Mettler Toledo Inc.

New Bedford, MA, United States

Mettler Toledo Inc.

New Bedford, MA, United States

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Patent
Mettler Toledo Inc. | Date: 2017-03-06

Embodiments of the invention generally relate to weighing scale diagnostic methods employing a comparison of like component operating parameters. In certain embodiments, weighing scale component output signals may be analyzed to calculate the difference between any two current weighing scale component operating parameter values, and the calculated difference may be compared against a maximum allowable difference for determining if a problem exists. Alternatively, a statistical analysis may be performed that considers the output signal of a given weighing scale component relative to the output signal of another weighing scale component or to the collective output signals of all of the other weighing scale components, and the comparison may be used to determine if a problem exists.


Patent
Mettler Toledo Inc. | Date: 2017-05-31

Embodiments of the invention generally relate to weighing scale diagnostic methods employing a comparison of like component operating parameters. In certain embodiments, the difference between any two current operating parameter values may be compared against a maximum allowable difference, and/or the deviation of current operating parameters from a calculated measure of central tendency may be determined and compared against a maximum allowable deviation. Alternatively or additionally, a standard statistical test for outliers may be employed. An outlying difference or deviation may be indicative of a problem with the associated component. In other embodiments, the current operating parameters of like components may be compared against calibrated parameters and any deviation of the current parameter for a given component may be compared against the total deviation to determine the percentage of deviation attributable to that component.


Patent
Mettler Toledo Inc. | Date: 2015-05-28

A checkweighing device, checkweighing systems employing one or more checkweighing devices, and methods of operation thereof. The checkweighing devices are designed for installation between parallel, spaced apart and vertically offset infeed and outfeed conveyors. Each checkweighing device includes a weighing cell with a weighing platform; a slide chute and at least one sorting gate for directing items either to the outfeed conveyor or to a discard receiver; and a power-actuated rake for sweeping incoming items from the infeed conveyor to the weighing platform, and sweeping weighed items from the weighing platform to the slide chute. While in no way limited to such a use, exemplary checkweighing device, system and method embodiments are well-suited for automatically checking the individual weights of small articles of high value, and/or other items that need to be weighed with high accuracy.


Patent
Mettler Toledo Inc. | Date: 2015-11-04

Assemblies and methods for adjustably mounting scanners in scale/scanner devices, and scale/scanner devices employing such assemblies.


Patent
Mettler Toledo Inc. | Date: 2015-08-26

Exemplary embodiments described herein are directed to conveyor belt tracking mechanisms with a single adjusting element (60) and to conveyors having conveyor belts whose tracking may be adjusted in both directions using such conveyor belt tracking mechanisms. One exemplary conveyor belt tracking mechanism embodiment employs a pulley support yoke (35) coupled to a specialized angular linkage (45) having a linkage flexure pivot (55) that translates linear motion into angular motion.


Machine vision inspection devices and machine vision methods for inspecting objects, such as objects with shiny surfaces. Device embodiments include an illumination housing with a central aperture and a specialized aperture cover. Use of the claimed device embodiments to inspect objects eliminates the void (dark spot) common to known machine vision inspection methods.


A method of determining the mass of an object by scanning the object in a radiographic inspection system, specifically in an X-ray scanner with the capability to take scan images at a plural number J of energy levels, has three modes or parts, namely:- an initial learning mode in which reference objects of a nominally identical material composition which varies within a range expected for the objects to be weighed are scanned and their actual masses are determined by weighing, whereupon the scanning system learns and stores an initial set of reference values for the reference objects as well as coefficient values through which the mass of a sample object can be determined from its scanned image;- a normal operating mode, wherein sample objects of unknown mass m are scanned and the scan image data are analyzed for compatibility with the reference values and, if found compatible, the sample object mass is determined from the scan data with the help of the learned coefficient values, and if the data are found incompatible, the method switches to the learning improvement mode;- a learning improvement mode in which the actual mass of the sample object whose scan image data were found incompatible is determined by weighing, whereupon the scanning system updates the stored reference values and coefficient values based on said scanned image data and said weighed mass.


Methods of determining vehicle scale health and suitability for use via weight transfer pattern analysis. Dynamically changing patterns of measurement values are seen at each load cell of a vehicle weighing scale as a vehicle enters, remains on, and leaves the scale platform thereof during a normal vehicle weighing operation. These patterns may be analyzed to provide an indication of whether a given load cell is operating properly and/or being manipulated to produce a false weight reading.


Patent
Mettler Toledo Inc. | Date: 2015-04-10

Systems and methods for precisely mounting components by means of pins secured within pin receiving holes by an adhesive. Prior to curing of the adhesive, the use of the pins and holes will generally permit an adjustment of the position/orientation of at least one component, as well as the alignment of one component to another, while the pins reside in the pin receiving holes. Systems and methods of the invention allow for highly precise alignment of components that is stable over a range of temperatures and through temperature changes, while negating any effects of adhesive shrinkage, and without imparting any axial pre-load or other distortions to the components.


Patent
Mettler Toledo Inc. | Date: 2016-11-30

A checkweighing device, checkweighing systems employing one or more checkweighing devices, and methods of operation thereof. The checkweighing devices are designed for installation between parallel, spaced apart and vertically offset infeed and outfeed conveyors. Each checkweighing device includes a weighing cell with a weighing platform; a slide chute and at least one sorting gate for directing items either to the outfeed conveyor or to a discard receiver; and a power-actuated rake for sweeping incoming items from the infeed conveyor to the weighing platform, and sweeping weighed items from the weighing platform to the slide chute. While in no way limited to such a use, exemplary checkweighing device, system and method embodiments are well-suited for automatically checking the individual weights of small articles of high value, and/or other items that need to be weighed with high accuracy.

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