Repositioning In Response To Deflection Under Load Patents (Class 177/212)
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Patent number: 11366005Abstract: A weighing sensor and a lever are disclosed. The weighing sensor has a load-receiving portion, a fixing portion, and a parallel guiding portion connected to the load-receiving portion and the fixing portion. The parallel guiding portion has upper and lower parallel guiding units, separated from each other. The ends of the parallel guiding units are connected to the load-receiving portion and the fixing portion. The fixing portion has an extension located between the parallel guiding units. The extension is at a distance from both parallel guiding units and extends to the load-receiving portion. A gap is formed between the extension and the load-receiving portion; and the distance between the extension and the upper parallel guiding unit allows a lever to pass through. The weighing sensor has a simple structure, both the processing process and the assembly process are simplified, and the processing and assembly during production are facilitated.Type: GrantFiled: November 30, 2018Date of Patent: June 21, 2022Assignees: Mettler Toledo Instrument (Shanghai) Company Limited, Mettler-Toledo International Trading (Shanghai) Co., Ltd.Inventors: Chao Wu, Baohui Liu, Weixiang Sun, Chun Yang, Naifeng Bian, Feng Xu
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Patent number: 11266271Abstract: A blender system that includes a base that is selectively and operatively engaged with a container is shown and described herein. The blender system may include a container. The container may include a magnet and may be engagable with a blade base. The blade base may include a switch that responds to the magnet. The blender system may include a shield that shields the magnet and switch from a magnetic field generated by operation of a motor.Type: GrantFiled: December 8, 2017Date of Patent: March 8, 2022Assignee: Vita-Mix Management CorporationInventors: Brenton Krivos, David Kolar, Eric Miller, Saifur Tareen
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Patent number: 11231314Abstract: A calibration weight assembly (100, 200, 300, 400, 500) has at least one calibration weight (150, 550, 750) and a transfer mechanism, and is used with a gravimetric force-measuring device (110, 210, 310, 410, 510) having a fixed region (111, 211, 311, 411, 511), a load-receiving region (112, 212, 312, 412, 512), and a measuring sensor (140, 540). The transfer mechanism has at least one poly-stable positioning element (561, 571), a first stable state of which defines a calibration position (KP) and a second stable state of which defines a resting position (RP) of the transfer mechanism. The at least one calibration weight can be coupled with the load-receiving region. The transfer mechanism, as actuated by the measuring sensor, transfers the at least one calibration weight from the calibration position to the resting position, or vice versa.Type: GrantFiled: December 10, 2019Date of Patent: January 25, 2022Assignee: Mettler-Toledo GmbHInventors: Hans-Rudolf Burkhard, David Koller, Andreas Metzger, George Fankhauser
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Patent number: 11221250Abstract: An electromagnetic force-compensation direct measuring system (100) has a load receiver (101), which is connected to a force-compensation device (120) via a power-transmission linkage. The system has a multipart parallel guide mechanism, which has at least two parallel-guiding members (131, 132) spaced apart by the power-transmission linkage. The force-compensation device has at least one permanent magnet (121) and a coil (122) electrically connected to a controllable electrical circuit. At least one parallel-guiding member is electrically integrated in the controllable electrical circuit. The power-transmission linkage is designed as a single-part coil body (110) such that the coil is arranged on the coil body between the parallel-guiding members and is electrically connected to the controllable electrical circuit.Type: GrantFiled: February 25, 2020Date of Patent: January 11, 2022Assignee: Mettler-Toledo GmbHInventors: Daniel Reber, Adrian Birrer, Christoph Lang
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Patent number: 10281319Abstract: A dosing device with a balance, which includes a weighing chamber (16); a processor (32); a climate module (34), which is disposed in the weighing chamber (16); a data transmission path, over which data is exchanged between the climate module (34) and the processor (32); and a mixing formulation display (30). Also disclosed are a climate module configured to electrically couple to a dosing device in a detachable manner, wherein the climate module (34) forms a self-contained modular unit and includes various sensors (52, 54, 62) and a path over which data is transmitted to a processor external to the climate module, and a method for mixing a formulation, using a dosing device, wherein ambient conditions are detected during dosage of the substances to be combined, and the mixing ratio is adjusted in accordance with the detected ambient conditions.Type: GrantFiled: May 9, 2016Date of Patent: May 7, 2019Assignee: SARTORIUS LAB INSTRUMENTS GMBH & CO. KGInventors: Reinhard Baumfalk, Rainer Kirchhoff, Jean-Claude Bertoldi
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Patent number: 10240968Abstract: A differential measurement circuit (1) is implemented in a balance with electromagnetic force compensation. The circuit receives input from two photo currents (I1, I2) generated by photodiodes (D1, D2) and generates an output signal proportional to their difference. A switch (SW) controls the flow of current through a node (K?) to which the two photo currents are directed, by flipping between two states (zt1, zt2) within two phases (t1, t2) of a time period T. The switch is controlled so a reference current (IRef) from a voltage or current source (URef) is superimposed alternatingly within the time phases on one of the two photo currents which continuously flow into the node. The node lies at the input of an integrator (INT) whose integrator signal (sINT) can be compared in a comparator (CMP) to a cyclically recurring ramp signal (sRAMP) which conforms to the time period.Type: GrantFiled: February 16, 2017Date of Patent: March 26, 2019Assignee: Mettler-Toledo GmbHInventors: David Koller, Cyrill Bucher, Christoph Trautweiler
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Patent number: 10207866Abstract: A system is disclosed for monitoring waste collected by a service vehicle. The system may include a sensor configured to generate an acceleration signal indicative of an acceleration of the service vehicle, an output device, and a controller in communication with the sensor and the output device. The controller may be configured to receive the acceleration signal from the sensor after collection of the waste from a service stop. The controller may be further configured to determine an amount of the waste collected by the service vehicle from the service stop based on the acceleration signal, and to relay the amount of the waste to the output device.Type: GrantFiled: March 22, 2018Date of Patent: February 19, 2019Assignee: RUBICON GLOBAL HOLDINGS, LLCInventor: Hunter Dane Dunbar
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Patent number: 10156470Abstract: A parallel-guiding mechanism in accordance with the present invention comprises a load-receiving portion for receiving a load of a to be weighed object; a fixing portion including an end portion, an extending portion extending forwardly from the end portion and mounting portions extending forwardly from the extending portion, and parallel-guiding members connecting the load-receiving portion to the fixing portion. The mounting portions include a first mounting portion and a second mounting portion. A receiving space is formed between the first mounting portion, the second mounting portion and the extending portion for receiving at least a portion of the load-receiving portion. A containing space for receiving the extending portion is formed between the parallel-guiding members, the load-receiving portion and the end portion. The parallel-guiding members include an upper parallel-guiding member and a lower parallel-guiding member.Type: GrantFiled: May 23, 2016Date of Patent: December 18, 2018Assignee: Mettler-Toledo GmbHInventors: Chun Yang, Chao Wu, Feng Xu, Weixiang Sun, Naifeng Bian, Hans-Rudolf Burkhard
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Patent number: 9927284Abstract: A monolithic weighing system including a base (12), a load holder (26), which is articulated on the base (12) through a parallel link arrangement (16, 20), and a lever (28), which is articulated on the load holder (26) and which has an attachment point for a force compensating arrangement and a target area (32) for an optical position sensor (34). The target area (32) has a slotted diaphragm (36) in a thin walled lever section of the lever (28) in the deflection plane thereof. A position sensor pedestal (38a, b), which is integrally connected to the base (12), is arranged laterally adjacent to the target area (32). The position sensor pedestal has a pedestal aperture (40a, b), which extends perpendicularly to the deflection plane. The slotted diaphragm (36) of the target area (32) is laser-machined through the pedestal aperture (40a, b).Type: GrantFiled: October 16, 2015Date of Patent: March 27, 2018Assignee: Sartorius Lab Instruments GmbH & Co. KGInventor: Winfried Graf
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Patent number: 9400079Abstract: An automatic balancing structure of a medical balancing stand includes an elastic member arranged in each clearance C. In a normal state, a lever and a turn plate turn together through the elastic members, to follow a rotative movement of a lateral arm. When an imbalance occurs on the lateral arm, the lateral arm produces torque with which a contact part of the lever presses and deforms one of the elastic members to activate a corresponding one of switches S1 and S2. The activated switch outputs an imbalance detected signal to an adjustment unit, which resolves the imbalance. The switches S1 and S2 are simple to downsize the automatic balancing structure and are effective to carry out balance adjustment.Type: GrantFiled: November 29, 2013Date of Patent: July 26, 2016Assignee: MITAKA KOHKI CO., LTD.Inventors: Masao Doi, Toshio Yamazaki
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Patent number: 9316708Abstract: A patient support apparatus for a medical imaging apparatus, such as a magnetic resonance apparatus, is proposed. The patient support apparatus has a couch, a lifting unit for vertical movement of the couch, a travel unit, and at least one sensor unit to detect at least one weight variable for determining the weight of a patient. The at least one sensor unit has at least one sensor element, which is disposed on the lifting unit and/or on the travel unit.Type: GrantFiled: July 3, 2012Date of Patent: April 19, 2016Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Ludwig Eberler, Razvan Lazar, Volker Matschl, Jürgen Nistler, Wolfgang Renz
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Patent number: 9299533Abstract: A multi charged particle beam writing apparatus according to one aspect of the present invention includes a plurality of first blankers to respectively perform blanking deflection of a corresponding beam in multiple beams having passed through the plurality of openings of the aperture member, a plurality of second blankers to deflect a defective beam in the multiple beams having passed through the plurality of openings of the aperture member to be in a direction orthogonal to a deflection direction of the plurality of first blankers, a blanking aperture member to block each of beams which were deflected to be in a beam off state by at least one of the plurality of first blankers and the plurality of second blankers, and a detection processing unit to detect a defective beam in the multiple beams having passed through the plurality of openings of the aperture member.Type: GrantFiled: February 19, 2013Date of Patent: March 29, 2016Assignee: NuFlare Technology, Inc.Inventor: Hiroshi Matsumoto
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Patent number: 8766113Abstract: A sensor mechanism body having a main Roberval mechanism; a sub-Roberval mechanism provided with a second fixed column connected with an electronic balance base, a second movable column supporting the load of an internal weight placed on an engaging section, and two second beams, parallel to each other, and connecting the second movable column to the second fixed column. A first lever rockably supported by a first fulcrum, connected to one end of a first movable column of the main Roberval mechanism, and the other end connected to a second lever. The second lever rockably supported by a second fulcrum, connected to one end of a second movable column of the sub-Roberval mechanism, and the other end connected to an electromagnetic force generating device and the other end of the first lever. The second fixed column is connected to the second lever through a thin-walled connecting.Type: GrantFiled: February 10, 2009Date of Patent: July 1, 2014Assignee: Shimadzu CorporationInventors: Tetsuro Kusumoto, Toshihiro Koide
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Patent number: 8581121Abstract: The disclosed embodiments describe force-transmitting devices for use in gravimetric measuring instruments. The force-transmitting devices scale the force from a calibration weight to facilitate calibration and weighing. The devices comprise unidirectional coupling elements. The unidirectional coupling element comprises coupling element parts. The elements may be adapted to transmit only a tensile force or only a compressive force to a measurement transducer. Adapting the unidirectional coupling element to transmit one type of force or the other may be done by selecting an appropriate arrangement of coupling element parts. The coupling element parts are adapted to transmit force along a midline axis by either a projection and v-shaped groove coupling or projections on the first part mated with surfaces on the second part adapted to receive and guide the first part.Type: GrantFiled: December 16, 2010Date of Patent: November 12, 2013Assignee: Mettler-Toledo AGInventors: Hans-Rudolf Burkhard, Ferdinand Schneider, Dominique Genoud
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Patent number: 8383965Abstract: A top-pan balance having a pan, a weighing system, and an overload safety mechanism. The load cell (4) of the weighing system is connected to fixed points (1) on a housing of the weighing system by an upper connecting rod (2) and a lower connecting rod (3) as a parallel guide so as to be movable in the vertical direction. The pan is attached to a pan support (8/9) for securing against overload, the support being connected to the load cell through an auxiliary parallel guide (15/16) and through a biased spring element (17/18), whereby the pan is quasi rigidly coupled to the load cell in the permissible weighing range, but is only resiliently coupled to the load cell when the permissible weighing range is exceeded. At least one limit stop is fixed to the housing and limits the elastic deflection of the pan and the pan support in case of overload.Type: GrantFiled: May 16, 2011Date of Patent: February 26, 2013Assignee: Sartorius Weighing Technology GmbHInventors: Detlev Erben, Helga Covic, Jochen Doerner
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Patent number: 8309867Abstract: A force-measuring device 1, particularly a balance, operates on the principle of electromagnetic force-compensation. An electric coil 53 is arranged to be movable in a magnet system 50. The coil has at least two windings W1, W2 and a current supply device PB having at least two partial current sources PB1, PB2, the current sources each assigned to a corresponding winding. A device CU controls and/or regulates the current supplied to the windings by the partial current sources in such a way that, dependent on a force L acting on the force-measuring device, a current I1, I2 is sent through each of the windings. The sum of the at least two electromagnetic forces which are thereby generated forms the compensation force, while, at the same time, the power dissipated by the coil always takes on a given predetermined value Ptg.Type: GrantFiled: May 18, 2010Date of Patent: November 13, 2012Assignee: Mettler-Toledo AGInventors: Stephan Baltisberger, Thomas Köppel
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Patent number: 8232484Abstract: The above described preferred embodiments are intended to illustrate the principles of the invention, but not to limit the scope of the invention. Various other embodiments and modifications to these preferred embodiments may be made by those skilled in the art without departing from the scope of the present invention.Type: GrantFiled: January 19, 2007Date of Patent: July 31, 2012Assignee: Wipotec Wiege-und Positioniersysteme GmbHInventor: Timo Hauck
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Patent number: 8158896Abstract: A weighing sensor according to the principle of electromagnetic force compensation, wherein a stop is provided on the load receiver for a lever or a component carried by it.Type: GrantFiled: January 19, 2007Date of Patent: April 17, 2012Assignee: Wipotec Wiege-und Positioniersysteme GmbHInventor: Timo Hauck
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Patent number: 8044308Abstract: An electronic balance is provided where precise correction can be carried out by using incorporated weight and the weight and the size can both be reduced.Type: GrantFiled: July 5, 2007Date of Patent: October 25, 2011Assignee: Shimadzu CorporationInventor: Tetsuro Kusumoto
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Patent number: 7989714Abstract: A scale can include a low capacity sensing mechanism operatively coupled to a load, wherein the low capacity sensing mechanism may detect movement of the load. A transfer mechanism can be operatively coupled to the low capacity sensing mechanism, wherein the low capacity sensing mechanism may enable the scale to weigh both relatively heavy loads and relatively light loads to a minor division resolution associated with the low capacity sensing mechanism.Type: GrantFiled: August 8, 2008Date of Patent: August 2, 2011Assignee: Neopost TechnologiesInventor: Roman Kresina
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Patent number: 7939770Abstract: An integral type second lever constituting member (A) is mounted on a constitution, in which a first lever member (5) is assembled in a Roberval's mechanism composed of a stationary block (1), a floating frame (2) and upper and lower sub-levers (3, 4). The integral type second lever constituting member (A) is mounted by mounting a force point portion (9) and a fulcrum portion (8) on the Roberval's mechanism through screw-fastened holes (8a, 9a), thereby to assemble a load measuring mechanism as a whole. At the screw-fastening time, the turning torque of the screw is supported by a connecting portion (10), and this connecting portion (10) is removed after the integral type second lever constituting member (A) was mounted. In the load measuring mechanism of an electronic balance, the second lever member can be mounted easily and reliably.Type: GrantFiled: April 27, 2007Date of Patent: May 10, 2011Assignee: A & D Company, LimitedInventors: Naoto Izumo, Satoshi Suzaki
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Patent number: 7906737Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19) and an inclinometer (40). The inclinometer derives a signal for the tilt of the scale from the difference of at least two signals. The digital signal processing unit (18) is provided with an additional circuit component or program routine that adds the two signals and, by way of this cumulative signal, corrects the vibration-distorted signal of the measuring sensor (1 . . . 16). A plurality of inclinometers enables the simultaneous detection of momentary gravitational acceleration. For example, in an electric bubble level, the gas bubble moves out of place when tilted and the diameter of the gas bubble changes when the gravitational acceleration changes. The scale thus provides an additional signal for correcting the influence of disturbances with minimum complexity.Type: GrantFiled: June 12, 2009Date of Patent: March 15, 2011Assignee: Sartorius AGInventors: Gerd Freydank, Winfried Graf, Christian Oldendorf
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Patent number: 7851713Abstract: A parallel-guiding mechanism has a vertically movable parallel leg that carries a weighing pan. The movable parallel leg is connected by two essentially horizontal parallel guides to a stationary parallel leg installed in a balance, wherein elastic flexure pivots are formed at the ends of the parallel guides. Incisions that reduce the material strength of the parallel leg in at least one appropriate location define at least one adjustment domain, thus forming a deformation zone which is plastically deformed through application of an adjustment force. In this manner, a corner load error of the parallel-guiding mechanism is corrected.Type: GrantFiled: November 3, 2009Date of Patent: December 14, 2010Assignee: Mettler-Toledo AGInventors: Hans-Rudolf Burkhard, Dominique Genoud, Andreas Metzger, Stephan Baltisberger, Thomas Köppel
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Patent number: 7838783Abstract: A lever mechanism, particularly for a scale receiver of a scale that works on the principle of electromagnetic force compensation includes at least one lever which is connected to a stationary base body or an element connected to the base body. The at least one lever arm is connected to the base body or the element connected to the base body via an elastically deformable articulation which defines a swivel axis of the at least one lever. A load force (FL), which corresponds to the weight force (FG) or is derived therefrom, acts on a first lever arm of the at least one lever and generates on a second lever arm of the at least one lever a reaction three (FR). The elastically deformable articulation comprises two thin, elastically deformable bending areas, which connect the lever to the base body or to the element connected to the base body.Type: GrantFiled: September 8, 2006Date of Patent: November 23, 2010Assignee: Wipotec Wiege-und Positioniersysteme GmbHInventor: Timo Hauck
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Patent number: 7829802Abstract: In a parallel-guiding mechanism, a stationary parallel leg surrounds a movable parallel leg. The movable parallel leg is connected to the stationary parallel leg and guided in vertical movement by first and second parallel-guiding elements, fastened respectively to the upper and lower end portions. The movable parallel leg can be connected to a load receiver and to a force-measuring cell through a force-transmitting connection in order to transmit the weighing load. Intermediate to, and connecting, the respective end portions is a tilt-adjustment feature, by which the end portions are tilt-adjusted relative to each other about at least one tilt axis to correct a corner load error. The tilt-adjustment feature is provided by at least one of: a pair of bending zones, a spherical joint and a ring-shaped constriction.Type: GrantFiled: November 3, 2009Date of Patent: November 9, 2010Assignee: Mettler-Toledo AGInventors: Hans-Rudolf Burkhard, Dominique Genoud, Andreas Metzger, Stephan Baltisberger, Thomas Köppel
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Patent number: 7619170Abstract: An electromagnetic force-compensation direct-measuring system is disclosed. Referred to as direct-measuring system, it comprises a parallel-guiding mechanism; and a load receiver connected with the parallel-guiding mechanism and connected to a force-compensation device by a force-transmitting rod. The force-compensation device can include at least one permanent magnet and a coil that is electrically connected to a control circuit. At least one component of the parallel-guiding mechanism is configured to transmit electric signals.Type: GrantFiled: November 13, 2007Date of Patent: November 17, 2009Assignee: Mettler-Toledo AGInventors: Hans-Rudolf Burkhard, Markus Bendler
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Patent number: 7569779Abstract: A scale can include a low capacity sensing mechanism operatively coupled to a load, wherein the low capacity sensing mechanism may detect movement of the load. A transfer mechanism can be operatively coupled to the low capacity sensing mechanism, wherein the low capacity sensing mechanism may enable the scale to weigh both relatively heavy loads and relatively light loads to a minor division resolution associated with the low capacity sensing mechanism.Type: GrantFiled: October 5, 2007Date of Patent: August 4, 2009Assignee: Neopost TechnologiesInventor: Roman Kresina
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Patent number: 7534971Abstract: A weighing system having a base region (1), a parallel-guided load receiver (4), at least one transmission lever (2) that is pivotably mounted on the base region via at least one flexural pivot (3), and a coupling element (7) that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (3), at least one part of the transmission lever (2), and at least one part of the base region (1?) are monolithically formed from a block. The flexural pivot (3) is separated from the rest of the block by four horizontal parallel bores (31, 32, 33, 34) that are adjacently arranged in an annular manner in such a way as to respectively leave a thin connecting segment (36, 37, 38 39) between adjacent bores, and by additional slots. In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.Type: GrantFiled: August 6, 2007Date of Patent: May 19, 2009Assignee: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer, Friedrich Helmsen, Thomas Fehling
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Patent number: 7501592Abstract: A weighing system that works on the principle of electromagnetic force compensation. The weighing system has two guide members (4?), which connect a load support (5?) to a base region fixed to the housing. The weighing system also has at least one transmission lever (6?), which is mounted on the base region. The base region is divided into two separate subregions (2?, 3?), the transmission lever (6?) extends between these two subregions. Two weighing systems are arranged laterally side by side and their base regions are interconnected in such a way that the two subregions (2, 3) of the base region of the one weighing system are connected to the two subregions (2?, 3?) of the base region of the other weighing system such that their positions are fixed relative to each other.Type: GrantFiled: October 23, 2006Date of Patent: March 10, 2009Assignee: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer
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Patent number: 7495186Abstract: A weighing system having a base region (1), a parallel-guided load receiver (4), at least one transmission lever (2) that is pivotably mounted on the base region via at least one flexural pivot (3), and a coupling element (7) that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (3), at least one part of the transmission lever (2), and at least one part of the base region (1?) are monolithically formed from a block. The flexural pivot (3) is separated from the rest of the block, and at least one spring connecting segment (36/35/38, 37/35?/39) of the flexural pivot (3) includes two spaced-apart thin material points (36, 38; 37, 39). In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.Type: GrantFiled: August 6, 2007Date of Patent: February 24, 2009Assignee: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer, Friedrich Helmsen, Thomas Fehling
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Patent number: 7478551Abstract: A calibration weight 100 for a gravimetric measuring instrument includes a calibration weight base module 101 which is equipped with at least one attachment area 106. The calibration weight 100 further has at least one positioning means 104 and at least one transfer element 105. The attachment area 106 allows supplemental weights 102 to be built onto the calibration weight base module 101; the positioning means 104 serves to position the calibration weight 100 in relation to the calibration weight arm 20; and the transfer element 105 serves as the place through which the transfer mechanism lever 31 applies its force and effects a transfer.Type: GrantFiled: January 13, 2006Date of Patent: January 20, 2009Assignee: Mettler-Toledo AGInventors: Jean-Maurice Tellenbach, Urs Loher, Richard Bruderer
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Publication number: 20080314651Abstract: The invention relates to a weighing device with several weighing cells (3) which are mechanically rigidly interconnected, and which in each case have a load sensor (7) that has a predetermined load insertion direction and can be acted on by a load, with at least one acceleration sensor (9) for the detection of at least one acceleration disturbance and with at least one evaluating unit to which the weight signals generated by the weighing cells (3) and the disturbance signals generated by the acceleration sensors (9) can be transmitted.Type: ApplicationFiled: April 10, 2006Publication date: December 25, 2008Inventors: Jan Gottfriedsen, Patrick Urschel
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Patent number: 7429705Abstract: An exemplary weighing module is disclosed which has a load receiver and a weighing cell that are connected to each other by a force-transmitting rod, wherein the weighing module is arranged inside a design space whose dimensions in a plane extending orthogonal to the load direction are limited by the design spaces occupied by neighboring weighing cells or represent the largest dimension of the weighing cell in said plane. An exemplary weighing cell has a parallel-guiding mechanism in which at least one movable parallel leg which is connected to the force-transmitting rod and at least one stationary parallel leg are arranged with a predefined guiding distance from each other, connected to each other by at least one upper parallel-guiding member and at least one lower parallel-guiding member. The effective length of the parallel-guiding members is larger than the guiding distance, and the movable parallel leg does not protrude out of the design space.Type: GrantFiled: May 26, 2006Date of Patent: September 30, 2008Assignee: Mettler-Toledo AGInventors: Dominique Genoud, Hans-Rudolf Burkhard, Jean-Christophe Emery
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Patent number: 7411138Abstract: A weighing system that operates according to the principle of electromagnetic force compensation, having two connecting rods (2, 3) which are fashioned as a parallel guide and connect a load receiver (4) to a base area (1) fixed to the housing, and having an angle lever (5) mounted on the base area. The force due to weight that is transmitted by the load receiver acts upon the short lever arm (5?) of the angle lever via a coupling element, and a coil projecting into the air gap of a permanent magnet system (7) is fastened to the long lever arm (5?). The weighing system occupies only a small area since the long lever arm takes the form of a vertical lever arm and extends, at least in part, in the area underneath the connecting rods of the parallel guide. The permanent magnet system is likewise arranged underneath the connecting rods of the parallel guide.Type: GrantFiled: January 29, 2007Date of Patent: August 12, 2008Assignee: Sartorius AGInventors: Fabian Walter, Otto Kuhlmann, Peter Fleischer, Wilfried Langner
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Patent number: 7365276Abstract: In a force-transmitting device of a force-measuring cell with a parallel-guiding mechanism in which a stationary parallelogram leg and a movably guided parallelogram leg are connected to each other by parallelogram guides, at least one of the parallelogram legs has a fastening part with at least two fastening portions. Each fastening portion has a fastening pad with a tapped hole normal to the fastening pad surface, for fastening the device to a housing or a load carrier. The parallelogram leg has slot-shaped incisions that serve to uncouple the fastening portions from the rest of the parallelogram leg, so as to prevent the propagation of assembly stresses from the fastening portions into the working parts of the force-measuring cell.Type: GrantFiled: May 16, 2007Date of Patent: April 29, 2008Assignee: Mettler-Toledo AGInventor: Hans-Rudolf Burkhard
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Patent number: 7345249Abstract: In a force-transmitting mechanism (1, 101) with a parallel-guiding mechanism having a stationary (2) and a movable (4) parallelogram leg (2), with a lever mechanism having at least one lever (6), and with at least one coupling element (5, 105) that introduces a force into the lever mechanism or transfers the force within the lever mechanism, wherein the coupling element is stiff in its lengthwise direction but bends elastically. The coupling element has at least one first flexure joint (8) with a thin material connection and it is movable in the parallelogram plane. The lever mechanism and each coupling element (5, 105) are integral parts of a material block. Each coupling element (5, 105) also has at least two second flexure joints (16, 116) with thin material connections whose flexibility is in the direction transverse to the bending of the first flexure joint (8).Type: GrantFiled: September 28, 2005Date of Patent: March 18, 2008Assignee: Mettler-Toledo AGInventors: Hans-Rudolph Burkhard, Ernst Tschopp, Andreas Metzger
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Patent number: 7339122Abstract: A device to weigh objects of like nature has at least a first weighing module and a second weighing module. Each weighing module includes a load receiver and a weighing cell connected to each other through a force-transmitting rod. Each weighing cell is arranged in a design space whose dimensions in a plane that extends orthogonal to the direction of the load is delimited by the design spaces of adjacent weighing cells.Type: GrantFiled: March 10, 2006Date of Patent: March 4, 2008Assignee: Mettler-Toledo AGInventor: Hans-Rudolf Burkhard
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Patent number: 7317167Abstract: A weighing module 1 has a force-transmitting linkage 13 arranged between the load-receiving portion 3 of the weighing cell 2 and the load receiver 5, with an overload protection device that precisely maintains its position being an integral part of the force-transmitting linkage 13. By means of a positioning element 7, 107, 207, the load receiver 5 is positioned without play relative to the load-receiving portion 3 in the plane that extends orthogonal to the load direction, and the load receiver 5 is also guided in the load direction without play. When forces in excess of the pre-tension force of the elastic element 8 act on the load receiver 5, the latter has the capability of being displaced in the load direction and to tip in all directions that are orthogonal to the load direction. The housing part 18 serves to delimit at least the range of linear downward deflection as well the tipping movement of the load receiver 5 when the load receiver 5 is exposed to transverse forces and to overloads.Type: GrantFiled: December 8, 2005Date of Patent: January 8, 2008Assignee: Mettler-Toledo AGInventors: Hans-Rudolf Burkhard, Andreas Metzger, Peter Schilling
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Patent number: 7315003Abstract: Electronic weighing devices and method are disclosed wherein balances (particularly of the direct load type) are adapted to utilize less power thus creating less system heat and thereby enhancing weighing accuracy and range of operation. A preferred embodiment of the device includes a frame having an articulating load support structure connected thereto. The support structure carries a coil and movable capacitor plate while the frame locates a permanent magnet and fixed capacitor plate. An elastic offset, such as a spring, is adjustably located between the support structure and the frame to offset, or counterbalance, the support structure, preferably up to about one-half of the balance's rated capacity in any particular embodiment. A push-pull servo system initially causes current in the coil to flow in a direction producing a resultant force which is additive to the pan load. Only when the counterbalancing force is exceeded by the pan load does the coil current produce a force opposing the pan load.Type: GrantFiled: September 13, 2004Date of Patent: January 1, 2008Assignee: Scientech IncorporatedInventor: Frank C. Maring
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Patent number: 7307226Abstract: Two horizontal holes are processed at the end face of a movable pillar of a load measuring cell in a block shape. A power-point spring is formed between the horizontal holes, and the internal side faces of the horizontal holes constitute the internal end faces of supporting-point springs. Further, from above or below the load measuring cell, a vertical hole is processed so that the supporting-point springs are separated by the vertical hole extending in a vertical direction and are formed on both side faces in the longitudinal direction of load measuring cell.Type: GrantFiled: June 7, 2005Date of Patent: December 11, 2007Assignee: Shimadzu CorporationInventor: Atushi Iiduka
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Patent number: 7285737Abstract: A weighing system that works on the principle of electromagnetic force compensation has two guide members (12), which as a parallel guide unit connect a load support (14) to a base region (11) fixed to the housing, and at least one transmission lever (17), which is mounted on the base region. The weighing system is configured such that a permanent magnet system may be wider than the body of the weighing system and configured to provide a recess into which the permanent magnet system(s) (29) of an adjacent weighing system (2) or of adjacent weighing systems can project. The permanent magnet system can thus be twice as wide as the body of the system.Type: GrantFiled: October 23, 2006Date of Patent: October 23, 2007Assignee: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer
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Patent number: 7282655Abstract: An electronic balance of an electromagnetic force balancing type comprises electromagnetic force generators for applying electromagnetic forces for controlling to move a balance beam in a longitudinal direction (X axis) and a horizontal direction (Y axis) orthogonal thereto, PID controllers for controlling the electromagnetic force generators by a PID control, and a three axes directions position detector for detecting displacements in three directions of X, Y axes directions of the balance beam and a gravitational force direction.Type: GrantFiled: October 14, 2005Date of Patent: October 16, 2007Assignee: Shimadzu CorporationInventors: Tsuyoshi Satoh, Kimitoshi Tamura, Kunio Shimauchi
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Patent number: 7227089Abstract: In electronic balance, an analog computation portion determines at least a differential control signal according to an amount of displacement of a beam. A digital computation portion determines at least an integral control signal is determined by after the amount of displacement of the beam is digital-converted. The control signal component determined by the digital computation portion is analog-converted. Thereafter, a synthetic PID control signal is determined by being synthesized from a resultant signal and the control signal component, which is determined by the analog computation portion. Subsequently, a coil current based on the synthetic PID control signal is passed through the coil. A weight value is obtained according to the control signal component determined by the digital computation portion.Type: GrantFiled: January 13, 2005Date of Patent: June 5, 2007Assignee: Shimadzu CorporationInventors: Kunio Shimauchi, Hiroshi Hamamoto, Kimitoshi Tamura
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Patent number: 7220924Abstract: In a force-transmitting device of a force-measuring cell with a parallel-guiding mechanism in which a stationary parallelogram leg and a movably guided parallelogram leg are connected to each other by parallelogram guides, each of the parallelogram legs has a fastening part with at least two fastening portions. The fastening portions have fastening pads with tapped holes running perpendicular to the fastening pad surfaces, so that a load carrier can be bolted to the force-transmitting device and/or the device can be fastened to a housing. The parallelogram legs have slot-shaped incisions that serve to uncouple the fastening portions from the rest of the parallelogram leg, so as to prevent the propagation of assembly stresses from the fastening portions into the working parts of the force-measuring cell.Type: GrantFiled: October 27, 2004Date of Patent: May 22, 2007Assignee: Mettler-Toledo AGInventor: Hans-Rudolf Burkhard
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Patent number: 7084358Abstract: A load, such as an electronic test head, is supported. A force sensor detects a force received from the load, the force resulting from the load being imbalanced such that a torque is created about a rotational axis of the load. A source of force provides a counter force relative to the load in response to the force detected by the force sensor. A method of docking an electronic test head held in a test head manipulator to an electronic device handler is also provided. The method of docking includes measuring a magnitude of an imbalance force along or about at least one of a plruality of motion axes of the test head manipulator; and providing a counter force to the imbalance force.Type: GrantFiled: September 20, 2001Date of Patent: August 1, 2006Assignee: inTEST CorporationInventors: Nil O. Ny, Henri M. Akouka, Alyn R. Holt
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Patent number: 7012198Abstract: A balance includes a weighing cell with a vertically movable load receiver, a weighing pan to receive a weighing load, and a support element to couple the weighing pan to the vertically movable load receiver of the weighing cell. A cantilever arm with a seat for at least one calibration weight is solidly connected to the support element. The balance has a coupling arrangement that constrains the support element with low-friction mobility to the load receiver at three points forming a triangle in a plane that extends orthogonal to the symmetry plane of the weighing cell, wherein the triangle is symmetric to the symmetry plane of the weighing cell. Under the coupling arrangement, the support element is solidly supported on the load receiver in the direction in which the weighing load is acting.Type: GrantFiled: April 2, 2003Date of Patent: March 14, 2006Assignee: Mettler-Toledo GmbHInventors: Beat Lüdi, Eduard Fringeli, Paul Lüchinger
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Patent number: 6903281Abstract: The invention relates to an instrument and method for measuring minute quantities of weight, including a pan for holding a sample to be weighed, a chamber for forming an enclosure about the pan, and a hang-down wire coupled to the pan for suspending the pan within the chamber. The pan has volume less than 0.020 cm3 and the hang-down wire has a volume less than 0.01 cm3. The invention may also include a carrier gas, placed within the chamber, having a generally consistent density over changes in temperature.Type: GrantFiled: November 21, 2002Date of Patent: June 7, 2005Assignee: PerkinElmer Instruments LLCInventors: Avinash Dalmia, E. Joel McCorkle
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Patent number: 6879897Abstract: A method for achieving a constant average deceleration of a vehicle is disclosed. In an exemplary embodiment, the method includes comparing an effective load mass of the vehicle to a baseline load mass. If the effective load mass differs from the baseline load mass by at least a designated percentage, then upon detection of a vehicle impact, energy absorbing structures within the vehicle are adjusted so as to alter crush forces of the vehicle, thereby resulting in a desired average deceleration of the vehicle.Type: GrantFiled: October 19, 2002Date of Patent: April 12, 2005Assignee: General Motors CorporationInventors: Nancy L. Johnson, Alan Lampe Browne
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Patent number: 6861593Abstract: A weighing sensor including a base (1) fixed to a housing, a load sensor (2) connected to the base in a displaceable manner via two arms (3, 4), a lever system (8 . . . 11) having at least one lever and transmitting the load acting on the load sensor to a transducer (12, 13), and a built-in calibration weight (40) which may be lowered onto a support region (30/38) for checking and/or calibrating the sensitivity of the weighing sensor. The support region is guided in a parallel manner by two additional arms (21, 22) and is connected to a lever (9/39) of the lever system (8 . . . 11) via a coupling element (26). Relatively large loads on the weighing sensor may be simulated with relatively small calibration weights, without the need for complicated lifting devices. The two additional arms (21, 22) are connected on the one hand to the support region (30/38) and on the other hand to the load sensor (2) and are located on the side of the load sensor (2) opposite from the lever system (8 . . . 11).Type: GrantFiled: May 5, 2003Date of Patent: March 1, 2005Assignee: Sartorius AktiengesellschaftInventors: Otto Kuhlmann, Thorsten Capelle, Peter Fleischer, Friedrich Helmsen, Detlev Erben, Rudolf Mueller
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Patent number: 6787714Abstract: Protruding part of a mechanism body is connected to a base frame by screws, and other protruding part is connected to an auxiliary connecting metal fittings by the screws. A machining necessary for connecting is conducted on the protruding portions, the widths of which are wide. Therefore, a sufficiently long distance can be obtained by the protruding portions. As a result, the Roberval's parts 4, 5 are not affected by stress strain, which is caused in the process of connecting, even if a size of an electronic balance in a longitudinal direction is not extended. Accordingly, it is possible to realize the compact electronic balance of high performance in which an accurate measurement can be made even if a load is given to a balance pan being biased.Type: GrantFiled: July 29, 2002Date of Patent: September 7, 2004Assignee: Shimadzu CorporationInventor: Atushi Iiduka