Plural Distinct Load Holders With Common Evaluator Patents (Class 177/199)
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Patent number: 7151230Abstract: A system for weighing a load that uses a weighing apparatus comprising a plurality of load cells (1), a means for receiving a load supported by said load cells, a means associated with each load cell (1) to supply a digital representation of the load on each load cell, said load cells being connected together to form a communication network, wherein a digital representation of the load on each load cell (1) is generated, a correction coefficient Xj of said digital representation for each load cell (1) is determined, said correction coefficient Xj is stored in the respective load cell (1) and the gain of each load cell is varied according to its correction coefficient Xj to generate a correct digital representation of the load for each load cell (1).Type: GrantFiled: February 9, 2004Date of Patent: December 19, 2006Assignee: Societa Cooperativa Bilanciai Campogalliano a Responsabilita Limitata of ModenaInventor: Franco Brighenti
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Patent number: 7100439Abstract: The present invention is directed to a weight scale having a balance control system that detects unequal load distribution to the scale's load sensors and produces an output signal that enables the user to re-distribute weight until a predetermined level of balance is achieved. Various load sensors are positioned in an array within the scale and are in communication with a controller that receives signals from the sensors indicative of relative load applied to each. The controller generates a signal that is displayed or emitted to the user indicative of the position of the user's center of gravity relative to the sensors.Type: GrantFiled: December 2, 2002Date of Patent: September 5, 2006Assignee: Conair CorporationInventor: Vito James Carlucci
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Patent number: 7009119Abstract: The present invention is directed to a weight scale having a control system that prompts users for their identity and then displays any one or more of: present weight, past weights, target weights and/or the differences therebetween, as well as a graphical representation of weight vs. time. Another feature of the present invention is the use of a viscoelastic foam pad on the surface of the scale for comfort and sanitary benefits.Type: GrantFiled: December 2, 2003Date of Patent: March 7, 2006Assignee: Conair CorporationInventors: Vito James Carlucci, Paul Joseph Denhup
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Patent number: 6963036Abstract: The static or dynamic weighing apparatus for weighing an object or item, comprising a weighing assembly that includes a base with four (4) load cells attached to it, two (2) active load cells and two (2) passive load cells. Each active load cell has a mounting side and a weighing side. They are mounted to the base and to each other via a rigid weighing platform and are rotated 180° with respect to each other in the horizontal plane, thereby generating respective inverse error signals when an object or item is placed on or passes over the weighing platform. The two (2) passive load cells are mounted in the same manner. A combination of the voltage outputs from each of the respective two (2) load cells pairs negates all horizontally and vertically induced errors thus yielding a highly accurate two (2) times normal weight signal of the object or item being weighed.Type: GrantFiled: November 1, 2002Date of Patent: November 8, 2005Inventor: Heinz Zicher
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Patent number: 6919516Abstract: Load cells forming one or more weighing scales are connected to each other and to a common concentrator which communicates to a master controller in the control house via RF wireless communication. The load cells are polled by and provide weight reading to concentrator to the master controller. A digital load cell is used which includes a rocker pin, guided beam, torsion ring or other counterforce, a circuit board mounted on the counterforce and an enclosure sealing the circuit board and all but the load bearing surfaces of the counterforce and a mounded antenna. The circuit board includes a microcomputer and a transceiver. RF communication is provided with the circuit board through a antenna mounted on the enclosure. One or a number of load cells may be connected to a computer or controller to form one or more weighing scales with one or more weighing scales connect to a control house through wireless RF communication.Type: GrantFiled: January 8, 2002Date of Patent: July 19, 2005Assignee: Mettler-ToledoInventors: Craig Frye, Bruce Eldridge Huitt
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Patent number: 6911607Abstract: The invention relates to a dosing device for mixing additive into a basic flow, comprising: a passage for the basic flow; an inlet for the additive in the passage; a container for the additive connected to the inlet via a dosing mechanism and having a controllable drive for discharge of the additive into the inlet; weighing means for determining the weight of at least the container with the additive; and a control for the drive which is connected to the weighting means for setting a dosed discharge, wherein the dosing mechanism is arranged on the inlet via the weighing means.Type: GrantFiled: June 11, 2001Date of Patent: June 28, 2005Assignee: E.H. Klijn Beheer B.V.Inventor: Erik Hans Klijn
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Patent number: 6875932Abstract: A system and method for measuring the weight of patients in a wheelchair are disclosed, including two portable weight measurement devices, wherein the devices measure the weight imposed on two wheels of a four wheel wheelchair, and a receiver that accepts weight measurement data from the portable weight measurement devices. The weight data exchanged between the two portable weight measurement devices and/or with the receiver may be transported over wireless connections.Type: GrantFiled: September 11, 2002Date of Patent: April 5, 2005Assignee: Millennium Medical Products, Inc.Inventor: Richard H. Tuft
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Publication number: 20040168836Abstract: A weighing scale having a display and processor for determining and identifying the optimal position coordinates for a load placed on the weighing scale includes a platform and a plurality of support assemblies, each containing a load cell for receiving the weight of the load. The display includes a meter or other graphical display that identifies position coordinates along with the determined numerical weight. Individual outputs from each of the plurality (e.g. 4) of load cells are received by a processor configured to compute x,y vector coordinates associated with the weight parameters for each load cell. The determined current or actual load position relative to an optimal position is calculated and displayed along with the weight.Type: ApplicationFiled: November 14, 2003Publication date: September 2, 2004Inventor: Steven Petrucelli
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Patent number: 6765154Abstract: A portable weighing system for a bed comprising a pair of scales placed under the legs or support members of a bed and a weight data collector unit. The scales are positioned directly below the ends of a bed and resting on the floor, and the legs or support members of the bed are then placed on the scales. Each scale is comprised of a beam shaped load cell, support bar, and support bar extensions. The load cell is shaped such that a section of the load cell rests on a horizontally disposed floor engaging base and the ends of the load cell are elevated above the base such that the ends do not rest on the base. The support bar is positioned above said load cell and attached to said load cell by a pair of threaded fasteners. The two support bar extensions are adjustably attached to each end of the support bar such that the width of said scale can be readily adjusted to accommodate beds of varying widths.Type: GrantFiled: December 18, 2001Date of Patent: July 20, 2004Inventor: Louis Sternberg
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Patent number: 6689960Abstract: A seat load measuring apparatus that can provide an accurate load output even when one or more sensors are exerted with a load in excess of its measurable load is provided. In a first instance, the output of each load sensor is read at Step S11. Subsequently, at step S12, whether or not there is any sensor whereof the output is in excess of the predetermined value is determined. If no output of these sensors is in excess of the predetermined value, it is regarded as normal, and the seat weight is obtained by summation of the outputs of the sensors at Step S13. When the output of any sensor exceeds the predetermined value, it is determined that an offset load is exerted thereon and thus the output of the sensor in question cannot be trusted. Therefore, the seat weight obtained immediately before the output of any of the sensors exceeds the predetermined value is regarded as the seat weight.Type: GrantFiled: March 7, 2002Date of Patent: February 10, 2004Assignee: Takata CorporationInventor: Hiroshi Aoki
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Publication number: 20030221875Abstract: The spine scale is a body weighing machine that measures the weight of the different parts of the human body in order to determine the health of the spinal chord. It has four weighing scales, enclosed in a single casing, that are electronically connected to measure the weight of four sections of the human body.Type: ApplicationFiled: June 4, 2002Publication date: December 4, 2003Inventor: Sajid Ali Mirza Khan
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Patent number: 6639156Abstract: A method and device for electronically controlling inventory utilizing multiple modularized integrated load cell weight indicating devices. An inventory monitoring system is provided having a central system controller and one or more modules. Each module includes a master integrated load cell weight indicating device having a microprocessor based controller, a communications controller, a A/D converter, and a weight indicating device. Connected to each master integrated load cell is one or more slave integrated load cell weight indicating devices not utilizing any separate communications controller or microprocessor-based controller. In practice, communications are implemented utilizing a data structure indicating a module address, a individual weight indicating device subaddress and a command and passed between the central system controller and the module. Both the integrated master and slave load cell include only a top platter and a load cell, with no base structure supporting the load cell.Type: GrantFiled: December 28, 2000Date of Patent: October 28, 2003Inventors: Tom J. Luke, Greg Arnold, Jim S. Havers, Gordy F. Gould
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Publication number: 20030159858Abstract: The proof body for a weighing apparatus is comprised of a profiled segment and it includes a measuring beam (9) joined at each one of its ends to a respective wing (10a, 10b) which extend substantially perpendicularly to the measuring beam (9) and of which the free side faces (11a, 11b) provide abutment faces. It further includes an abutment beam (13) which is parallel to the measuring beam (9) and which is connected thereto via two ribs (14), this abutment beam (13) being also connected to each one of the wings (10a, 10b) by a web (15) which is substantially parallel to the measuring beam (9). Under such circumstances, a strain gauge (18) affixed beneath the measuring beam (9) is subjected only to contraction strains when a force is applied beneath the abutment beam (13).Type: ApplicationFiled: February 10, 2003Publication date: August 28, 2003Applicant: S.C.A.I.M.E. S.A.Inventor: Jean-Pierre Aumard
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Patent number: 6603082Abstract: A device for controlling a physical system, such as a flow of pedestrians, in an extended area is suggested. In comprises a plurality of identical cell units with preferably hexagonal shape. The cell units are assembled in tile-like manner to form a floor. Each cell unit is equipped with a weight sensor, lamps of different colors, and optical communication ports as well as power connectors for connecting it to its neighboring cells. The cell units can be programmed to generate signals that control the physical system, such as signs understood by the pedestrians. Due to its modularity and simple design, the device is easy to install and maintain.Type: GrantFiled: October 10, 2000Date of Patent: August 5, 2003Assignees: Eidgenossische Technische Hochschule Zurich, Universitat ZurichInventors: Tobias Delbrück, Rodney James Douglas, Pierre Marchal, Paul Verschure, Adrian Maurice Whatley
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Publication number: 20030111275Abstract: A portable weighing system for a bed comprising a pair of scales placed under the legs or support members of a bed and a weight data collector unit. The scales are positioned directly below the ends of a bed and resting on the floor, the legs or support members of the bed are then placed on the scales. A unique structure is described which accurately determines the weight of a person in the bed regardless of that person's position on the bed. The scales are portable in that they can be readily placed into service (as under a bed) and they can also readily be removed and stored in a closet or basement.Type: ApplicationFiled: December 18, 2001Publication date: June 19, 2003Inventor: Louis E. Sternberg
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Patent number: 6576849Abstract: The invention disclosed consists of weighing apparatus and process that includes a new Calibration management utility to automate compliance testing to ISO 9000 requirements and has the “load cell symmetry”, “empty platform” and “test load” readings for each load stored on the weighing apparatus. This weighing apparatus makes periodic tests to determine the health of the load cells in the system, producing a log file to record events such as any detected failure, any suspicious reading, overload condition, or any user defined parameter, and is network enabled to be connected through a LAN via an Ethernet to the Internet.Type: GrantFiled: December 1, 2000Date of Patent: June 10, 2003Assignee: Mettler-Toledo, Inc.Inventors: Doug Bliss, Craig Stickel, James W. Bentz
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Patent number: 6563059Abstract: Fat weighing scale including a reinforced glass or acry-made square step board and a display panel and several control buttons arranged on front side of the step board. The display panel is connected to internal control chip set and cells. The center of the step board is provided with a conductive section which is connected with the control chip set in the display panel. An upper cover and a seat body are mated with each other on each corner of the step board. Each seat body is co-used with a transmission sensor, a switch seat, a restoring spring, a press leg, a press leg seat and a seat cover mated with the seat body. The transmission sensor is connected with a control chip connected to the control chip set of the display panel. Two conductive wires are wound between two seat bodies on two sides of the step board to serially connect the same. The switch seat is drivingly connected under the transmission sensor and provided with a switch at the center. The press leg is a case having a central projecting post.Type: GrantFiled: March 23, 2001Date of Patent: May 13, 2003Assignee: Shang Chuen Weighting Machine Co., Ltd.Inventor: Wu-Hsiung Lee
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Patent number: 6552278Abstract: The multiple load sensing multi-load cell scale is described that provides improved utility to scales with multiple decks that share load cells near supports so that more than one load may be determined at the same time on a single scale. In more detail, the scale uses the sectional sensitivities to load movement on the scale decks, load position and individual normalized load cell outputs to provide separate load magnitude measurements on these individual decks. According to the present invention, more than two load cells associated to form a single scale provide outputs that are converted to individual digital representations of the relative force magnitude on each. These magnitudes are related to the effective location of each load cell to provide the load centroid location on the scale when the sum of the products of the effective location and magnitude of each is divided by the sum of the magnitudes.Type: GrantFiled: September 10, 2001Date of Patent: April 22, 2003Assignee: Weigh-Tronix Inc.Inventor: Thomas Howard Johnson
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Publication number: 20030056995Abstract: The multiple load sensing multi-load cell scale is described that provides improved utility to scales with multiple decks that share load cells near supports so that more than one load may be determined at the same time on a single scale. In more detail, the scale uses the sectional sensitivities to load movement on the scale decks, load position and individual normalized load cell outputs to provide separate load magnitude measurements on these individual decks. According to the present invention, more than two load cells associated to form a single scale provide outputs that are converted to individual digital representations of the relative force magnitude on each. These magnitudes are related to the effective location of each load cell to provide the load centroid location on the scale when the sum of the products of the effective location and magnitude of each is divided by the sum of the magnitudes.Type: ApplicationFiled: September 10, 2001Publication date: March 27, 2003Inventor: Thomas Howard Johnson
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Publication number: 20020189867Abstract: The current invention involves a method and device of combining vehicle scales platforms to eliminate potential checking interferences. Disclosed is a novel method of combining independent scale platforms enabling independent weighing on each platform and at the same time a singular checking system for the combined scale. It involves utilizing three tie rod type links, which have been used in the past to combine scales longitudinally, and in the new invention, are used in the lateral direction. This reduces the complexity and associated cost of the combined scale checking system and increases the accuracy of said scale system by eliminating potential checking interferences. This is extremely significant in situations where side checking is inconvenient near where two scales connect, or in pit less and above ground scale designs.Type: ApplicationFiled: May 23, 2002Publication date: December 19, 2002Inventors: Thomas Rice, Zepu Liang, Steve Hamilton
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Publication number: 20020125051Abstract: A seat load measuring apparatus that can provide an accurate load output even when one or more sensors are exerted with a load in excess of its measurable load is provided. In a first instance, the output of each load sensor is read at Step S11. Subsequently, at step S12, whether or not there is any sensor whereof the output is in excess of the predetermined value is determined. If no output of these sensors is in excess of the predetermined value, it is regarded as normal, and the seat weight is obtained by summation of the outputs of the sensors at Step S13. When the output of any sensor exceeds the predetermined value, it is determined that an offset load is exerted thereon and thus the output of the sensor in question cannot be trusted. Therefore, the seat weight obtained immediately before the output of any of the sensors exceeds the predetermined value is regarded as the seat weight.Type: ApplicationFiled: March 7, 2002Publication date: September 12, 2002Applicant: TAKATA CORPORATIONInventor: Hiroshi Aoki
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Patent number: 6437257Abstract: A weighing machine useful for chiropractic and other medical treatment by accurately grasping the bias of the right and left, and front and rear weights of the person, and by recording momently changing center of the weight rested on right and left feet each, and center of the weight of the whole body. The weighing machine comprises two weighing device arranged right and left with a predetermined distance between them, and each weighing device is provided with a case body with a bottom plate, four weighing mechanisms arranged right and left, and back and forth on the bottom plate, means for positioning a person to be measured on the four weighing devices.Type: GrantFiled: October 5, 2000Date of Patent: August 20, 2002Inventor: Minoru Yoshida
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Patent number: 6433288Abstract: A conveyor weighing unit is provided for weighing objects transported along a conveyor. The conveyor is driven in a revolving manner over a weighing device. The weighing device includes two or more weighing platforms, each platform having a pre-defined platform length. Each weighing platform continuously weighs the conveyor belt section placed thereover and the object transported thereon. One or more adjacent weighing platforms constitutes a weighing unit having a total platform length equal or greater than the object length to be weighed. The weighing platforms are operatively connected to a data processing unit, which receives and processes data from the weighing platforms, and based thereupon, determines the length and weight of the object. An accordingly appropriate number of adjacent platforms are selected, having an added length at least equal to a length of the object to be weighed to thereby enable minimal spacing between adjacent objects and maximum operational capacity.Type: GrantFiled: September 5, 2000Date of Patent: August 13, 2002Assignee: Marel HFInventor: Jon Thor Olafsson
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Patent number: 6380496Abstract: An apparatus (10) for weighing wheeled or wheel- or caster-supported loads, including non-ambulatory patients confined to wheeled beds, which combines lift, support, and weight-measuring functions. The apparatus (10) is lightweight, portable, and employs a foot-activated lever-based design, including a foot bar (51) and pivoting wheel receptacle (50), for raising both the load and the load's wheeled support, if any. The apparatus (10) can be positioned for use without moving the load, and, because the apparatus utilizes leg and lower body strength, operators need not possess substantial arm or upper body strength. Thus, injuries which result from improper lifting techniques are avoided.Type: GrantFiled: August 25, 2000Date of Patent: April 30, 2002Assignee: Cardinal Scale Manufacturing CompanyInventor: Thomas Allen Lohkamp
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Publication number: 20020023785Abstract: A detachable weighing system for a bed comprising a plurality of weigh modules removably mounted upon legs or support members of a bed, a control unit, and a means for transmitting signals to and from the weigh modules, and control unit. The weigh module may be positioned directly below the lower end of the bed leg, resting on the floor. A unique structure is described which transmits vertical directed forces while minimizing off center of side directed forces so that an accurate weight is obtained.Type: ApplicationFiled: August 22, 2001Publication date: February 28, 2002Inventors: Louis E. Sternberg, Virginia Sternberg
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Patent number: 6346680Abstract: A weight and form sensing apparatus according to the present invention provides weight sensors on a base, in matrix pattern for instance. Each weight sensor has a load receiving portion on a top. Weight and form can be sensed by single weight and form sensing apparatus according to the present invention. That is, output values of the weight sensors are summed, so that an article put on the weight sensors can be detected. Also, the existence of the load on each weight sensor is determined based on output signal of each weight sensor, so that the bottom form and size of the article can be identified. The weight and form sensing apparatus according to the present invention can be preferably arranged into a feeding stream of the article because an arrangement of the sensors for identifying the form and size of the article does not interfere an arrangement of the feeding mechanism for the article.Type: GrantFiled: May 24, 2000Date of Patent: February 12, 2002Assignee: Toshiba Tec Kabushiki KaishaInventors: Atsushi Takahashi, Akira Kudo
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Patent number: 6046412Abstract: A heavy duty weigh scale including a rectangular weighing platform constructed of parallel and spaced apart I-beams, which platform is carried above ground with at least one stand supporting an I-beam of the platform. The stand having a pair of spaced apart upright supports of approximately the same length for supporting a load cell. The weight of the platform and object being weighed being directed to the load cell through a weight-transfer link connected to the platform. The weight-transfer link being located in a cut-out opening provided in the web of the I-beam supported by the stand.Type: GrantFiled: November 25, 1998Date of Patent: April 4, 2000Inventor: Daniel J. Rockwell
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Patent number: 6040532Abstract: A weight sensor (10) for sensing a load applied to a vehicle seat (14) includes a light source (16) for providing light and detectors (18, 20, 22, 24) for detecting light received from the light source (16). A member (50, 52, 54, 56) impedes the passage of light between the light source (16) and the detectors (18, 20, 22, 24) in response to the load applied to the seat (14). The light detectors (18, 20, 22, 24) provide a signal to a control device (27) indicative of the amount of light received. In response to the light detector signals, the control device (27) determines a value in accordance with the load applied to the seat (14).Type: GrantFiled: October 26, 1998Date of Patent: March 21, 2000Assignee: TRW Inc.Inventor: Carl A. Munch
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Patent number: 6013879Abstract: A multi-point cell type weighing machine has a plural number of scale cells set on a floor to support a table and to output weight signals indicative of weights measured thereby of a target object placed on the table. One or more floor vibration detecting cells are set on the same floor and output floor vibration detection signals indicative of the vibrations of the floor. The weight signals are corrected on the basis of vibration components of the floor vibration detection signals. A standard weight is placed at a larger plural number of places on the table than there are scale cells and output sensitivity ratios among the scale cells are calculated from outputted values from the scale cells, and the weight signals are further corrected on the basis of the output sensitivity ratios. These weight signals are added together and the weight of the target object is obtained from the added signal.Type: GrantFiled: September 3, 1997Date of Patent: January 11, 2000Assignee: Ishida Co., Ltd.Inventors: Yoshihiro Nakamura, Yukio Wakasa, Kazufumi Naito
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Patent number: 6002090Abstract: A force sensitive scale and dual sensor load cells for use therewith isolate, measure, and reject out residual rejected effects from the output of the scale. By isolating residual rejected effects, the overall accuracy of the scale may be improved, and the scale may be made substantially insensitive to the position of an object on the scale. In addition, where a scale includes multiple load cells coupled in parallel to a load receiving member and spaced apart in the direction of the force vector, the outputs of the load cells may be effectively scaled to cancel out frictional effects inherent in the scale.Type: GrantFiled: November 5, 1997Date of Patent: December 14, 1999Assignee: Weigh-Tronix, Inc.Inventors: Thomas H. Johnson, Roger A. Younger, Gene L. Justice, Kevin M. Fruechte
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Patent number: 5939681Abstract: A container-filling-and-weighing device having a frame and a connected weighing member. A first single point load cell is connected near the top of the weighing member and attaches to the frame. A second single point load cell extends from near the bottom of the weighing member and attaches to the frame. The load cells are preferably parallel, essentially identical and intersected by a vertical line. Any nonvertical force applied to the upper load cell is offset numerically by an equal and opposite nonvertical force applied to the lower load cell. These disparities are removed by averaging the numerical output from each load cell.Type: GrantFiled: October 28, 1997Date of Patent: August 17, 1999Assignee: Donald O. MarshallInventors: Donald O. Marshall, Donald G. Marshall
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Patent number: 5886302Abstract: An electrical weighing scale for measuring the weight of a user having has a substantially transparent platform, a plurality of supports, and a display assembly. Piezoresistive sensors, disposed in the supports, change resistance in response to a change in the weight applied to the scale. The piezoresistive sensors include piezoresistive elements arranged in a half bridge structure that has been calibrated to provide zero balance, span matching and impedance normalization. The sensors are coupled in parallel to a display. The parallel arrangements produces a composite output signal that enables any number of sensors to be used in the scales design.Type: GrantFiled: November 6, 1997Date of Patent: March 23, 1999Assignee: Measurement Specialties, Inc.Inventors: Damon Germanton, Mark W. Cappiello, Richard E. Tasker, Steven P. Petrucelli
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Patent number: 5823278Abstract: A caster mounted weighing system comprised of at least three weigh modules mounted to the bottom of a bed, container, or other surface suitable for weighing, a control unit, a junction box, and a means for transmitting signals to and from the weigh modules, junction box, and control unit. The weigh module may be comprised of a caster, which rests on the floor, a load cell attached to the caster, strain gauges or other means for measuring the load applied to the load cell, a stem or other attachment means which permits the weigh module to be mounted to the bottom of a bed frame, container, or other surface suitable for weighing, and a circuit board or other data storage means.Type: GrantFiled: June 6, 1995Date of Patent: October 20, 1998Assignee: Future Systems, Inc.Inventor: E. Randy Geringer
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Patent number: 5756938Abstract: A weight measuring apparatus which comprises an input signal switching circuit for selectively outputting analog signals input to a plurality of channels, analog-to-digital converter for converting an analog signal output from the input signal switching circuit into a digital signal, and a digital signal processing circuit for filtering a digital quantity output from the analog-to-digital converter for each channel, or filtering digital quantities from a plurality of channels after these digital quantities have been combined together.Type: GrantFiled: April 13, 1995Date of Patent: May 26, 1998Assignee: Ishida Scales Mfg. Co., Ltd.Inventors: Katsuaki Kono, Kazufumi Naito
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Patent number: 5750937Abstract: A multi-load cell force sensing apparatus includes a plurality of load cells supporting an operating surface and a controller which determines the position, as well as the magnitude, of an applied force relative to the operating surface. Impulse forces may be distinguished from static forces, thereby enabling the apparatus to function as a user input device whereby a user may request the apparatus to perform functions by pressing or touching a specified location on the operating surface.Type: GrantFiled: March 7, 1996Date of Patent: May 12, 1998Assignee: Weigh-Tronix, Inc.Inventors: Thomas H. Johnson, Gene L. Justice, Michael W. Lundgreen
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Patent number: 5717166Abstract: The invention is a system for combining the outputs of two transducers to provide a continuous reading over the combined ranges of the two transducers. The system applies an A.C. signal to the appropriate transducer; the steering for the excitation is controlled by the system microprocessor. The transducers are connected in series mechanically such that the low-range transducer is mechanically stopped before it is overloaded. The outputs of the transducers are connected in parallel and applied to the pre-amp which amplifies the A.C. error signal. The signal from the pre-amp is then applied to the analog-to-digital converter (ADC) for conversion. The ADC converts the pre-amp signal which is then sent to the system microprocessor over a serial link. The system microprocessor then applies the appropriate weighing algorithms to the data and then conveys that information to the parent system.Type: GrantFiled: October 24, 1994Date of Patent: February 10, 1998Assignee: Pitney Bowes Inc.Inventor: Paul C. Talmadge
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Patent number: 5583777Abstract: An apparatus for weighing aircraft, particularly aircraft prior to take-off, the aircraft having differing undercarriage wheel configurations (footprints), one to another, the apparatus for use on or in an aircraft roadway or the like. The apparatus comprises a plurality of spaced apart wheel load measuring devices and wherein at least the wheel load measuring devices for the respective main undercarriage wheels are mounted for lateral movement one to another, and in some cases computer controlled motorized movement controlled from the aircraft, so that they may be selectively positioned in spaced relation one to another to suit the various main undercarriage wheel spacings of the various aircraft to be weighed. A readout means is operatively linked to the load measuring devices in order to display the respective wheel loads registered by the respective load measuring devices. In some cases, a computer is included for calculating the center of gravity of the respective aircraft.Type: GrantFiled: January 5, 1994Date of Patent: December 10, 1996Inventor: Vivian G. Power
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Patent number: 5414225Abstract: A portable weighing device comprising two laterally displaced, electrically connection and rigidly aligned weighing modules is disclosed that permits convenient weighing of the mobility-disabled while occupying a conventional manually-operated wheelchair supported by two front caster wheels and two rear main wheels. The portions of the weight of the wheelchair supported by each wheel is successively summed and the tare is electronically subtracted. The weight of the occupant is then displayed. Accordingly with the weighing device wheelchair users can be conveniently weighted at rehabilitation centers, physician's offices or hospital clinics, or alternatively can weight themselves at their residence. The weighing device can be folded for carriage or storage.Type: GrantFiled: May 7, 1993Date of Patent: May 9, 1995Inventor: Moishe Garfinkle
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Patent number: 5410109Abstract: An apparatus and method is disclosed for a vehicle on-board weighing system. The system includes sensor housings which may be placed between elements of a load-bearing unit such as the axle and the spring assembly of trucks and tractor-trailers or between the frame and the air-ride housing assembly of vehicles so equipped. A sensor housing is preferably placed at each spring assembly of the vehicle. Each sensor housing contains a weight sensor in the form of a transducer. The electrical output signal of each of the transducers, which is proportional in amplitude to the weight-generated applied, is connected to a monitor module. Total weight of the vehicle load as well as weight distribution of each axle may be indicated by a display on the monitor module. The monitor module contains an eprom that stores information of unsprung weight, installation weight-force, and tare weight of the vehicle. It may also store data from one or more previous readings.Type: GrantFiled: April 22, 1993Date of Patent: April 25, 1995Inventors: Ralph E. Tarter, Timothy M. Gerstbauer
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Patent number: 5393936Abstract: An on-board weigh scale for a vehicle is disclosed. The weigh scale has a transport configuration wherein the weigh scale is substantially protected from damage during transport, and a weighing configuration wherein the weigh scale is in an operative condition for measuring the weight of a material. The weigh scale includes a support-frame capable of being mounted on a frame of a vehicle; a weight-frame mounted above the support-frame, and capable of supporting a quantity of a material. Structural supports are mounted on the support-frame for securely supporting the weigh-frame in the transport configuration. Hydraulic jacks are used to lift the weigh-frame off of the structural supports when said weigh scale is in transition between the transport and the weighing configurations. The weight of material is detected by load cells, via load transfer elements which are installed when the weigh scale is in the weighing configuration.Type: GrantFiled: September 18, 1992Date of Patent: February 28, 1995Assignee: Rancan Fertilizer Systems, Inc.Inventors: Gary Tyhy, Gordon Pizey, Jean-Paul Simbandumwe
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Patent number: 5384436Abstract: A mobile apparatus and method for weighing bales on an electronic scale in a field. Fixedly supported on the rear end of a mobile crop baler are two load cells from which is pivotably suspended the inboard end of a bale-receiving-structure. The outboard end of the bale-receiving-structure is adjustably supported by a tether from at least one other load cell fixed to a rearwardly extended portion of the baler which allows the outboard end to swing upwardly as the underside of the bale-receiving-structure encounters berms in the field thereby preventing damage to the electronic scale components. The weight of each bale produced by the baler is digitally readout in the baler cabin where, by comparison to a predetermined weight, real time adjustments are automatically or manually made to adjust bale weight to the predetermined weight, thereby achieving greater weighing accuracy and enhanced overall output from the field. The scale may be used on original equipment balers or made to retrofit existing balers.Type: GrantFiled: June 30, 1993Date of Patent: January 24, 1995Inventor: Gary E. Pritchard
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Patent number: 5349876Abstract: The invention relates to an apparatus for measuring products, including at least one hopper for feeding the product, at least one cell intended to receive the product and provided with a means for opening and closing for arbitrary evacuation of the product after measurement, and a weighing sensor.Type: GrantFiled: June 11, 1992Date of Patent: September 27, 1994Assignee: Star PartnersInventor: Dominique Le Gigan
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Patent number: 5338901Abstract: A conveyor belt scale of the weighbridge type is disclosed having a frame mountable above a run of conveyor belt idler, the weighbridge having a pair of weight transfer bars extending from each end of the device to support the entire weight of the weighbridge and conveyor belt, each of the weight transfer bars being cooperatively connected to a load cell apparatus, each pair of load cells at an end of the device is cooperatively connected by a strain gauge disposed to measure deflections of the load cells under the weight and tortional movement of material passing along the conveyor. The apparatus further contains a speed sensor device to measure the speed at which material moves along the conveyor and a programmable computerized integrator apparatus which accepts the information from the strain gauges and from the speed sensor to give a digital readout of an estimated weight and volume of material passing along the weighbridge at any given time.Type: GrantFiled: June 22, 1992Date of Patent: August 16, 1994Assignee: Kaskaskia Valley Scale CompanyInventor: Ron Dietrich
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Patent number: 5308933Abstract: A truck scale has a weighbridge built with two parallel beams for carrying the wheels of a truck. The beams are laterally interconnected, and are each narrower than half the width of the weighbridge, so there is a gap at the center between the beams. Each beam rests directly on load cell devices supported by foundation members. In very long scales each beam is composed of shorter sections, each supported by a pair of load cell devices. The gap in the center of the weighbridge is covered by removable cover plates or blocks, which may have side walls extending above the beams to limit the lateral travel of truck wheels on the scale.Type: GrantFiled: February 7, 1992Date of Patent: May 3, 1994Assignee: Flintab ABInventor: Nils G. Ahl
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Patent number: 5296655Abstract: The disclosed invention is a control system for the systematic testing, calibration, and operation of weighting apparatus having multiple inputs. The invention also provides a fault alarm.The system utilizes a summing network of resistors and switches to isolate and test or calibrate selected load cells controlled by the system Additionally, the summing network and the isolation switches of the control system provide a means for continued operation of defective scales having substantially equal load inputs. This is accomplished by electrically isolating those load cells which have become defective.Type: GrantFiled: February 10, 1992Date of Patent: March 22, 1994Assignee: Beowulf CorporationInventors: Michael P. Sargent, Timothy W. Williams
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Patent number: 5265763Abstract: A bulk material dosing or feeder device has at least one upright post mounted to a base and carrying a horizontal head section. A supply hopper is supported by the head section. Modular units such as a stirrer, a weigher or feeder or the like are vertically aligned, vertically below the hopper. At least one, preferably each modular unit is mounted on a respective swivel arm. The swivel arm is journalled to the upright post whereby the modular unit may be tilted into an operative position below the hopper or into an out position for easy access to and exchange of the modular units.Type: GrantFiled: May 13, 1992Date of Patent: November 30, 1993Assignee: Carl Schenck AGInventors: Harald Heinrici, Uwe Bachmann, Ludger Toerner
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Patent number: 5207285Abstract: A method and an apparatus for accurately weighing by a ladle weighing unit (2) of a metal melt in a ladle (3), in which the melt can be heated and stirred by power supplied by an induction coil (4). The induction field of the coil (4) is also applied to a coil weighing unit (1) so that the reaction force of the magnetic field influencing the melt is measured. In a weighing system (5), the net weight of melt is calculated by subtracting the signal of the coil weighing unit (1) from that of the ladle weighing unit (2). The weight change per time unit, which represents the mass flow rate of melt from the ladle, is calculated in the control system (6) and is used to control the pressure in the ladle in such a way the metal flow is kept constant.Type: GrantFiled: June 3, 1991Date of Patent: May 4, 1993Assignee: Sandvik ABInventor: Kenneth Josefsson
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Patent number: 5161628Abstract: The vehicle springs, here leaf spring (7) are the primary spring (and) measuring springs (11) engaged parallel thereto are the secondary springs of elastic force dividers. The part of the weight force of a vehicle (6) flowing over the measuring springs is led over a force sensor (5). A clinometer (12) measures both longitudinal and also transverse inclination of the vehicle (6). The signals of the force sensors (5) and of the clinometer (12) are fed to a computer, which forces the sum of the weight forces that act upon the (here) four force sensors (5). Besides the inclination correction mentioned, the computer performs all the weighing arithmetic operations, such as tare weight formation, weight difference determination, and also calculates transport performance magnitudes.Type: GrantFiled: January 8, 1991Date of Patent: November 10, 1992Assignee: Wirth Gallo Messtechnik AGInventor: Johannes Wirth
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Patent number: 4935885Abstract: An apparatus for use in determining the weight and the location of the center of gravity of a vehicle, particularly an aircraft prior to its taking off, comprising in combination at least one load-measuring device secured in a roadway or support for the vehicle and adapted for contacting load-supporting members of the vehicle when such is moved thereover or thereonto; computer means linked to the load-measuring devices and adapted to receive data therefrom; means for relaying to the operator of the vehicle data computed by the computer means, and sensor means linked to the computer means, the sensor means adapted to read characteristics of the vehicle as it observes the same and alert the computer, programmed for such characteristics. Also disclosed are methods based on use of the disclosed apparatus. Also disclosed are apparatus for and methods of processing vehicle passengers and their baggage to ensure safe operation of the vehicle.Type: GrantFiled: May 4, 1988Date of Patent: June 19, 1990Assignee: Aldis Consultants Inc.Inventors: Charles J. McHale, Joseph Marrone, David Watson
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Patent number: 4901807Abstract: A weighing machine that accepts product from a source, segregates it into discrete quantities, and combines a number of the discrete quantities into a group that closely approximates a target weight. The machine includes a feeder means that transports product from the source; a plurality of accumulating means which receive product from the feeder means and discharge discrete quantities of product therefrom in a plurality of selected directions; a plurality of weighing means having multiple compartment which receive product from the accumulating means into the multiple compartments and determine the weight of product in each individual compartment; and collecting means to receive product from the multiple compartment weighing means, consolidate it and direct it to another location. By using multiple compartment weighing receptacles, each containing a determined weight of product, the required number of weighing means is advantageously reduced and storage hoppers are not needed.Type: GrantFiled: October 31, 1986Date of Patent: February 20, 1990Assignee: Triangle Package MachineryInventors: Robert L. Muskat, Robert H. Connors, King Klopfenstein