Tactile effect switch and keyboard using such a switch
Patent 5172114 Issued on December 15, 1992. Estimated Expiration Date: 
March 6, 2011. 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.
March 6, 2011. 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 ReferencesElastomeric switch control device Stabilized molded rubber keyboards Elastic member for supporting a key top in a push button switch construction Patent #: 4814561 InventorsAssigneeApplicationNo. 665045 filed on 03/06/1991US Classes:341/27, With audible or tactile indicator200/5R, Multiple switch200/342, Including lost motion connection200/345, Cap/stem and stem/housing details200/512, Membrane type200/521, Including tactile feedback mechanism341/34Pressure sensitive actuationExaminersPrimary: Yusko, Donald J.Assistant: Krakovsky, Michael Attorney, Agent or FirmForeign Patent References
International ClassesH01H 009/00H01H 013/26 Foreign Application Priority Data1990-03-08 FRAbstractIn the tactile effect switch and a keyboard using such a switch, the tactile effect is obtained by combining a snap acting switch and the deformation of a stud, axially deformable under compression, which is integrally formed on a membrane made from a resilient material disposed on a support plate and which provides a resilient connection between a key and the switch in the manner of a pusher. | |
