Patent ID: 7348513
Filing Date: 2008-03-25
Classification: H01H

Abstract:
1. A membrane switch, comprising: an upper membrane, formed with an upper elastic tongue and an upper hollow portion along a periphery of said upper elastic tongue, said upper membrane printed with a first conductive trace on a top surface thereof, said first conductive trace extending to said upper elastic tongue; and a lower membrane, formed with a lower elastic tongue corresponding to said upper elastic tongue and a lower hollow portion along a periphery of said lower elastic tongue, said lower membrane is printed with a second conductive trace on a bottom surface thereof, said second conductive trace extends to said lower elastic tongue, wherein said lower elastic tongue passes through said upper hollow portion of said upper membrane and is elastically extended above said upper elastic tongue, whereby when said lower membrane is depressed, said second conductive trace of said lower membrane contacts said first conductive trace of said upper membrane.