of opening and closing mechanism of an injection nozzle in a fuel injecting device. A laminated piezoelectric/electrostrictive element 1 has: a columnar laminate 10 constituted by alte... | 04/08/2008 |
| 7335336 | Sensor array using lateral field excited resonators A sensor for sensing a property of a plurality of analytes includes a substrate having a resonant frequency that varies based on contact with a predetermined property of an analyte. The substrate has an analyte contact surface and a non-analyte contact surface locat... | 02/26/2008 |
| 7328624 | Probe for measuring parameters of a flowing fluid and/or multiphase mixture A probe 10,170 is provided that measures the speed of sound and/or vortical disturbances propagating in a single phase fluid flow and/or multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, ... | 02/12/2008 |
| 7325459 | Identifying unit for working machine and pressure apparatus A working machines includes an identifying unit. A force sensor detachably supports a working head in the identifying unit. A controller circuit is designed to identify the working head based on the load detected at the force sensor. When the working head is replace... | 02/05/2008 |
| 7327068 | Sensors and related devices and methods Sensors that include SAW devices, related methods, and related devices. Many embodiments are included. Some of the present sensors include an inlet structure; a mounting structure that is spaced apart from the inlet structure, the mounting structure having a top sur... | 02/05/2008 |
| 7317234 | Means of integrating a microphone in a standard integrated circuit process A means of integrating a microphone on the same integrated circuit die as other electronics in the system is disclosed. The structure uses solder bump technology to form a gap between an electrode on the silicon and another electrode. Charge is stored on the capacit... | 01/08/2008 |
| 7288872 | Damping and stabilization for linear motor stage A system that facilitates damping of mechanical vibration associated with machinery that is subject to such mechanical vibration. The system comprises machinery with at least one moveable part and a piezoelectric actuator that is selectively applied to the machinery... | 10/30/2007 |
| 7285894 | Surface acoustic wave devices for high temperature applications A Surface Acoustic Wave device including a resonator or a delay line formed from an electrically conductive material having a high melting temperature disposed upon the surface of a substrate formed from one of the LGX family of crystals or gallium phosphate. The Su... | 10/23/2007 |
| 7278495 | Horseshoe A horseshoe includes a thin, resilient member, embedded in a moldable material such as plastic or composite. Due to this dual construction, the horseshoe is strong yet light in weight. The moldable material has a thickness which varies across the horseshoe, so as to... | 10/09/2007 |
| 7274623 | Method and system for operating capacitive membrane ultrasonic transducers A novel operation regime for capacitive micromachined ultrasonic transducers (cMUTs). The collapse-snapback operation in which the center of the membrane makes intermittent contact with the substrate. This combines two distinct states of the membrane (in-collapse an... | 09/25/2007 |
| 7260997 | Device for adjusting and verifying the tension force of screwed connections The invention relates to a device for adjusting and/or verifying the axial force in screwed connections. The inventive device contains a control device for limiting an axial force acting between two force application elements of the screwed connection. To this end, ... | 08/28/2007 |
| 7257984 | Miniaturized sensor device for detecting characteristics of a fluid, in particular a lubricating oil A miniaturized sensor device comprises at least one pair of active projecting elements or cantilevers, which are set parallel to one another and at a micrometric or sub-micrometric distance apart and are designed to be submerged at least partially in a fluid. Each p... | 08/21/2007 |
| 7253648 | Signal acquisition probe having a retractable double cushioned probing tip with EOS/ESD protection capabilities A measurement probe has a spring loaded probe assembly and a pressure sensor disposed in a housing. The pressure sensor forms an electrical switch for passing an activation signal to a EOS/ESD protection module in response to axial movement of the housing relative t... | 08/07/2007 |
| 7250708 | Electric switch, especially a piezo switch, with optical and/or mechanical feedback of the switching operation The invention relates to an electric switch, especially a piezo switch, with optical and/or mechanical feedback of the switching operation. The switch contains at least one switching element, especially beneath a cover panel, which can be activated by means of an ac... | 07/31/2007 |
