Patent ID: 8800391

Claim:
A device to measure the force from a load, the device comprising: a plunger configured to receive the force from the load, wherein a lower surface of the plunger has a ring-shaped first groove; a disc-shaped membrane having an upper surface and lower surface, wherein the membrane is flexible according to the force received by the plunger, wherein the upper surface of the membrane has a ring-shaped first bump configured to complementarily fit into the first groove on the lower surface of the plunger, and wherein the lower surface of the membrane has a ring-shaped second bump; a sensor centrally disposed on the membrane, wherein the sensor measures the force of the load when being bent or compressed caused by the membrane; and a support plate having a ring-shaped second groove configured to complementarily fit into the second bump, wherein the force received by the plunger from the load is transmitted to the membrane, causing the membrane to flex, which in turn causes the bending or compressing of the sensing means, resulting in the measurement of the force from the load.