Layered pressure transducer land method for making same
September 29, 2017. 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 3212043 3806471 Keyboard membrane switch having threshold force structure Metal oxide varistor pressure sensor and method Pressure-sensitive resistors Multi-function touch switch apparatus Pressure transducer Bounceless switch apparatus Electronic pressure sensitive force transducer Tactile sensors for robotic gripper and the like InventorApplicationNo. 939335 filed on 09/29/1997US Classes:338/99, Surfaces pressed together (e.g., compressible type)338/47, Force-actuated338/92, Resistance element adjustably short-circuited338/114, Deformable347/1INK JETExaminersPrimary: Gellner, Michael L.Assistant: Easthom, Karl D. Attorney, Agent or FirmForeign Patent References
International ClassH01C 010/10AbstractA variable resistance transducer responsive to an applied pressure including a smooth resistive layer on a flexible substrate and deposited thereon by printing or imaging technology, small points of nonconductive or semiconductive material, and resistive interdigitating fingers where in one finger is a wiper so that position on the resistive layer can be sensed.Other References
| |
