KISTLER HOLDING AG Patent applications |
Patent application number | Title | Published |
20160003864 | METHOD FOR PRODUCING AN ACCELERATION SENSOR - The invention relates to a method for producing an acceleration sensor having a housing ( | 01-07-2016 |
20140201968 | METHOD FOR CONNECTING A DIAPHRAGM TO A SENSOR HOUSING - A method is provided for connecting a diaphragm to a housing of a pressure or force sensor, wherein a measurement element is attached in the housing and can capture a load acting from the outside onto the diaphragm during the use of the finished sensor. A housing ring surface or the housing is situated opposite a diaphragm ring surface of the diaphragm, which are subjected to compressive loading by the load during use of the sensor. A first connection is produced in an inner region between the housing ring surface and the diaphragm ring surface until they rest against each other radially outside the first connection. Then a second connection connects the housing ring surface and the diaphragm ring surface to one another radially outside the first connection up to a shared outer edge. Here, a defined connection depth of the entire double connection is maintained. | 07-24-2014 |
20130298625 | FORCE SENSOR SYSTEM AND METHOD FOR MEASURING FORCES OF FILM STRIPS OR SHEET METAL STRIPS DURING ROLLING - A force sensor system for measuring forces that are transferred from film strips or sheet metal strips to a measuring roll during rolling in roll stands can be inserted into a cylindrical hole of a measuring roll under preload. The force sensor system includes a first force sensor and a preloading device for creating a preload on the first force sensor, so that the first force sensor can determine a force acting radially on the measuring roll. The first force sensor has a high sensitivity, which corresponds to the required measurement sensitivity of the contact force of the film strip or sheet metal strip. The force sensor system includes a second force sensor, which also can be placed under preload by means of the preloading device. The second force sensor is a statically measuring force sensor. | 11-14-2013 |
20130167650 | PRESSURE SENSOR HAVING A PIEZORESISTIVE SENSOR CHIP ELEMENT - A piezoresistive sensor chip element of a pressure sensor has lower face with an outer edge, an adhesion area and a non-adhesion area. The chip has a closed chip cavity for measuring the pressure of a medium flowing around the chip. The upper face of a substrate is fastened only at the adhesion area of the chip. The non-adhesion area extends at least over a circular area arranged centrally on the lower face and covers a third of the lower face's total area and extends over at least one connection area from the circular area to the edge of the lower face. The pressure in the pressure medium can spread through the connection area into a space under the non-adhesion area on the element lower face. The substrate has a recess located centrally under the sensor chip element. | 07-04-2013 |
20130123967 | DEVICE AND METHOD FOR CONTROLLING THE COURSE OF A PROCESS IN THE PRODUCTION OF PARTS - A device for controlling the course of a process in the production of parts in a tool with or without subsequent reject separation, includes a sensor, which is fitted to the tool to detect measured values during a production process, which can mean an assembly process, a jointing process and any other process, until the part to be produced is finished and ready for delivery. The device includes an output element and a data processing system having a display for reading in and displaying the detected measured values. The data processing system analyzes target parameters provided by the user and the detected measured values to determine an output quantity that is transferred by the output element for the purpose of controlling the course of the process. Operation of the device performs a method for controlling the course of a process. | 05-16-2013 |
20130056893 | METHOD FOR DETECTING INSERT OBJECTS IN AN INJECTION-MOULDED PART - A method for detecting an insert object in an injection-moulded part pertains to an insert object that is fixedly connected to the injection-moulded part during the injection moulding by the insert object being placed in a cavity, which is surrounded by a mould wall of a mould, before the beginning of the injection-moulding cycle. The mould wall includes at least one temperature or pressure sensor, which records and analyzes at least one measured value at at least one point in time during an injection-moulding cycle. On the basis of the analysis, it is established whether an insert object was present at a specific location in the cavity during the injection-moulding cycle. Finally, after it is ejected, the injection-moulded part is sorted as an accepted part or a rejected part on the basis of the analysis of the measured value. | 03-07-2013 |
20130024152 | METHOD FOR CALIBRATING WIM-SENSORS - A method for calibrating a WIM (Weigh in Motion) sensor built into a road during travel of a calibrating vehicle measures the dynamic wheel force on the road and on the WIM sensor directly at the measuring wheel, depending on time or location. These wheel force data are transmitted to an evaluating unit. As the calibrating vehicle passes over, WIM signal data are simultaneously measured at the WIM sensor and transmitted to the evaluating unit. The wheel force data are synchronised with the WIM signal data in the evaluating unit. A calibration function is determined by comparing the dynamic wheel force data with the WIM signal data. | 01-24-2013 |
20120268202 | DIGITAL CHARGE AMPLIFIER AND METHOD FOR CONVERTING CHARGE SIGNALS INTO DIGITAL SIGNALS - A circuit for a charge amplifier for converting piezoelectric measurement signals continuously sets the output signal of the amplifier to a value close to zero, such that a reset switch becomes unnecessary. The amplifier includes a pulse generator that provides the output signal of the amplifier in the form of pulses, which are easy to transmit with low interference. The pulse frequency is proportional to the rate of change of charge. The pulses, which are added in a counter, represent a value proportional to the change in the charge since the last counter reset, which is proportional to the present measured value at the measurement element. | 10-25-2012 |
20120266683 | PRESSURE SENSOR FOR LOW-VISCOSITY MEDIA - A sensor for measuring pressures in low-viscosity media for use in injection moulding includes a housing with an axis A, a flat end face to be exposed to a pressure space, and a diaphragm that is arranged on the end face and is permanently connected to the housing. A measuring element that can infer a pressure prevailing in the pressure space on the basis of deflection of the diaphragm is arranged behind the diaphragm. A pressure sleeve that is tightly connected to the sensor on the end face and is arranged at a distance from the housing with a gap behind this connection is arranged coaxially with the housing axis A outside the housing. The gap extends axially further across the measuring element than the region of the force path in the direction away from the pressure space. | 10-25-2012 |
20120090168 | ELECTROMECHANICAL JOINING MODULE HAVING A FORCE TRANSDUCER - An electromechanical joining module for applying a linear force to a joining element, includes a stator, which represents the stationary part of the joining module, a tappet, which can be linearly extended out of the stator and which has an outer tappet end, and a force transducer for detecting forces that are applied to the joining element during the operation of the tappet end. The force transducer is attached in the area of the tappet end and has sensor electronics for wirelessly transmitting measurement data by means of near-field and far-field telemetry. | 04-19-2012 |
20110283820 | MULTI-SENSOR HEAD - A multi-sensor head for installation in an installation opening of a workpiece that can be exposed to a process includes a first sensor site for receiving a first sensor and at least one second sensor site for receiving a second sensor, so that the first measured data can be captured with the first sensor and second measured data with the second sensor. The second sensor site is designed and disposed in the multi-sensor head such that it can be equipped with sensors of different types for performing a measurement. The multi-sensor head can be part of a measurement system using two exchangeable sensors of different types in the multi-sensor head. The multi-sensor head can be part of a workpiece. | 11-24-2011 |
20110146370 | SENSOR HAVING AN INTERNAL CALIBRATION STRUCTURE - A sensor has a measuring element that measures forces. The measuring element measures direct forces or measurement variables which are converted into forces by means of a measurement variable converter in the sensor. The sensor includes a structure that converts test pressure guided into the sensor into a test force that stresses the measuring element in the same manner as the phenomenon that is to be measured by the sensor. | 06-23-2011 |
20110101844 | SPARK PLUG HAVING PRESSURE SENSOR - A spark plug is intended for combustion engines and comprises a metal housing having a ground electrode disposed at the front and a thread having a rear sealing surface for installation in the combustion engine. The spark plug in particular includes a pressure sensor disposed laterally in the housing for determining a combustion chamber pressure and a ceramic body having a center electrode. The ceramic body is disposed in the housing next to the pressure sensor and acting as an electric insulator. As viewed from the combustion chamber, the ceramic body defines a front clamping shoulder and a rear stop for clamping the ceramic body into the housing. The outside diameter of the ceramic body gradually decreases in the region of the thread located between the rear sealing surface and the front clamping shoulder. | 05-05-2011 |
20110088460 | PRESSURE SENSOR FOR MEASUREMENTS IN A CHAMBER OF AN INTERNAL COMBUSTION ENGINE - A pressure sensor for measurements in a chamber of an internal combustion engine, in particular a pressure-measuring glowplug, comprises a housing, a pressure element for picking up a pressure, and a measuring element arranged in the housing downstream of the pressure element in the direction of the pressure and having a sensor element and a diaphragm. This diaphragm is permanently connected at its first end to the pressure element, and at its second end it is directly or indirectly permanently connected to the housing at a connection, with the pressure element being supported on the measuring element via the diaphragm. | 04-21-2011 |
20100251808 | PART FOR MEASURING FORCES OR PRESSURES, AND SENSOR COMPRISING SUCH A PART - A part to be mounted into force or pressure sensors includes an annular measuring element made of piezoelectric material. First and second electrodes rest against respective opposite sides of the measuring element and are provided with wires. An electrically insulating transmission member laterally adjoins the first electrode, across from the measuring element. Another electrically insulating insulation member laterally adjoins the second electrode, across from the measuring element. All said components are mounted within the part in such a way as to be centered relative to each other. The external face of the transmission member and the external face of the insulation member which face away from and run parallel to the electrodes are designed in a very planar manner, having a levelness of less than 10 μm. | 10-07-2010 |
20100242616 | MEASURING ARRANGEMENT IN AN INJECTION-MOULDING SYSTEM - A measuring arrangement for measuring one or more pressures and/or temperatures in an injection-molding system includes a base plate and at least one mould insert with at least part of a cavity. The base plate and the mould insert rest against one another in a releasable manner on at least one common separating surface. The mould insert includes at least one sensor for detecting pressures and/or temperatures as well as a transmitter module on the separating surface, which transmitter module is electrically connected to the sensor. The base plate includes a receiving module on the separating surface opposite the transmitter module, wherein measurement data can be transmitted from the transmitter module to the receiving module. The transmitter module and the receiving module on the separating surface are essentially planar and can be separated without force | 09-30-2010 |
20100132528 | TOOL CONDITION MONITORING SYSTEM - The invention relates to a tool comprising a tool element which rotates in operation with at least one geometrically defined blade, in particular a material cutting tool element, said tool element being subject to an operating parameter in the operating condition. A measuring device is provided for determination and conversion of the operation parameter into a measured signal. A first measuring device cooperates with a first tool element in the operating condition such that essentially only a first operating parameter for the first tool element may be recorded by the first measuring device | 06-03-2010 |
20100065013 | ADAPTER FOR PRESSURE SENSORS - The invention relates to an adapter for pressure sensors for monitoring long-term cylinder pressures in internal combustion engines, said adapter comprising a housing | 03-18-2010 |
20100064785 | OPTICAL PRESSURE SENSOR HAVING AT LEAST TWO OPTICAL FIBERS - The invention relates to an optical pressure sensor based on light intensity measurements and comprises at least one membrane and two parallel optical fibers. At lest one first fiber has a fiber end and a light emission surface for emitting light in the direction of the membrane. At least one second fiber has a fiber end having a light admission surface for receiving the light reflected from the membrane and transmitting that reflected light. The light emission surface and the light admission surface of the two fibers are disposed facing away from each other. This changes the optical path of the light during use such that the light portion received by the at least one second fiber is very sensitive to the position of the membrane. | 03-18-2010 |
20100062095 | COUPLING FOR A PLASTICS INJECTION MOLDING MACHINE - A coupling for a plastics injection molding machine which connects a drive shaft to a screw comprises at least one force sensor with a measuring element for the indirect determination of the nozzle pressure. The coupling comprises a first connection which has torsional strength and does not transfer axial force. The coupling comprises a second connection, which is mechanically uncoupled from the first connection and is compression proof and does not transfer torque between the drive shaft and the feed screw. The measuring element is arranged in the force path A of the second compression proof connection but is not also in the force path T of the first connection. Thus, during operation, measurements in the measuring element are not falsified by torsional forces. | 03-11-2010 |
20100050775 | PRESSURE SENSOR FOR MEASUREMENTS IN HOT, DYNAMIC PROCESSES - The invention relates to a pressure sensor for measurements in hot, dynamic processes. The pressure sensor comprises a cylindrical housing in which a measuring element is located, and a round or annular membrane having at least one outer support. The outer support is arranged on the housing, offset behind a housing extension. The measuring element is adapted to acquire measurement data as a result of an axial displacement of the membrane. The housing extension is provided with a heat shield which is arranged, except on its edges, interspaced behind a gap. | 03-04-2010 |
20100018494 | SENSOR UNIT - A sensor unit for measuring a measurement variable in a medium, in particular in an aggressive liquid or gaseous medium, comprises a sensor that is arranged in a sensor capsule and has a sensor region that is arranged on a base body. In order to detect the measurement variable in the sensor region, a measurement opening is provided in the sensor capsule. On a side facing the measurement opening, the sensor region has a measurement surface that is provided with measurement electronics. An electrical supply line is provided on the sensor for the purpose of transmitting a sensor signal that is generated by the measurement electronics. A plated-through hole is provided in the base body. The plated-through hole is used to connect the measurement electronics to the electrical supply line via signals through the base body, on a base side of the sensor that faces away from the measurement opening. | 01-28-2010 |
20100005639 | JOINING UNIT - A joining unit contains a spindle drive in the form of a hollow shaft motor that encloses a spindle. The hollow shaft motor serves to achieve a linear movement of a joining tool for the execution of a joining process. The joining unit contains instruments for the presetting and/or determination of the forces exerted and/or the movement of the joining tool during the joining process. | 01-14-2010 |
20090272182 | LOAD CELL - A load cell detects wheel forces and/or moments at tire test stands in the laboratory and on mobile test vehicles based on the piezoelectric measurement principle. The load cell comprises a base plate and a cover plate facing the base plate as well as a plate-shaped quartz sensor, arranged between the plates in a laminar manner. The base plate and cover plate are designed in an elongated shape and include two or more of the plate-shaped quartz sensors there between. The plate-shaped quartz sensors are arranged in an array with respect to the longitudinal orientation of the plates and are preloaded by the plates. | 11-05-2009 |
20090260434 | MEMBRANE PROTECTION FOR A SENSOR HAVING A MEMBRANE, AND SENSOR HAVING A MEMBRANE AND MEMBRANE PROTECTION - The invention describes membrane protections for a sensor having a membrane, which membrane protection does not increase the external diameter of a sensor and can be easily removed from a hole in which the sensor is installed. The membrane protection can be fastened to an inner surface of a front region of a sensor using a clip system and thus forms a unit with the sensor. The membrane protection for a sensor which can be screwed into a hole of an installation part and is provided with a membrane in the front region. The membrane protection has a clip system in order to be internally fastened in the front region of such a sensor. The sensor has a membrane protection which is internally fitted to the front region of the sensor using a clip system. | 10-22-2009 |
20090235762 | TRANSVERSE FORCE MEASUREMENT - A piezoelectric sensor for bending moment measurements has measuring elements separating at their axes and electrically connecting both halves with their opposing directions of polarization. Such a sensor, mounted with its axis on the neutral bending axis of a machine structure, thus measures concurrently both tension and compression of the machine on both sides of the axis thereof. | 09-24-2009 |
20090217768 | PIEZOELECTRIC MEASURING ELEMENT WITH TRANSVERSE EFFECT AND SENSOR COMPRISING SUCH A MEASURING ELEMENT - A piezoelectric measuring element comprises at least one bar with transverse effect which can be used with two conductor technology. Poles comprising the metallisations, electrodes and lines in the measuring element are embodied with one or more piezoelectric bars with transverse effect such that the electric capacitances thereof with respect to the housing are identical. There can be a completely symmetrical design of the poles. A capacitor from one pole to the housing can correspond to the difference in capacitance of both poles to the environment. | 09-03-2009 |
20090145238 | STRAIN GAUGE - A strain gauge measures elongation and compression at a surface of a component. The strain gauge comprise a housing having a fixation configured to attach the strain gauge to the surface to be measured, a connector for contacting a measuring cable, at least two support surfaces at the housing for securely bearing on the surface to be measured. At least one of the support surfaces is provided with a transduction element and with a measuring element for measuring shearing forces. The measuring element is connected by means of an internally disposed cable to the connector and to a module that comprises that at least one support surface provided with the measuring element pre-assembled together with the transduction element. | 06-11-2009 |
20090026889 | 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 electrodes that lie on either side of the measuring element. The electrodes have contact points for contacting conductors. The component comprises in addition a respective transmission body or several transmission bodies that are located outside the electrodes, on either side of the latter. The measuring element, electrodes and transmission bodies are held together mechanically by an external, electrically insulating film. | 01-29-2009 |
20080264173 | Sensor Unit - The invention relates to a sensor unit for measuring a measurable variable, especially in an aggressive medium. Said sensor unit comprises a sensor which is disposed in a sensor casing and is provided with a sensor zone located on a base. In order to detect the measurable variable in the sensor zone, a measuring hole which allows the medium to advance directly to the sensor zone is provided in the sensor casing. A side of the sensor zone that faces away from the measuring hole is equipped with a measuring surface which encompasses measuring electronics. An electrical feeder is provided on the sensor in order to transmit a sensor signal generated by the measuring electronics. The sensor is sealingly arranged on a sealing surface located on the sensor casing in such a way that the measuring surface is isolated from the medium. A mechanism is provided by means of a which the sensor can be disconnected from thermally and/or mechanically induced changes in the sensor casing. There also is a probe comprising a sensor unit, as well as an internal combustion engine, a hydraulic or pneumatic tool, and an air conditioner encompassing a sensor unit. | 10-30-2008 |
20080245149 | Sensor - An acceleration sensor for measuring an acceleration comprises a housing including a measuring-plate, which has a first surface. The measuring plate has a second surface in parallel with and opposite to the first surface. A post is bonded via a post-bonding-face to the first surface. A temperature-compensating-element for compensating a temperature-effect caused by a temperature acting on the measuring-plate, is bonded via an element-bonding-face to the second surface of the measuring-plate. In addition, a sensor as described above is in a measuring device. | 10-09-2008 |
20080204265 | Measuring Arrangement - A measuring arrangement for assembly on or in a tool, in particular, in an injection moulding tool, comprising two or more sensors for the simultaneous measurement of measured parameters, each sensor generating a measurement signal in the operating state, at least two measurement signals being of different types from each other. The measuring arrangement comprises a signal converter with an output interface, all measured signals being converted into the same type of output signal in the signal converter. Said output signals can be transmitted through the output interface by means of a detachable signal line to an analytical unit. | 08-28-2008 |
20080203854 | Ground Insulated Piezoelectric Sensor for the Measurement of Acceleration of Pressure - The invention describes a sensor comprising an element package | 08-28-2008 |