US Patent 7500715 Beach chair with simple locking means

A beach chair has a supporting means, a pivotal means fixed to the supporting means, a frame installed on the pivotal means and swayable with respect to the supporting means, a pair of armrest supports pivotally installed on the supporting means, and a cushion supported on the frame. The frame has a seat frame, a back frame fixed to the seat frame, and a leg frame pivotally fixed to the seat frame. An armrest support has a tube having a front end and a rear end, a pin support for pivotally installing the armrest support to the supporting means, a lock chamber, and an armrest installation surface; and a locking means having a handle, a pressing sleeve, and a pin.