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:
Sep. 29, 1987
Filed:
Jun. 05, 1986
Alan J Gordon, Liverpool, GB;
Donald G Billington, Stoke on Trent, GB;
Shandon Southern Products Limited, Runcorn, GB;
Abstract
Centrifugation apparatus comprising a sample chamber, a deposit-receiving surface such as a slide and a filter card having an aperture adapted to define on that surface a deposition area communicating with the sample chamber is characterized by the feature that liquid flow paths in the filter card from the perimeter of the aperture are selectively restricted in cross section so as to promote constant velocity flow of liquid, from the sample chamber into the card, in directions substantially normal to all points on the periphery of the aperture. This promotes uniform deposition of solids on the deposit-receiving surface throughout the deposition area, to facilitate inspection of the deposit and, particularly, automated optical scanning of the deposit. The cross sectional restrictions may be accomplished by local removal of filter card material; by local compression of the filter card; or by local impregnation of the card material with an occlusive agent.