A pressure sensitive electro-conductive material which can be utilized as a pressure sensitive electro-conductive switch or as a variable resistor. The switch comprises two electrodes with a deformable pressure sensitive electro-conductive material sandwiched between the electrodes. The electro-conductive...http://www.google.com/patents/US4745301?utm_source=gb-gplus-sharePatent US4745301 - Pressure sensitive electro-conductive materials
