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:
Jul. 11, 2000
Filed:
Dec. 13, 1996
Applicant:
Inventor:
Trevor George Sanders, Workingham, GB;
Assignee:
Thames Water Utilities Limited, Reading, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01B / ; A01B / ;
U.S. Cl.
CPC ...
1726845 ; 172197 ;
Abstract
The invention relates to a dresser for dressing particulate material, such as sand, in a slow sand filter of a water treatment works. The dresser includes a frame having transverse mixing members which are adapted to mix the material at or adjacent the surface of the particulate material.