Abstract: A weighing scale has a housing (1) that encloses a force transducer (4). A load-transmitting member (9) is connected to the force transducer (4) 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 (1) and a movable part that is attached to the load-transmitting member (9). The elastic device is preferably hollow and controllably expandable and contractible by injecting and removing a fluid through a conduit system (31-43) with a selectively switchable valve device.

Abstract: 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.

Abstract: A lever system (1, 7) for a weighing scale has an electrical transducer, particularly a strain gauge (14), producing signals corresponding to the amount of the weighing load. The transducer is attached to a body (1) that is coupled to the lever system (1, 7). The lever system (1, 7) includes a means (17) for receiving a calibration weight (18) in an arrangement where the forces generated by the calibration weight (18) and/or a damper element (5, 6) are magnified.

Abstract: A force-reduction mechanism for a force-measuring device is made of a monolithic material block (1) and has a stationary support (8), a plurality of levers (9, 15, 17), and coupling elements (11, 14, 16) connecting the levers. The fulcrum (10a) of at least one lever (17) is movable in relation to the stationary support (8). A movable fulcrum (10a) can, e.g., be located on a preceding lever (9), so that the fulcrum (10a) shares the motion of the preceding lever (9). The concept of a movable fulcrum allows a more space-efficient design of the mechanism.

Abstract: A weighing scale has a housing (1) that encloses a force transducer (4). A load-transmitting member (9) is connected to the force transducer (4) 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 (1) and a movable part that is attached to the load-transmitting member (9). The elastic device is preferably hollow and controllably expandable and contractible by injecting and removing a fluid through a conduit system (31-43) with a selectively switchable valve device.