Load Cell
AssigneeSiemensAG
InventorNils Aage Juul Eilersen
Life of this patent
Estimating the term…
Abstract
A load cell includes a cylindrical ring with one end closed by a membrane configured to receive a load or force to be measured. A sensor carrier plate is arranged in a cavity formed by the ring and the membrane. The sensor carrier plate is coupled to the membrane to undergo a displacement upon deflection of the membrane. The sensor carrier plate has an inner and an outer portion and carries in the outer portion at least one sensor adapted for sensing the displacement and generating a signal based on the load or force applied to the membrane. The sensor carrier plate is movably coupled to the membrane at a location between the inner portion and the outer portion. At least one further sensor is arranged in the inner portion generating a signal changing with opposite sign with respect to the signal of the sensor.
Claims15
-11. (canceled)
A load cell, comprising:
- a cylindrical ring having a first end and a second end;
- a membrane closing one of said first and second ends of said cylindrical ring and arranged to receive a load or force to be measured, said cylindrical ring and said membrane defining a cavity;
- a sensor carrier plate arranged in said cavity and coupled to said membrane so that said sensor carrier plate undergoes a displacement upon a deflection of said membrane in response to the load or force to be measured, said sensor carrier plate having an inner portion and an outer portion, said sensor carrier plate being movably coupled to said membrane at a location disposed between said inner portion and said outer portion;
- at least one outer sensor arranged on said sensor carrier plate in the outer portion sensing the displacement and generating a signal based on the load or force applied to said membrane;
- and
- at least one inner sensor arranged on said sensor carrier plate in the inner portion sensing the displacement and generating a signal based changing oppositely with respect to said signal generated by said at least one outer sensor.
Dependencies are inferred from the claim text.