Cap for the filler neck of liquid containers

摘要

A self-closing cap for the filler neck of liquid containers, consisting of a closure ring having an annular seal, said ring being attachable to said filler neck, and of a spring-biased closure flap swivel-mounted on said closure ring and provided with a seal, wherein said closure flap is swivel-mounted with two bearing arms to a shaft supported by a bearing block inserted in a recess on the housing ring and wherein a locking spring seated on said shaft of said bearing block biases said closure flap, with one on end of said spring engaging said closure flap or a bearing arm and the other end engaging said bearing block.