James D Meador

US Patent:

51696029, Dec 8, 1992

Filed:

Mar 7, 1990

Appl. No.:

7/490051

Inventors:

Wing S. Pang - Hacienda Heights CA
Thomas L. Kraft - Houston TX
James W. Meador - Houston TX

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

B65D 3900

US Classification:

422103

Abstract:

A resealable conduit is used to remove or add fluid to a closed system without coring or contamination of the fluid. The conduit can include funnel-shaped guide means, duck bill valve means and beveled tip puncturing means. A conduit resting angle of less than about five degrees can be achieved. A tip bevel angle between about ten and twenty degrees is preferred. The beveled tip can have a rotated or twisted blade surface extension. A blade surface extension formed with a ninety degree rotation of the blade surface is preferred. Alternately, the puncturing means can include a needle point or a flat cutting surface.