ApplicationNo. 06/284230 filed on 07/17/1981
US Classes:215/307Receptacle interior communicable with exterior with closure in applied position (e.g., vented)
ExaminersPrimary: Norton, Donald F.
Attorney, Agent or Firm
International ClassesB65D 41/34 (20060101)
B65D 41/04 (20060101)
B65D 51/16 (20060101)
AbstractA thermoplastic closure suitable for fitment to a threaded container neck is disclosed. The closure has a top wall with an annular sidewall depending therefrom. To provide a gas-tight seal between the closure and the container, there is provided a gas-tight sealing system above the closure thread. About the inside surface of the annular sidewall is an extended closure thread which, due to its extent, requires the user to make two turning motions to achieve removal of the closure from the container. By requiring two turning motions, sufficient time is provided for venting of any pressurized gas from the container to the atmosphere. This venting can be facilitated by the utilization of any conventional venting means.