Pressure sensitive electro-conductive materials
December 13, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2457962 3544507 3745118 3844811 Pressure sensitive resistance and process of making same Polycarbonate ribbon for non-impact printing Pressure sensitive resistance and process of making same Process for preparing direct imaging pressure fixable magnetic toners Direct imaging pressure fixable magnetic toners Pressure-sensitive electric conductive sheet material InventorAssigneeApplicationNo. 06/809075 filed on 12/13/1985US Classes:307/119, Mechanical force252/511, Resin, rubber, or derivative thereof containing338/99Surfaces pressed together (e.g., compressible type)ExaminersPrimary: Miska, Vit W.Attorney, Agent or FirmInternational ClassesH01C 10/10 (20060101)H01C 10/00 (20060101) H01B 1/24 (20060101) AbstractA 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 material comprises a deformable elastomeric material impregnated with a plurality of electro-conductive micro-agglomerates of unbound finely divided electro-conductive carbon particles enclosed by a matrix of the elastomeric material and finely divided electro-conductive carbon particles bound together by the elastomeric material.Other References
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