Multi-function touch switch apparatus
Patent 4268815 Issued on May 19, 1981. Estimated Expiration Date: 
November 26, 1999. 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.
November 26, 1999. 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 1926419 3626350 3917917 Keyboard arrangement having after-control signal detecting sensor in electronic musical instrument Patent #: 3960044 InventorsApplicationNo. 06/097610 filed on 11/26/1979US Classes:338/69, Musical instrument playing key actuated338/114, Deformable338/99Surfaces pressed together (e.g., compressible type)ExaminersPrimary: Albritton, C. L.Attorney, Agent or FirmInternational ClassesH01H 1/02 (20060101)H01H 13/702 (20060101) H01H 13/70 (20060101) H01H 1/029 (20060101) AbstractA multi-function touch switch apparatus has a first semiconductor composition layer disposed on top of a first conductor layer which is affixed to a first base member. A second semiconductor composition layer opposing the first semiconductor in spaced relationship thereto is disposed on a second conductor layer which is itself disposed on the bottom surface of a second support member. A third conductor layer is also disposed on the top surface of the second support member in opposing spaced-apart relationship to a fourth conductor layer disposed on the bottom surface of a third support member. The second and third support members and the affixed conductor layers and semiconductor layers are resiliently deformable in a transverse axis in response to a transverse touch force to thereby cause electrical contact between the second and third conductor layers to provide a closed switch and the first and second semiconductor layers to provide a closed switch in series with a pressure sensitive resistance. | |
