US Patent 8991412 Portable folding shelter

A portable and foldable shelter has a canopy frame with an arm hub adjacent to a top end of a canopy pole, and a sliding collar on the pole. The canopy frame also includes a plurality of arms with each arm having an outer arm segment attached to an inner arm segment via an arm hinge joint. The arm hinge joint may include a slider movable into a locking position where the inner and outer arm segments are rigidly fixed in a straight locked-out. A flexible cover is attached to or supported on canopy frame. The portable shelter is lightweight, highly compact when folded, easy to use, and easy carry.