Patent 9763523 was granted and assigned to Kids II, Inc. on September, 2017 by the United States Patent and Trademark Office.
A child containment device and a mattress support assembly for a child containment device providing a generally flat mattress configuration under load of a child supported thereon; a multi-paneled mattress for a child containment device allowing repositioning of mattress panels between an expanded state and a compact state, and wherein in the expanded state, structural couplings maintain the mattress in a generally flat configuration; and a chamfered corner arrangement for resisting curling of a mattress for a child containment device.