Patent ID: 6945389
Filing Date: 2005-09-20
Classification: A61L,Y10S

Abstract:
1. A contact lens container, comprising: a liquid container for receiving a cleaning and/or disinfecting liquid, a cap, and a sealing washer, wherein the liquid container has an opening end with an external thread, wherein the cap has a bottom, a side wall surrounding the bottom, and an internal thread on the side wall, wherein the bottom includes a radially circumferential groove near the side wall, wherein the sealing washer includes a circumferential sealing lip located at its peripheral edge and is made of a water-tight and gas-tight material, wherein the sealing washer is arranged against the bottom of the cap and extends to the side wall of the cap with the sealing lip resting against the side wall, so that there is a first water-tight seal between the sealing washer and the side wall and a cavity formed between the circumferential groove and the the sealing washer, wherein a second water-tight seal is formed between the opening end of the liquid container and the sealing washer when the cap is screwed on to the container through engagement of the external and internal threads, wherein the second water-tight seal can be broken by excess pressure in the container which forces a portion of the sealing washer to be deformed into the cavity and thereby let gas escape from the inside of the container through the threads out of the container, wherein the sealing lip has a shape that, when the sealing washer is deformed into the cavity by the excessive pressure, the sealing lip remains resting against the side wall to ensure the first water-tight seal between the sealing washer and the side wall of the cap.