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. 22, 1991
Filed:
Nov. 30, 1989
Schleicher & Schuell GmbH, , DE;
Abstract
A disposable-filter holder comprises a shallow, box-shaped plastic housing of two pieces with intake and discharge stubs, a membrane-type filter being sandwiched between the two housing pieces which are joined together in a gas-tight and pressure-resistant manner. To reliably code the disposable-filter holder according to the filter characteristics, the disposable-filter holder comprises a colored coding plastic enveloping it in the outer radial zone. This color coding extends in at least one clearance in the first and/or in the second housing piece in geometrically locking manner and thereby does not project beyond the outer housing contour. The color coding only characterizes the disposable-filter holder and does not serve any sealing or locking function.