US Patent 7140078 Cord stopper

The cord stopper (1) comprises a plug (10), and a socket (20) into which the plug (10) is inserted. The plug (10) comprises a plug body (11) having a first string passage hole (111) and one or more elastic leg pieces (12). The socket (20) has a second string passage hole (23) capable of being in communication with the first string passage hole (111) and a third string passage hole (24). The elastic leg pieces (12) hold the string inserted and passed through the third string passage hole (24) by themselves, or together with an inner surface of the socket (20). With this configuration, when the cord stopper (1) is fixed on the string (3), it is not necessary to form an edge section of the string into a loop form, and therefore can easily be fixed. Further as the string (3) is held with the elastic leg pieces (12), the holding state can easily be released, and the cord stopper (1) can easily be replaced with another one.