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. 11, 2000
Filed:
Feb. 06, 1997
Applicant:
Inventors:
Michael John Andrews, Frimley, GB;
Christopher Bosher, Reading, GB;
Assignee:
Thames Water Utilities Limited, Reading, GB;
Primary Examiner:
Int. Cl.
CPC ...
B01F / ;
U.S. Cl.
CPC ...
3661511 ; 3661602 ; 3661741 ;
Abstract
The invention relates to a mixing apparatus for maintaining a pressure differential over varying feed rates by mixing a flow of sludge with a flocculant. The mixing apparatus includes a monitor for monitoring the pressure differential across the apparatus and a device for varying the size of an orifice in the apparatus through the sludge flows. The orifice size is dependent on the monitored pressure differential to maintain a desired differential pressure over a range of sludge feed rates.