Patent ID: 6460718
Filing Date: 2002-10-08
Classification: B65D,Y10S

Abstract:
A circular plastic cap for a top of a container, the cap having a longitudinal axis, the cap comprising:a. an end cover; b. at least one flap integrally formed with the end cover; c. a cylindrical skirt integrally coupled to the end cover at one end and having a second open end configured to receive the mouth of a receptacle; d. a thread coupled to an inner surface of the cylindrical skirt; and e. a circular sealing surface disposed inside the skirt and adjacent to the end cover, the sealing surface having a plurality of planar sealing surfaces, axially spaced apart, such that each sealing surface has a greater diameter the closer said each sealing surface is to an end of the skirt, wherein the thread is configured to engage a mating thread on the container and to compress the top of the container against only one of the plurality of planar sealing surfaces when the thread is tightened.