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:
Apr. 30, 1991
Filed:
Nov. 15, 1988
Applicant:
Inventors:
Prakash T Palepu, Cleveland, OH (US);
Cheng-Kuang Wu, Richmond Heights, OH (US);
Robert J Adler, Shaker Heights, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03D / ; B01D / ;
U.S. Cl.
CPC ...
209155 ; 209209 ; 210258 ; 210513 ; 210800 ;
Abstract
Apparatus and methods are disclosed for separating or fractionating particles of differing sedimentation rates in a fluid. For fractionation, the mixture is introduced into a tube and subjected to a cyclic sequence of alternating axial flows, with optional waiting periods of zero flow. The velocities and time periods of the individual flows in the cycle are adjusted so that particles of greater and lesser sedimentation rates tend to be driven in opposite directions. At the end of each cycle there is a step of resuspension of sedimented particles without axial dispersion and independent of axial flows.