Container closure having automatic opening means

Details Container closure having automatic opening means Container closure having automatic opening means

A - Human Necessities

61

M

210/49, 165/61

A61M 15/00 (2006.01) A61J 1/00 (2006.01) A61M 16/16 (2006.01) B65D 81/32 (2006.01) A61M 16/06 (2006.01) A61M 16/20 (2006.01)

Patent

CA 1103148

ABSTRACT A screw top closure for a container opening defining a helically threaded neck, and a rotatable screw top positioned to permit rotation by the screw top between outward and inward positions on the neck. A sealing partition is positioned across the opening of the neck. An aperture is defined in the sealing partition, the aperture being positioned in off-center relation to the rotational axis of the screw top. A sealing cup member is positioned across the aperture, with a rupturable seal, fac- ing the screw top. A projection is defined on the side of the screw top facing the partition, being positioned to be longitu- dinally spaced from the sealing cap member when the screw top is in the outward position, and to engage the sealing cap mem- ber when the screw top is rotationally advanced to its inward position. Accordingly, the seal between the cap member and the partition may be ruptured in aseptic manner by the projection, to open the aperture.

297228

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