Patent ID: 7543510
Filing Date: 2009-06-09
Classification: H01H,Y10T

Abstract:
1. Foil-type pressure sensor comprising: a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer, said spacer comprising at least one recess defining an active area of the pressure sensor, and at least two electrodes and a layer of pressure sensitive material arranged in the active area of the pressure sensor between said first and second carrier foils in such a way that, in response to a pressure acting on the active area of the pressure sensor, the first and second carrier foils are pressed together against a reaction force of elastic carrier foils and an electrical contact is established between the at least two electrodes via said layer of pressure sensitive material, wherein at least one of said first and second carrier foils comprises a multi-layered configuration with at least two layers of different materials having different elastic properties so that the elastic properties of said at least one carrier foil are a combination of the individual elastic properties of said at least two layers.