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:
Dec. 31, 1991
Filed:
Nov. 09, 1990
Applicant:
Inventor:
Leonard R Lefkowitz, Latham, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21F / ; B32B / ;
U.S. Cl.
CPC ...
428141 ; 162348 ; 162351 ; 162D / ; 428237 ; 428240 ; 428283 ; 428245 ; 428246 ; 428247 ; 428280 ; 428282 ; 428198 ; 428300 ; 428143 ; 428147 ; 428323 ; 428327 ; 428255 ; 428292 ; 428293 ; 428294 ; 428236 ; 428233 ; 428296 ; 428373 ; 428395 ; 428481 ;
Abstract
This invention is directed to an improved forming fabric for papermaking machines having a transverse nonwoven sheet contact layer adhered to a base fabric layer, the fluid flow passageways between adjacent structural members in the nonwoven sheet contact layer being smaller than the fluid flow passageways in the adjacent base fabric layer and in fluid communication with the nonwoven sheet contact surface or the nonwoven surface adjacent to the base fabric or both. The sheet contact layer may be comprised of fibers, filaments, monofilaments, open cell foam or the like.