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US 4,233,523 AGranted
Pressure sensitive device
OwnerLars Jarder, Bengt Ahlstroeminventors
Life of this patent
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Abstract
A pressure-sensitive device is proposed which includes an electrically conducting element in the form of a loop, a screen arranged outwardly of the loop, and a resiliently compressible, non-conducting material between the screen and element, the arrangement being such that, on the application of a loading to the screen, the electrical inductance of the loop is changed, such change being sensed by a reactance-dependent detecting circuit (DET) connected therewith.
Claims5
A pressure-sensitive device capable of responding electrically to applied mechanical forces, said device comprising:
- a body of a flexible, non-conductive material;
- at least one electrically conductive loop which has opposite ends thereto and is embedded in the said body;
- a reactance-dependent detecting circuit which is connected to the said loop ends externally of said body and is sensitive to the inductive reactance of the said loop;
- and a screen of electrically conductive material incorporated in said body and extending alongside the said loop;
- said body being deformable on application of mechanical forces thereto so as to cause the inductive reactance of the loop to change.
2 more elements
Dependencies are inferred from the claim text.