Patent ID: 6898989

Claim:
A load cell comprising a load-carrying structural framework of two essentially parallel rigid beams, arranged essentially parallel to an applied load (f) and at least one measuring zone equipped with means for strain measurement arranged between the two beams, wherein the structural framework comprises two outer beams ( 1 , 4 , 301 , 304 ) which are connected by means of joints ( 7 - 10 , 307 - 310 ) to two inner beams ( 2 , 3 , 302 , 303 ) by at least two side beams ( 5 , 6 , 305 , 306 ) which each extend between said two outer beams and connect to said two outer beams and to said two inner beams, and at least one measuring zone ( 15 , 16 , 315 , 316 ) equipped with means for strain measurement is arranged between the two inner beams, and upon an application of a load in an x-direction parallel to the two outer beams, the amount of load applied to said at least one measuring zone ( 15 , 16 ) is in proportion to a ratio of a distance h between the joints ( 7 and 10 , 11 and 14 , 307 and 310 , 311 and 314 ) connecting outer beams ( 1 , 4 , 301 , 304 ) to side beams ( 5 , 6 , 305 , 306 ) divided by a distance d between the joints ( 8 and 9 , 12 and 13 , 308 and 309 , 312 and 313 ) connecting the inner beams ( 2 , 3 , 302 , 303 ) to the side beams ( 5 , 6 , 305 , 306 ) and said means for strain measurement are suitably adapted such that an output signal representative of the applied load or detected load change is generated.