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:
Jan. 29, 2002
Filed:
Jan. 26, 2000
Michael Spitzer, Korschenbroich, DE;
W. Schlafhorst AG & Co., , DE;
Abstract
A filter device ( ) for a cheese-producing textile machine ( ) having a plurality of pneumatic devices, e.g., open-end spinning devices ( ), service units ( ), etc. The filter device ( ) has negative pressure filter chambers ( ′), each divided via a closure mechanism ( ′) into a main filter chamber ( ′) and a reserve filter chamber ( ′), and an intermediate chamber ( ), to which a negative pressure source ( ) is connected. Closable suction openings ( ′) and ( ′) in the main and reserve filter chambers, respectively, are connected with the intermediate chamber. The suction openings ( ′) and ( ′) are equipped with respective closure elements ( ) and ( ′) which are functionally coupled such that, upon closure of one suction opening ( or ′), the other suction opening ( or ′) is automatically opened.