Self-supporting weight sensor and scale incorporating sensors of this kind
AssigneeSeb S.A.
InventorsDidier Anthoine-Milhomme, Bernard Pitaud, Michel Sarrazin
Life of this patent
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Abstract
A weight sensor includes a test body in the form of a bar carrying strain gauges, the bar bending due to the effect of the weight to be measured. The bar extends inside a frame, one end of the bar being joined to the frame, its other end being free with respect to the frame and having a bearing surface designed to be subjected to a force in the opposite direction to a reaction force applied to a bearing surface of the frame. The entire sensor is made in one piece in the form of a flat block.
Claims17
A weight sensor, comprising:
- a frame having a frame bearing surface;
- a bar having a constrained end attached to said frame at a frame section and a free end having an end bearing surface, said bar including said end bearing surface and being disposed within and entirely circumscribed by said frame;
- a strain gauge attached to said bar;
- said frame and bar positioned and arranged such that, when a weight is applied to the sensor, either of said end bearing surface and said frame bearing surface is subjected to a force and the other of said end bearing surface and said frame bearing surface is subjected to a reaction force.
Weight sensor suitable for use in a scale and in the form of a flat block comprising a test body in the form of a bar carrying strain gauges, said bar bending due to the weight to be measured, the opposite ends of said bar being each joined to a bearing surface designed to be subjected to a force in the opposite direction to a reaction force applied to the other bearing surface, one bearing surface being carried by a frame inside which said bar extends, and one end of said bar being joined to said frame, its other end carrying the other bearing surface, the latter being free relative to said frame and being completely circumscribed by the latter, said frame being rectangular in shape.
Dependencies are inferred from the claim text.