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| Number | Title | Issue Date |
| 6563415 | Analog sensor(s) with snap-through tactile feedback An analog sensor depressible by a single human finger/thumb. Depressive force is applied to a dome-cap and to analog materials for varying an analog output of the sensor responsive to varying force applied by a single finger or thumb. Depressive force cau... | 05/13/2003 |
| 5977861 | Current limiting device with grooved electrode structure A current limiting device utilizes an electrically conductive composite material and an inhomogeneous distribution of resistance structure. The current limiting device has a conducting filler and at least two electrodes, where at least one of the electrod... | 11/02/1999 |
| 5929744 | Current limiting device with at least one flexible electrode A current limiting device has an electrically conductive composite material, an inhomogeneous distribution of resistance structure comprises a conducting filler, and at least two electrodes. At least one of the electrodes is a flexible electrode to mainta... | 07/27/1999 |
| 5302936 | Conductive particulate force transducer A pressure transducer includes a base ply, a resistance ply disposed on the base ply and at least two spaced apart contacts juxtaposed in relation to the resistance ply whereby at least one of the contacts may be pressed against the surface of the resista... | 04/12/1994 |
| 5296837 | Stannous oxide force transducer and composition A pressure transducer includes a base ply, a resistance ply disposed on the base ply and at least two spaced apart conductors juxtaposed in relation to the resistance ply whereby at least one of the conductors may be pressed against the resistance ply. Th... | 03/22/1994 |
| 5079536 | Pressure transducer for musical instrument control A pressure-to-conductance transducer, which avoids dependency on pressure-sensitive properties of particulate materials which may be difficult to formulate in stable form, utilizes instead the principle of translating applied pressure into variation of ar... | 01/07/1992 |
| 4503416 | Graphite fiber tactile sensor A layer of carbon fiber materials sandwiched between two conductive layers provides a tactile feedback sensor which is particularly useful in manipulator systems for robotics and assembly automation.... | 03/05/1985 |
