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:
Jul. 07, 1981
Filed:
Dec. 06, 1979
Applicant:
Inventor:
John C Hoagland, Longmeadow, MA (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ; F16L / ;
U.S. Cl.
CPC ...
210186 ; 210351 ; 210447 ; 210450 ; 425199 ; 4253 / ; 285 41 ; 285 95 ; 285351 ;
Abstract
A filter assembly for extruded polymer melts is described which comprises a filter having retained between inlet and outlet manifolds with a contact pressure that can be varied. A primary seal device between the manifold and the housing is located in a rabbet in either the housing or the manifold at the contact plane. This seal responds to pressure from the polymer melt flow by deforming and increasing the contact pressure between the manifold and the housing. Thus the greater the pressure at which the melt is extruded, the tighter is the seal.