Closure for sample vials
AssigneeBodenseewerk Perkin-Elmer & Co., GmbH
InventorsBruno Kolb, Dietrich Boege, Peter Pospisil, Hubert Riegger
Life of this patent
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Abstract
Closure for a sample vial utilized to introduce sample into a gas chromatograph in accordance with the head space method. The closure includes a flexible disc for closing the opening through the neck of the vial and overlying the margin of the neck about the vial opening. A cap having a central aperture defining an annular shoulder about the aperture overlies the disc. The cap has an annular depending skirt encompassing the disc for clamping about the neck of the vial to retain the disc and the cap on the vial. A portion of the closure is deformable for venting the vial to atmosphere in response to a pressure within the vial when the closure is applied thereto in excess of a predetermined pressure.
Claims4
A closure for a sample vial utilized for introducing a sample into a gas chromatograph in accordance with the head space method comprising:
- a flexible disc for closing the opening through the neck of a sample vial and overlying the margin of said neck about said opening;
- a cap having a central aperture defining an annular shoulder about said aperture for overlying said disc, said cap having an annular depending skirt encompassing said disc for clamping about said neck of said vial to retain said disc and said cap on said vial;
- and
- means carried by said cap enabling deformation of at least a part of the skirt portion thereof for venting said vial to atmosphere in response to a pressure, which is in excess of a predetermined pressure, within said vial when said closure is affixed thereto.
Dependencies are inferred from the claim text.