Abstract: An automatic locking joint for use with a reconfigurable device to permit the device to be selectively reconfigurable between various configurations.

Abstract: A reconfigurable pet potty system that is selectively configurable between use and storage configurations. In the use configuration, the system is operable to be used as a toilet by a pet. In the storage configuration, the system is collapsed, with its footprint minimized, thereby facilitating transport and/or storage of the system. The system includes a plurality of different types of joints including a pivot joint that is operable to automatically lock the system in either of the configurations to prevent unintentional transformations of the system between the different configurations.