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. 12, 1977
Filed:
Feb. 23, 1976
Heinrich Hemfort, Oelde, DT;
Westphalia Separator Aktiengesellschaft, Oelde Westphalia, DT;
Abstract
Self-cleaning, air-tight drum centrifuge (1a) having flange packing (4) between the stationary discharge conduit (2) for clarified liquid and the rotating neck (7a) of the drum 7. Leaking of air past packing 4, when solids are discharged from the drum in the intermittent self-cleaning step and a vacuum develops in the drum chamber 7b, is prevented by providing in the passageway (11a) between the drum chamber 7b and the discharge conduit 2, a siphon-like section 11. By properly dimensioning the siphon-like section, pressure of more than 1 atmosphere is maintained in the liquid contained in the siphon-like section, whereby such leaking is prevented.