Load sensor with strain-sensing elements

A load sensor comprising:

• a mount portion on one end of said load sensor, said mount portion being secured to an external device;
• an opening adjacent to the mount portion;
• strain-generating portions extending from said mount portion to the other end of said load sensor along side rims of said opening, said strain-generating portions having at least one flat print surface;
• a pressure-receiving portion, linked to said strain-generating portions at the other end, projecting in a shape of a tongue into said opening;
• and
• strain-sensing elements, formed by printing on said print surface of said strain-generating portions, for sensing strain of said strain generating portions, said strain caused by a load applied to said pressure-receiving portion, wherein
• the tip portion of said pressure-receiving portion is thinner than a proximal end of said pressure-receiving portion in thickness so that under no load applied to said pressure-receiving portion, said tip portion of said pressure-receiving portion stays below a plane containing said print surface in the direction of thickness of said pressure-receiving portion.