Pressure sensitive electro-conductive materials
April 26, 2008. 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. 186186 filed on 04/26/1988US Classes:252/511, Resin, rubber, or derivative thereof containing252/502, Elemental carbon containing252/510With organic componentExaminersPrimary: Barr, JosephineAttorney, Agent or FirmInternational ClassH01B 001/06AbstractThe invention relates to 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 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
Field of SearchResin, rubber, or derivative thereof containingElemental carbon containing With organic component Mixing with carbon, e.g., graphite, etc., having numerical limitations, other than amount, e.g., included herein are particle size, surface area, etc., or composition or product thereof, DNRM Carbon particle having specified dimension Mechanical force Surfaces pressed together (e.g., compressible type) Granular With resilient pressure-applying linkage Deformable Glass or ceramic (i.e., fired or glazed clay, cement, etc.) (porcelain, quartz, etc.) | |
