APPARATUS FOR RAISING AND LOWERING BUILT-IN WEIGHT Russian patent published in 2011 - IPC G01G23/01 

FIELD: physics.

SUBSTANCE: in the apparatus for raising and lowering a built-in weight, which applies a load from the built-in weight to the load measuring mechanism of the weighing apparatus and then removes the load in order to calibrate the weighing apparatus and performing general weighing operations, the built-in weight is locked in a weight holder and the weight holder can be raised and lowered relative the fixed part. Between the weight holder and the lower fixed part there is an elastic body, and between the weight holder and the upper fixed part there is an actuating container. The volume of the actuating container can be varied according to the inner content. The weight holder is lowered by increasing the volume of the actuating container, and is raised under the effect of the reverse force of the elastic body as a result of reduction of the volume of the actuating container, according to which the load from the built-in weight is directly applied to the load measuring mechanism and removed from the load measuring mechanism by changing the volume of the actuating container.

EFFECT: low cost and size of the device for applying a load from the built-in weight to the load measuring mechanism of the weighing apparatus and removal thereof, high reliability and simple design of the device.

12 cl, 8 dwg