Drum counter for utility meters

摘要

The counter has a worm gear and a worm wheel (20) including teeth (21). The worm gear and the worm wheel are die cast from plastic. The edges (22) of the teeth are parallel to the edges of a spiral auger of the worm gear to provide a broad contact surface for overlapping of the edges of the teeth and the spiral auger. The teeth edges intermesh with the worm gear during forward movement of a utility meter.