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. 20, 1994
Filed:
Nov. 16, 1992
John R Costello, Jr, Tecumseh, MI (US);
Leonard F Knoedler, Ann Arbor, MI (US);
Monty E Vincent, Ann Arbor, MI (US);
Mary K Boomus, Chelsea, MI (US);
Other;
Abstract
A filter assembly (10) includes a hollow housing (12) having a length and first and second ends (14,16). A membrane (22) contained within and extending along the length of the housing (12) separates the housing (12) into first and second chambers (24,26). An inlet (32) is proximate to the first end (14) and is in fluid communication with the first chamber (24). An outlet (34) is proximate to the second end (16) and is in fluid communication with the second chamber (26) for allowing a flow of fluid from the second chamber (26). The membrane (22) is air permeable when dry and air impermeable when wet whereby a wetting fluid entering the first chamber (24) at the first end of the housing (12) forces air from the first and second chambers (24,26) along the length of the membrane (22) and out of the outlet (34) as the fluid wets the membrane (22) thereby de-airing the first and second chambers (24,26) from one end to the other end along the length of the membrane (22) on both sides thereof.