The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 1991
Filed:
Mar. 02, 1990
Gustav H Dreier, Stoughton, MA (US);
Norfolk Scientific, Inc., Norwood, MA (US);
Abstract
A sealable vented microscale centrifuge tube for centrifuging samples at substantially atmospheric pressure, thus avoiding the danger of backpressure in the stoppered centrifuge tube which may expel the cap or shatter the tube during centrifugation. The device of the invention includes a container having a wall defining a cavity capable of holding a sample; a flange surrounding the cavity opening and possessing a hole; and a shell which surrounds the flange and which extends above and below its plane, and is attached to the flange rim, thus supporting the container within the shell. It additionally includes a removable cap which seals the cavity of the container. When the cavity of the container is sealed by the removable cap, air which would otherwise be compressed in the container is vented through the hole through the flange of the container and into the space between the container wall and the supporting shell.