Penetrable cap
First Claim
Patent Images
1. A penetrable screw cap comprising:
- a generally cylindrical core structure configured to be screwed onto an open-ended vessel, the core structure being a molded plastic formed to have an opening extending therethrough; and
first and second disk-shaped, frangible seals affixed to the core structure, wherein the second seal is being axially aligned with and positioned below the first seal in a spaced-apart relationship, and,wherein the second seal is constructed and arranged to provide a barrier to the passage of a fluid through the opening formed in the core structure,wherein the cap is capable of being penetrated by a plastic pipette tip, andwherein the first and second seals are constructed and arranged so that air passageways are formed between a plastic pipette tip and the first and second seals when the pipette tip penetrates the first and second seals, thereby permitting air to be vented through the cap.
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Abstract
A cap having a core structure dimensioned to receive a pipette therethrough. The cap includes two axially aligned frangible seals that are affixed to the core structure in a spaced-apart relationship. The frangible seals are constructed so that air passageways are formed between the frangible seals and a pipette tip when the pipette tip penetrates the frangible seals. The cap optionally includes a filter interposed between the first and second frangible seals.
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Citations
57 Claims
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1. A penetrable screw cap comprising:
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a generally cylindrical core structure configured to be screwed onto an open-ended vessel, the core structure being a molded plastic formed to have an opening extending therethrough; and first and second disk-shaped, frangible seals affixed to the core structure, wherein the second seal is being axially aligned with and positioned below the first seal in a spaced-apart relationship, and, wherein the second seal is constructed and arranged to provide a barrier to the passage of a fluid through the opening formed in the core structure, wherein the cap is capable of being penetrated by a plastic pipette tip, and wherein the first and second seals are constructed and arranged so that air passageways are formed between a plastic pipette tip and the first and second seals when the pipette tip penetrates the first and second seals, thereby permitting air to be vented through the cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification