Patent ID: 7753233
Filing Date: 2010-07-13
Classification: B65D

Abstract:
1. A spout unit comprising a spout having a cylindrical opening and a cap which screws into the opening of the spout to seal the opening, wherein the cap has a cylindrical cap body and a tamper-proof ring connected to a lower end portion of a skirt part of the cap body via an easy-to-break linking piece; wherein an easy-to-break portion, which breaks the ring by tension applied in the circumferential direction of the ring, is provided at least at a part of the tamper-proof ring, and a claw part is provided at least at one point of inner circumference surface of the tamper-proof ring; and wherein a ratchet, which is engageable with the claw part of the tamper-proof ring when rotating the cap of sealed condition in the unsealing direction, and in which the claw part is able to go over the ratchet when the cap is rotated in the sealing direction, is provided around the opening of the spout, and a tamper-proof ring support is provided at least at two points around the opening, in which the tamper-proof ring support is in partial contact with undersurface of the tamper-proof ring upon screwing the cap and has a height to maintain a position of the tamper-proof ring in horizontal direction at a constant level; wherein the spout has the opening, a base comprising one or more flanges which stretches horizontally at a lower part of the outer circumference surface of the opening, and a stopper which stretches horizontally at a higher position than the base of the outer circumference surface of the opening; wherein the ratchet is provided at an outer edge of the stopper and/or between the stopper and the base; and wherein the tamper-proof ring support is provided on an upper surface of a top flange of the one or more flanges.