Patent ID: 7950501

Claim:
A stopper for preventing movement of a bag equipped with casters comprising: a base mounted on the bottom surface of the bag; a swingable member having one end portion rotatably connected to the base, and having the other end portion capable of being manipulated so as to swing the swingable member between a housing position where the other end portion is positioned close to the base and an engagement position for engaging the other end portion with the ground; a first link having one end portion rotatably connected to the swingable member, and having the other end portion rotatably and slidably connected to the base and slidable along the bottom surface of the base in response to the swinging movement of the swingable member; and a second link having one end portion rotatably connected to the other end portion of the first link, and constructed so as to be slidable with the other end portion of the first link along the bottom surface of the base, the second link having an engaging portion; the base having an engaged portion to be engaged with the engaging portion to thereby maintain the swingable member in the engagement position; the other end portion of the second link being manipulatable to release the engagement between the engaging portion and the engaged portion and being disposed in an advanced position enabling an engagement release manipulation when the swingable member is in the engagement position; and when the swingable member is in the housing position, the other end portion of the second link being disposed in a retracted position so as to be hidden by the base, and the swingable member and the first link being disposed along the bottom surface of the base.