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:
Nov. 27, 1990
Filed:
Aug. 18, 1989
Leslie S Rubin, Newton, MA (US);
Andrew C Harvey, Lexington, MA (US);
Foster-Miller, Inc., Waltham, MA (US);
Abstract
A liguid separation system includes a first separator unit, a second separator unit and means including a pump for flowing a liquid mixture from a system inlet to the inlet of the first separator unit. A first outlet of the first separator unit is connected to the inlet of the second separator unit, a second outlet of said second separator unit is connected to the inlet of the first separator unit, a first outlet of the second separator unit is connected to a system outlet, and feedback means is adapted to provide continuous flow during system operation of at least about 0.01 gallon per minute from a second outlet of the second separator unit to the inlet of the first separator unit. The first separator unit includes a separation chamber and a control chamber in communication with the separation chamber for receiving a light constituent of the mixture, and control means responsive to a predetermined quantity of the light constituent in the control chamber for discharging a portion of the light constituent from the first separator unit. The second separator unit includes housing structure, a bowl assembly mounted for rotation in the housing structure, and means for rotating the bowl assembly at a speed of at least one thousand rpm. The bowl assembly includes structure defining an inner chamber region in which a plurality of accelerating vanes are radially disposed in the inner chamber region, and structure defining an outer chamber region surrounding the inner chamber region in which a circumferential array of coalescing vanes ae disposed.