POSITIVE PRESSURE POOL CLEANER PROPULSION SUBSYSTEM

摘要

An automatic pool cleaner (120) configured to be powered by a supplied positive pressure water flow including an improved propulsion subsystem for propelling the cleaner body through a swimming pool along a substantially random travel path. The subsystem includes a hydraulic valve actuator (134) configured to use water pressure to switch a valve element (136) mounted for reciprocal linear movement from a default state (e.g., redirect travel state) to an active state (e.g., forward travel state) and to then restore the valve element (136) to the default state. The water pressure for controlling the actuator is selectively supplied by a direction controller (156) which responds to regular periodic occurrences and/or irregularly occurring events such as the interruption of cleaner body motion.