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:
Oct. 20, 1987
Filed:
Oct. 07, 1986
Applicant:
Inventors:
Donald I Thornton, Warwick, RI (US);
Clarke A Rodman, East Providence, RI (US);
Assignee:
Allied Corp., Morristown, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55487 ; 55521 ; 55524 ; 210491 ; 2104935 ; 210508 ;
Abstract
A fluid filter element comprises a first filtering medium and a second filtering medium. The first filtering medium includes a nonwoven batt having a marginal edge portion circumscribing the main body portion of the batt in which the fibers are stiffened to provide a support and sealing structure. The second filtering medium includes a nonwoven batt which has been welded into a convoluted drape and which has a circumferential edge portion which provides a supported and sealing structure. The circumferential edge portion is sealed to the marginal edge portion when the fluid filter element is assembled.