G - Physics – 01 – G
Patent
G - Physics
01
G
265/1, 259/97
G01G 19/22 (2006.01)
Patent
CA 2019143
ABSTRACT In a load cell for incorporation into an electronic weigh scale in turnincorporated into a portable or stationary machine for mixing feed for livestock, it is common to incorporate said electric load cells into said feed mixer in such a way as to result in said load cells being loaded in compression while supporting said feed mixer. Said load cells are generally used in combination with suitable display apparatus to provide indication of the weight of the feed in said feed mixer. In this invention, the load cell consists of a load sensing element in the form of a vertically-oriented cylindrical body comprising a central sensing beam and two load introducing members immediately above and below the sensing beam and connected to alternate ends of the sensing beam in such a way as to allow a compressive load to be applied to said load introducing members. The sensing beam incorporates a plurality of electric resistance strain gages which sense shear strain in the beam which is proportional to the applied load. Such strain gages are connected in a bridge configuration to develop an electric signal which is proportional to the applied load but relatively insensitive to forces applied in any way other than compression between said load introducing members. The electric signal may be transmitted to a suitable electronic indicating device.
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