Resistance-gauge force transducer
AssigneeSfernice Societe Francaise de l'Electro-Resistance
InventorJean Cherbuy
Life of this patent
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Abstract
A resistance-gauge force transducer comprises a resilient bar having one end adapted to be fixed to a stationary support and the other end subjected to the force to be measured. The bar carries two pairs of resistance gauges symmetrically disposed on both sides of the center of gravity of the bar. The direction of the lines of current of a gauge of one pair is parallel to the bar axis and perpendicular to that of the other gauge of the same pair. The gauges are electrically connected together so as to form a wheatstone bridge delivering a signal which is a function of the force applied to the end of the bar. The two gauges of one pair are adjacent and connected to each other in the wheatstone bridge. This arrangement renders the force transducer insensitive to thermal variations.
Claims3
Resistance-gauge force transducer, comprising a resilient bar (1) having one end adapted to be fixed to a stationary support (2) and the other end subjected to the force (P) to be measured, wherein the bar carries two pairs of resistance gauges symmetrically disposed on opposite sides of the center of gravity (G) of the bar, the direction of the lines of current of a gauge of one pair being parallel to the bar axis and perpendicular to that of the other gauge of the same pair, the gauges being electrically connected together so as to form a Wheatstone bridge delivering a signal which is a function of the force (P) applied on the said end of the bar, the two gauges of one pair being adjacent and connected to each other in the Wheatstone bridge.
Dependencies are inferred from the claim text.