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| Number | Title | Issue Date |
| 8161829 | Circuit compensation in strain gage based transducers A methodology for selecting and properly placing foil strain gages on a transducer in a Wheatstone bridge, which provides a more consistent creep response, especially when the transducer temperature is changed. A transducer includes a counterforce subjected to a pre... | 04/24/2012 |
| 7404338 | Force sensor The resolution and the signal-to-noise ration of known force sensors as e.g. capacitive force sensors decrease when scaling them down. To solve this problem there is a solution presented by the usage of a nanostructure as e.g. a carbon nanotube, which is mechanicall... | 07/29/2008 |
| 7373846 | Load cell attachment structure This load cell attachment structure includes a male screw which is formed on a load sensing part of the load cell, a nut which attaches the load cell to the attachment plate by engaging with the male screw, and a wave washer which is disposed between the attachment ... | 05/20/2008 |
| 7371978 | Thermally insulated weighing module Weighing module having a first mounting device which is in force-transmitting contact with a load that is to be determined, also having a second mounting device which is connectable to a supporting structure that supports the weighing module. A load cell is arranged... | 05/13/2008 |
| 7361852 | Weighing module Weighing module having a first mounting device which is in force-transmitting contact with a load that is to be determined, also having a second mounting device which is connectable to a supporting structure that supports the weighing module. A load cell is arranged... | 04/22/2008 |
| 7342185 | Compression column load cell with compensation for off center loading errors Simple and inexpensive electrical compensation for off-axis and off-center loading sensitivity is possible in compression column load cells having a pair of compensation strain gages in series with each of the main strain gages in the load cell. The compensation gag... | 03/11/2008 |
| 7294793 | Load cell mounted with a spring biased saddle element A load cell includes a first element, a second element and a sensor measuring force between the first and second elements along a first axis. In some embodiments, lateral and angular decoupling is provided by the provision of a convex surface between the first and s... | 11/13/2007 |
| 7275452 | Stop assembly for a beam type load cell A beam load cell transducer is positioned between a stationary member and moveable member. The stationary member, as well as the moveable member are surrounded by a collar, which collar has an inner surface means to limit the movement of the moveable member of the t... | 10/02/2007 |
| 7241956 | Weight measurement system for steel mill transfer cars A weighing system for a ladle transfer car is disclosed. For each wheel of the transfer car, a heat-resistant load cell designed to tolerate temperatures of at least 550 degrees Fahrenheit is mounted in axle block housings on each side of each wheel. Each load cell ... | 07/10/2007 |
| 7214893 | Load cell system A load cell system for stationary or moving equipment is disclosed, wherein undesirable bending, shear, and torsion loads are minimized and an accuracy of the load cell system is maximized. ... | 05/08/2007 |
| 7141991 | Instrumentation current loop An instrumentation current loop, including a transducer having transducer output terminals. A power source is connected in series to the transducer. A bridge has a first arm and a second arm extending between a pair of input terminals, where the input terminals of t... | 11/28/2006 |
| 7094976 | Vehicle weight measuring structure and vehicle weight measuring apparatus using the same Disclosed is a vehicle weight measuring structure. The structure comprises a base plate; a plurality of support elements placed on the base plate, each support element having a pair of legs which project downward and are separated from each other by a predetermined ... | 08/22/2006 |
| 7086297 | Seat belt tension sensor having shock isolation A seat belt tension sensor is attached to a seat belt assembly in a vehicle. The seat belt tensor sensor is secured to the vehicle by a bolt. The sensor includes a housing that is secured by the bolt. An anchor plate is mounted to the housing. The anchor plate has a... | 08/08/2006 |
| 7086299 | Multi-load beam apparatus to prevent improper operation due to off-axis loads A multi-load beam transducer includes a fixed member, a movable member, and a plurality of load beams positioned between the members, each beam separated by a given distance normal from each other and positioned about a longitudinal axis between the members. The plu... | 08/08/2006 |
| 7040172 | Micromechanical high-pressure sensor A micromechanical pressure sensor and a method for producing a micromechanical pressure sensor. This pressure sensor has at least one membrane and a measuring element situated on the membrane. A pressure applied at the membrane or a pressure differential applied at ... | 05/09/2006 |
| 7009118 | Vehicle load weighing system and load cells for such systems The present invention relates to a load cell operable with a vehicle having a chassis and a container carried by the chassis, with the load cell supported by the chassis and supporting the container for measuring the weight of the container and any load therein, and... | 03/07/2006 |
| 7005587 | Load cell including angular and lateral decoupling A load cell includes a first element, a second element and a sensor measuring force between the first and second elements along a first axis. In some embodiments, lateral and angular decoupling is provided by the provision of a convex surface between the first and s... | 02/28/2006 |
| 6888074 | Compression column load cell Simple and inexpensive electrical compensation for off-axis and off-center loading sensitivity is possible in compression column load cells comprising a pair of compensation strain gages in series with each of the main strain gages in the load cell. The compensation... | 05/03/2005 |
| 6677538 | Signal processing in a vehicle weight classification system A vehicle weight classification system recognizes the various factors that influence system performance. Some of the factors are compensated for using analog signal processing circuitry or techniques. Other factors are compensated for using digital signal... | 01/13/2004 |
| 6633008 | Electronic force sensing shock resistant load cell The electronic load cell is for measuring force using a force sensor within and has reduced susceptibility to shock or impact in the direction of its measurement vector. The load cell device includes a load cell structure formed of a suitable solid and in... | 10/14/2003 |
| 6402635 | Apparatus and method for measuring reaction forces and weight shifts The force plate data acquisition system measures, processes and analyzes the vertical reaction forces and various weight shifts between the ground and a golfer's feet during a swing. Plates are supported on cantilever beams through ball bearings. The beam... | 06/11/2002 |
| 6173619 | Method and device for effecting temperature compensation in load cell type load detector The apparatus for effecting temperature compensation in a load cell type load detector is for a load detecting apparatus having a load cell constituting the load detector formed with a strain gauge attached to a deflectable body, a mount base for position... | 01/16/2001 |
| 6122979 | Vehicle load measuring apparatus When there is a difference in characteristic between sensing devices received respectively in receiving portions disposed at the opposite ends of a shackle pin and, therefore, the voltage of a load signal obtained from the sensing device in the receiving ... | 09/26/2000 |
| 5629489 | Load cell assembly with linearization and common mode discrimination of complementary force-responsive signals A load cell assembly includes a load cell body having a pair of sensors mounted therein which provide complementary output signals in response to a force applied to the load cell body. A linearization and common mode discrimination routine analyzes change... | 05/13/1997 |
| 5165290 | Force transducer A transducer for converting an applied curvilinear force into an electrical output signal. The transducer includes a load cell that converts the input signal in the form of a curvilinear applied mechanical force into an electrical output signal that is pr... | 11/24/1992 |
| 5155450 | Interface circuit A circuit for interfacing with the outputs of a differential pressure sensor provides a single-ended output voltage translated in voltage level with respect to the differential voltage applied thereto from the sensor while cancelling the common mode offse... | 10/13/1992 |
| 5123283 | Diametral change sensor for a cylindrical member A sensing device for determining diametral changes of a cylindrical member which includes a clamp member having a body adapted to be positioned around the periphery of the cylindrical member and removably attached in at least partially spaced relationship... | 06/23/1992 |
| 5078015 | Balance and dynamometer An elastic force reducing balance and dynamometer comprising a primary spring and a secondary spring which are stressed by bending when an input force is exerted. In at least one of the primary and secondary springs, at least one bar is formed which is st... | 01/07/1992 |
| 5029483 | Measuring platform A measuring platform having at least one force transducer rigidly fixed to either the base or cover element and to the other of the base or cover element movably to minimize measuring errors due to bending of the cover element under forces to be measured.... | 07/09/1991 |
| 5024107 | Pressure or force sensor having an axially symmetrical pressure or force-receiving circular plate spring The invention relates to a pressure or force sensor having an axially symmetrical, force-receiving circular plate spring which has a reinforced edge region (5) which serves as a support on a carrier, said spring being provided with strain gauges. To preve... | 06/18/1991 |
| 4979580 | Force measuring device with sensitivity equalization A force or weight measuring load cell arrangement of the planar gaged plate load cell type with bending beam members is made insensitive to the point of load application by bonding strain gages alternately on the top surfaces and on the bottom surfaces of... | 12/25/1990 |
| 4973949 | Dual wheatstone bridge strain gage marine intrusion sensor Two wheatstone bridge circuits, each having detectors in the form of strain gages in the arms thereof, are connected to carry out detection of entry into the perimeter of the detection area such as the main deck of a boat. Each of the wheatstone bridge ci... | 11/27/1990 |
| 4958526 | Force measuring device with zero adjustment A strain gage load cell is adjusted to zero output signal at no load or a fixed tare load on the load cell independent of the load cell temperature by shunting a pair of opposing arms of the strain gage bridge by equal resistors, and connecting a pair of ... | 09/25/1990 |
| 4945762 | Silicon sensor with trimmable wheatstone bridge A device and method for trimming diffused or implanted resistors incorporated within a silicon sensor. Current pulses are applied to cause the migration of aluminum contacts in silicon, resulting in controllable incremental reductions in resistor value. T... | 08/07/1990 |
| 4869113 | Method for calibrating appliances for the measurement of force or moment and appliances relating to said method In order to calibrate an appliance for measuring force or moment, the measuring element (l) carries a strain gage bridge (R1, R2, R3, R4) for delivering a signal which is mainly sensitive to the force or to the ... | 09/26/1989 |
| 4821583 | Tension measuring apparatus A threadline tension measuring apparatus having a dual beam cantilever supporting an even threadline guide surface wherein tension measured is insensitive to axial location of threadline loading. Overload and structural protection for the apparatus are pr... | 04/18/1989 |
| 4804053 | Rocker pin load cell A compression type load cell is provided consisting of a self-stabilizing rocker pin symmetrical about a primary longitudinal axis for measuring a load force applied to the load cell. Strain gages mounted circumferentially around a center section of the r... | 02/14/1989 |
| 4765423 | Load cell adaptor This invention relates to the design and construction of an adaptor for load cells with through loading holes (primarily cylindrical or doughnut type) used in multiple cell applications (scales); it provides lateral stops and anti-tipping control for the ... | 08/23/1988 |
| 4744254 | Force measuring device A force measuring device of unitary design comprising a beam provided with force sensitive elements supported on a base plate by support elements at a closed distance, the support elements being housed in recesses provided at bottom surface of said beam a... | 05/17/1988 |
| 4733571 | Linearization of column-type load cell Column-type load cells having recessed portions on opposite sides to receive strain gauges mounted on the web in the recesses for more linear response are improved by reduced cross sections off each end of the recesses, and/or by flexures off each end, wi... | 03/29/1988 |
