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. 13, 2005
Filed:
Mar. 23, 2001
Roger Lacasse, Notre-Dame du Portage, CA;
Pierre Talbot, Notre-Dame du Portage, CA;
Henri Ouellet, Rivière-du-Loup, CA;
Bernard Juneau, Ste-Foy, CA;
Roger Lacasse, Notre-Dame du Portage, CA;
Pierre Talbot, Notre-Dame du Portage, CA;
Henri Ouellet, Rivière-du-Loup, CA;
Bernard Juneau, Ste-Foy, CA;
Premier Tech, , CA;
Abstract
A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passage for a flow of liquid between each two of the lamellar structures. Each passage has an inlet for receiving an inflow of liquid to be filtered and an outlet for discharging an outflow of filtered liquid. In each of the passages, an overflow dam wall following a sinuous path is obstructing the flow of liquid and retains particulate matter contained in the liquid. The filter unit is mounted vertically in a filter housing. The invention also concerns a prefilter comprising a filter unit as described above mounted vertically in a filter housing. Such prefilter can advantageously be used at the outlet of a septic tank