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. 01, 2015
Filed:
Jan. 26, 2012
Hemant Gupta, Apple Valley, MN (US);
Ajay Singh, Apple Valley, MN (US);
Hemant Gupta, Apple Valley, MN (US);
Ajay Singh, Apple Valley, MN (US);
Donaldson Company, Inc., Minneapolis, MN (US);
Abstract
Disclosed herein are cylinder forming apparatuses for making nonwoven webs. In one embodiment, a cylinder forming apparatus has a first source configured to dispense a first fluid flow stream, and a second source configured to dispense a second fluid flow stream, wherein at least the first fluid flow stream comprises a fiber; an arcuate mixing partition downstream from the one or more sources, the arcuate mixing partition positioned between the first and second flow streams, the apparatus defining one or more openings that permit fluid communication between the two flow streams; and a cylindrical receiving region situated downstream from the sources and proximal to the first flow stream and designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream. Methods of using the apparatuses are also disclosed.