Mettler-toledo Gmbh

Marc Iseli

Jean-Christophe Emery

Thomas K&ouml;ppel

A weighing scale has a housing ( ) that encloses a force transducer ( ). A load-transmitting member ( ) is connected to the force transducer ( ) and passes through an opening to the outside of the housing to transmit the weighing load to the force transducer. An elastic device is interposed between a fixed part that is attached to the housing ( ) and a movable part that is attached to the load-transmitting member ( ). The elastic device is preferably hollow and controllably expandable and contractible by injecting and removing a fluid through a conduit system ( ) with a selectively switchable valve device.

Weighing scale with a combined sealing and arresting device

A lever system is provided for a weighing scale includes a transducer arrangement associated with an integral monolithic block for producing a weight signal corresponding with the weight of a load that is applied to the block. The lever system is operable to receive a calibration weight and to transmit to the load-receiving portion of the block a calibration force that is magnified by the lever system.

Calibration system for a weighing scale

A force-reduction mechanism for a force-measuring device is made of a monolithic material block ( ) and has a stationary support ( ), a plurality of levers ( ), and coupling elements ( ) connecting the levers. The fulcrum ( ) of at least one lever ( ) is movable in relation to the stationary support ( ). A movable fulcrum ( ) can, e.g., be located on a preceding lever ( ), so that the fulcrum ( ) shares the motion of the preceding lever ( ). The concept of a movable fulcrum allows a more space-efficient design of the mechanism.

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Uster, Switzerland

Marc Iseli