US Patent 10141144 Self-powered switches and related methods

Self-powered switches include an externally accessible user input member, a switch housing attached to the user input member, a permanent magnet held in the switch housing, a magnet housing held in the switch housing that is attached to the user input member, the magnet housing having a spindle that extends laterally outward from opposing sides of an upper portion of the magnet housing. The spindle is attached to the switch housing. The switches also include a magnet assembly that includes a coil and a shaft extending a distance beyond the coil held in the switch housing. A least one of the magnet assembly and permanent magnet moves in response to movement of the user input member.