Mettler-toledo Ag

Mettler-toledo Gmbh

Matthias Scheu

Peter Schilling

Dominique Genoud

Thomas Koeppel

Jean-Christophe Emery

Andreas Metzger

Thomas Köppel

Dominic Meyerhans

Marcel Schütz

Franz Balsen

Achim Merkel

Markus Flammer

A gravimetric measuring instrument () includes a housing () and a weighing cell (), wherein the latter is arranged inside the housing and includes a load-transmitting member (). The load-transmitting member reaches through a passage opening () of the housing and is releasably connectable to a load receiver (). The invention has the distinguishing feature that the load receiver includes a fastening element (), a weighing pan element () and a snap-locking device () for the releasable seating of the weighing pan element on the fastening element, wherein the snap-locking device includes a detent element () and a spring element () which engages the detent element when the weighing pan element is seated in place.

Load receiver with snap-locking connector

Weighing module

A calibration weight arrangement () for an electronic balance with a force-transmitting mechanism () has a calibration weight () adapted to be coupled to the force-transmitting mechanism. The arrangement also has a transfer mechanism and a drive source to manipulate the calibration weight in a guided movement. The drive source includes an actuator () cooperating with the transfer mechanism and at least one piezoelectric element () which drives the movement of the actuator. The piezoelectric element interacts with a drive wheel () that is centrally positioned relative to the calibration weight arrangement and drives a likewise centrally positioned shaft (). The interaction between the piezoelectric element and the drive wheel occurs during the advance movement in one direction through the repeated engagement and release of a frictional contact force.

Calibration weight arrangement for an electronic balance

A force-measuring cell is designed for a receiving structure having multiple force-measuring cells of the same type. Each cell in the receiving structure occupies a design space whose dimensions, projected into a plane orthogonal to the load direction, is delimited by the design spaces of neighboring and/or is equal to the largest dimension of the cell in the plane. The cell has parallel-guiding diaphragms arranged on upper and lower surfaces thereof. The cell includes a calibration weight arrangement with a calibration weight which can be coupled to the cell, as well as a drive mechanism and a transfer mechanism for guidedly moving the calibration weight. An actuator works together with the transfer mechanism and a piezoelectric element that drives the actuator. The actuator has at least two interacting elements to repeatedly engage and release each other by frictional contact force which occurs during the travel movement in one direction.

A device to weigh substantially uniform weighing objects has a plurality of weighing modules and an equal number of load carriers that have central lengthwise axes extending in the direction of the load. Each of the load carriers is connected, respectively, to one of the weighing modules through a force-transmitting rod, and the load carriers are disposed in a given spatial or two-dimensional arrangement in which the distances between neighboring central lengthwise axes are smaller than the largest lengthwise extension of the respective weighing modules.

Device for weighing substantially uniform weighing objects

Growing community of inventors

Uster, Switzerland

Matthias Scheu