Michael F Cefaratti

US Patent:

20110044867, Feb 24, 2011

Filed:

Aug 24, 2009

Appl. No.:

12/546239

Inventors:

Michael J. Cefaratti - Willoughby OH, US

International Classification:

B01L 3/00

US Classification:

422550

Abstract:

Tube and cap assemblies for retaining an aliquot of fluid suitably for transferring such samples within a laboratory or between laboratories include a tube portion having at least one sidewall defining an open top. A flange extends outwardly from the open top and includes a top surface and a bottom surface. At least one channel is provided in the top surface of the flange, and an internal closed bottom extends from the at least one sidewall. The cap includes at least one peripheral wall, a hub inset from the at least one peripheral wall, and a plurality of ribs extending from the hub to the at least one peripheral wall to strengthen it against forces inward toward the hub. The cap further includes a neck having at least one bubble ring, a rim extending from the neck, and at least one sealing rib extending from the rim. In the assembly, where the cap is secured to the transfer tube, the neck extends into the open top of the transfer tube and the at least one bubble ring sealingly contacts the at least one sidewall, and the at least one sealing rib extends into the at least one channel.