SEALED SWITCH ASSEMBLY FOR USE WITH A ROTTABLE VALVE SHAFT

摘要

A gas burner valve switch having an annular rotor engaging the valve shaft f or rotation with the shaft. An annular resilient seal in a groove on the rotor flange seals against the underside of the casing cover to prevent entry of foreign matter. The ro tor is journalled for rotation in the housing which has spaced terminals which connect, via in sulation displacement, with a pair of continuous spaced electrical leads laid in chan nels and extending through the housing. In one embodiment the rotor has a cam which actuates a moveable blade arm attached to one of the pair of terminals to effect closing against the other terminals. In another embodiment an annular wiper ring acts as a shorting bar between t he terminal for switching upon user rotation of the rotor.