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:
Feb. 07, 2006
Filed:
Sep. 19, 2001
Helmut Bacher, A-4490 St. Florian, AT;
Helmuth Schulz, A-4490 St. Florian, AT;
Georg Wendelin, A-4033 Linz, AT;
Helmut Bacher, A-4490 St. Florian, AT;
Helmuth Schulz, A-4490 St. Florian, AT;
Georg Wendelin, A-4033 Linz, AT;
Other;
Abstract
An apparatus for filtering viscous material, in particular thermoplastic synthetic plastic material, comprises a screw (), which presses the material to be cleaned from an upstream conduit () of a supply housing () towards a band-shaped screen (). The screen () is abutted on its downstream side by a perforated plate () against the pressure of the supplied material. The band-shaped screen () can be displaced for replacement of a soiled band section by a fresh band section. For facilitating this displacement a device is provided, which comprises a closure means () that is disposed on the upstream side of the screen (), by which closure means the upstream conduit () for the material to be filtered can be closed at least substantially. On the upstream side of this closure means () a storage space () for material to be cleaned is connected to the upstream conduit (). Within this storage space () a piston () is sealingly guided, which is reciprocable by a drive means and closes in its projected position the storage space () against the upstream conduit ().