Abstract: A safety switch apparatus includes one or more switching elements in association with an operating head. A housing and a cover are provided for maintaining the switching element(s) therein. A switch cavity is formed between the housing and the cover to maintain the switching element(s) in the switch cavity between the housing and the cover. A plurality of cover-housing threads are provided by the housing and the cover in association with a plunger extending between the switch cavity and the operating head, thereby providing a weather-sealed and explosion-proof barrier for protecting the switching element(s).

Abstract: A cable actuated emergency stop system is disclosed, which includes a housing structure within which a single shaft assembly can be maintained for engaging a cable and a single shaft assembly that can be attached to the cable, wherein the single shaft assembly comprises only one shaft that is slideably disposed within the housing structure and movable relative to the housing structure a long a single path in a direction parallel to an axial centerline of the shaft in response to a force exerted by the cable attached to at least one end of the shaft. The system is configured in the context of a single directional cable actuated emergency stop device which includes one operating shaft exiting the housing structure.