A childproof cap for use with a floating chlorine feeder in a swimming pool is disclosed has a two stage process required for removal of the cap onto the feeder. The cap and the top of the feeder have cooperating circumferential series of alternating wide and narrow beads located thereon, with the cap...http://www.google.fr/patents/US4828805?utm_source=gb-gplus-shareBrevet US4828805 - Child resistant top for a swimming pool chemical dispenser
Child resistant top for a swimming pool chemical dispenser
