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| Number | Title | Issue Date |
| 4977969 | Weighing apparatus with calibration weight means An electronic weighing apparatus is provided, including a self-contained calibration weight module that is operated by a motor to alternately connect and disconnect, respectively, a calibration weight relative to the vertically-displaceable parallelogram-... | 12/18/1990 |
| 4966241 | Vessel holding device for precision balances and analytical balances A vessel holding device is composed of a sheet metal strip which is bent to form a polygon. The resulting side wall members are provided with bores or recesses for holding the vessels, such as, test tubes or syringe cylinders in a predetermined manner. Th... | 10/30/1990 |
| 4938300 | Weighing apparatus having multi-range motion transmitting levers A weighing apparatus comprising a first self-contained weighing device (1) including a first farme (2), a first load-receiving member (5) connected by a parallel guide arrangement for movement from a normal no-load position relative to the first frame, a ... | 07/03/1990 |
| 4893686 | Draft protection device for precision balances A draft protection device for a precision balance including an exposed weighing dish. The device includes at least two hollow bodies of similar shape which can be telescopically slid one into the other. The hollow bodies are maintained in the desired posi... | 01/16/1990 |
| 4883444 | Coupling for transmitting a rotary motion A coupling for transmitting a rotary motion in both directions of rotation. The coupling includes a drive shaft and a driven shaft and has a freewheeling capability in both directions of rotation for rotary motions introduced into the driven shaft. One or... | 11/28/1989 |
| 4875534 | Weighing apparatus with improved electromagnetic load compensation Weighing apparatus of the load compensation type includes a source of constant current pulses the duration of which is determined by a regulating signal in response to the position of the load receiver relative to the frame, thereby to maintain the load r... | 10/24/1989 |
| 4872522 | Electronic weighing apparatus including guide adjusting means Electronic weighing apparatus includes an adjusting arrangement for vertically adjusting relative to the scale frame at least one of the resilient bending bearings that supports one end of a guide member of the parallelogram arrangement that guides the lo... | 10/10/1989 |
| 4860839 | Weighing apparatus including active low-pass filter means A weighing system including a weighing cell (1) which supplies a measurement signal (I) to an A/D converter (3) via a signal line (2). An interference signal (i), superposed on the measurement signal, is decoupled out of signal line (2) at the signal outp... | 08/29/1989 |
| 4862401 | Apparatus, specifically a balance, having a display of results of successive function sequences The apparatus which preferably is designed as a scale or balance comprises a circuit which can execute certain function sequences in succession independent of one another by means of function selecting keys. The circuit comprises a matrix which stores a s... | 08/29/1989 |
| 4859608 | Method and apparatus for titrimetric content determination in a chemical solution In a new method for the titrimetric determination of the contents in a chemical solution, wherein a quantity of a reaction component, corresponding in each case to the change of a certain physical-chemical magnitude or a value derived from that, is added ... | 08/22/1989 |
| 4858161 | Method for the automatic calibration of a high-resolution electronic balance The calibration process is initialized as a function of the past measurement results. The time to the next calibration is dependent on the quality of the calibrations in the past. Before the calibrating of the balance, the program checks a number of param... | 08/15/1989 |
| 4814692 | Circuit and method for measuring and digitizing the value of a resistance The invention relates to a circuit and a method adapted for measuring and digitizing the value of a resistance. The circuit includes and A/D converter operating in accordance with a charge balancing principle, and a resistance network connected to the A/D... | 03/21/1989 |
| 4799798 | Method of and an apparatus for an optical measuring of a position The method of measuring positions is based on tracking an interference pattern which is generated when line grids is different line densities are superimposed. According to the present method the line grid of an optical scale is projected onto a line grid... | 01/24/1989 |
| 4762190 | Weighing apparatus including wind shielding means A weighing apparatus is provided with a wind shielding arrangement for protectively enclosing a load-receiving scale member. A plurality of symmetrical curvilinear concave transparent shell-like wind shield sections of unequal diameters of generation are ... | 08/09/1988 |
| 4762428 | Temperature sensor for a dryer accessory on a weighing device A temperature sensor includes an elongated support of a material having good thermal conductivity. The temperature sensor element is pressed against the support by a spring element, in order to measure the temperature of the support. A mean temperature va... | 08/09/1988 |
| 4754823 | Capacitive position sensing means for weighing apparatus of the electromagnetic load compensation type Weighing apparatus of the electromagnetic load compensation type includes an improved variable (Cx) and reference (Co) capacitance comparison arrangement for sensing the position of the movable load receiver member relative to the st... | 07/05/1988 |
| 4740078 | Force measuring apparatus and method using stress-induced birefringence in a single-mode optical fiber The force measuring apparatus includes a single-mode optical fiber having a defined anisotropy, whereby coherent light suppled to one end of the optical fiber is guided as two waves having linear orthogonal polarizations, respectively. The optical fiber i... | 04/26/1988 |
| 4732228 | Precision balance Precision balance including a weighing dish supported by a support member which is guided by means of guide arms in such a way that weighing dish performs essentially a vertical movement during weighing. The spacing between the ends of the guide arms is e... | 03/22/1988 |
| 4730683 | Electromagnetic load-compensation weighing apparatus including temperature compensation means Weighing apparatus of the electromagnetic load compensation type is provided with a movable coil arranged in the air gap of a permanent magnet system, and which includes a load-compensation winding through which flows a load-dependent compensation current... | 03/15/1988 |
| 4723615 | Precision balance A precision balance in which the fastening surface (56) for an upper guide arm (22) is fastened to a housing (42) which, by means of a pair of parallel levers (48,50) is vertically movable along the side wall (24) of the balance (18). The movement is effe... | 02/09/1988 |
| 4719086 | Buret apparatus including a stopper containing a siphon passage Buret apparatus of the type including a buret conduit terminating at one end in a siphon, characterized in that the siphon includes a siphon passage formed on a stopper that is removably mounted in the buret conduit. The improved siphon structure is relat... | 01/12/1988 |
| 4716774 | Force measuring cell with a force sensor in the form of a bendable support A force measuring cell has a force sensor in the form of a bendable support. The base part and the load-receiving element of the force sensor are connected by two elastically bendable link members with pronounced bendable segments. Strain gauge elements i... | 01/05/1988 |
| 4700793 | Precision balance A precision balance including sliding side doors and an upper cover forming the weighing chamber of the balance. The side doors and the cover can be moved individually or coupled together either manually or driven by a motor. Side parts of the support mem... | 10/20/1987 |
| 4676327 | Precision scale of the electronic signal processing type having an auxiliary keyboard A precision scale of the electronic signal processing type includes a housing (5) containing a weighing chamber (3) and having a main keyboard (7) integral with or rigidly connected to the housing, characterized by the provision of an auxiliary keyboard (... | 06/30/1987 |
| 4674582 | Platform-type scale A scale of the platform type includes a base frame, a lever mechanism for force-transmission connected to the base frame, and including a plurality of two-armed levers, a weighing platform supported by the two-armed levers, a measurement transducer dispos... | 06/23/1987 |
| 4651441 | Drying oven including shuttle transporting means A drying oven is disclosed including apparatus for transporting a shuttle (51) longitudinally in a drying conduit (5) arranged within an oven, characterized in that the transporting apparatus is at least partially contained within a housing (15) that herm... | 03/24/1987 |
| 4629018 | Electrical balance with acoustic feedback signal for manual dosing or mixing An electronic scale controlling a material feed generates a control signal as the material fed approaches a desired weight. An acoustic tone signal varying in accordance with the control signal and reaching a limiting value when the control signal signifi... | 12/16/1986 |
| 4628470 | Apparatus and method for generating a pictorial display on a measuring instrument during a metering process To start a metering process, the operator enters the desired weight value into a display control. The display contains a container shaped figure which is "filled" as material is added to the balance. The rate at which the container fills relative to the r... | 12/09/1986 |
| 4627505 | Weighing apparatus and method for automatically monitoring a constant current source Weighing apparatus of the load compensation type including a position sensing circuit for supplying current pulses from a constant current source to a compensation coil to return the load platform--after the application of a load thereto--toward its initi... | 12/09/1986 |
| 4591011 | Balance with clock-like display An optical display is provided to guide the operator during metering of a substance to a desired value. The desired value is entered into a computer and the substance to be metered is applied to a balance. The display is in the form of a clock having a co... | 05/27/1986 |
| 4567481 | Measuring instrument display with exchangeable legends for different languages or operating modes In addition to the normal weight display, a display for a balance has a number of other areas in each of which a word indicative of an operation which has been or may be carried out is displayed. The words to be displayed are arranged on an exchangeable c... | 01/28/1986 |
| 4554988 | Method and system for displaying relative values on a multi-segment display When a measuring instrument normally displaying digital values by selective energization of a multi-segment display is used to furnish only qualitative information as to the relationship of the measured value to a reference value or values, the result is ... | 11/26/1985 |
| 4549623 | Apparatus for automatically monitoring a constant current source in a measuring instrument An automatic monitoring system for the constant current source in a balance having electromagnetic load compensation includes circuitry which generates a first current varying in dependence on the constant current and furnishes a digital signal indicative... | 10/29/1985 |
| 4545448 | Weighing apparatus including improved yoke construction Weighing apparatus of the electromagnetic load compensation return-to-zero type including a vertically displaceable load support member to which is connected a load compensation coil arranged for movement in a stationary magnetic field, characterized in t... | 10/08/1985 |
| 4541495 | Weighing apparatus of the vibratory string type A weighing apparatus of the vibratory string type is disclosed, wherein a current-carrying string connected intermediate its ends between a movable load-responsive member and a frame vibrates in a magnetic field produced by a permanent magnet mounted on t... | 09/17/1985 |
| 4512429 | Weighing apparatus for producing geographically-corrected measurements An electromechanical weighing apparatus is disclosed including a device for correcting the load measurement in accordance with the given gravitational force existing at the geographical place of installation of the weighing apparatus. An adjusting mechani... | 04/23/1985 |
| 4497386 | Weighing apparatus including improved force-transmitting lever means Weighing apparatus of the short-stroke type is disclosed including a resilient parallel guidance arrangement (3) connecting a load-receiving member (2) for vertical movement relative to a console member (1), characterized by the provision of a pivotally m... | 02/05/1985 |
| 4489800 | Temperature-compensated weighing apparatus Electromagnetic load compensation weighing apparatus including a temperature correction circuit having a temperature-responsive element mounted in heat sensing relation relative to the permanent magnet, characterized by the further mounting of a component... | 12/25/1984 |
| 4475409 | Transducer for dynamometer The measuring element for a dynamometer consists of a band-shaped substrate of amorphous metal. The band-shaped substrate has one or two necked-down sections on which strain gauge resistors are arranged in the direction of load application. The resistor o... | 10/09/1984 |
| 4470314 | Measuring apparatus of the vibratory string type Improved measuring apparatus of the vibratory string type including a molded synthetic plastic body member containing a horizontal through passage for receiving the permanent magnet excitation and sensing system, and a pair of integral parallel horizontal... | 09/11/1984 |
