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:
Apr. 16, 1985
Filed:
Mar. 19, 1984
Applicant:
Inventor:
Friedrich Lambertus, Stuttgart, DE;
Assignee:
Werner & Pfleiderer, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29F / ; B01D / ;
U.S. Cl.
CPC ...
425199 ; 210387 ; 2104931 ; 4253 / ;
Abstract
A cassette filter for molten plastic comprising a filter screen movable transversely of the melt flow and enclosed between plates in a filter casing of an extruder. The superimposed plates are engaged in a guide passage and the inlet and outlet of the filter casing is sealed by cooling of the melt. The surface of the filter screen is clamped between a tooth-shaped surface of a plate and a cover member which interfits in the profile.