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. 20, 2001
Filed:
Jan. 17, 2001
Applicant:
Inventors:
Dennis R. Morgan, Howard, OH (US);
Edd D. Gryder, Evansville, WI (US);
Assignee:
Harvard Corporation, Evansville, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/700 ; B01D 2/707 ; B01D 2/950 ; B01D 3/500 ; B01D 2/714 ;
U.S. Cl.
CPC ...
B01D 3/700 ; B01D 2/707 ; B01D 2/950 ; B01D 3/500 ; B01D 2/714 ;
Abstract
The present invention typically involves the use of a compressed blocking area to assist in sealing a filter element and avoiding channeling in a wound fibrous tissue filtering system. It may involve the use of multiple, spaced, interstitial rings. It may involve the intentional wasting of a portion of the filter element to create a compressed blocking area. It may also involve the use of different heights of the rings and may include the use of compression and secondary tapers on the rings. The heights and spacing of the rings with respect to the other ring or rings may vary in a certain ratio.