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:
Oct. 29, 2002
Filed:
Jul. 05, 2001
Applicant:
Inventors:
Jouni Hyvärinen, Helsinki, FI;
Tommi Naski, Helsinki, FI;
Assignee:
Evac International Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B 1/04 ;
U.S. Cl.
CPC ...
B65B 1/04 ;
Abstract
The invention relates to a method for transporting sewage in a vacuum system, which comprises a source ( ) of sewage, which through sewer piping ( ) is connected to a collecting or discharge space ( ) for sewage, and means ( ) for generating vacuum in the sewer piping ( ). In order to attain a reliably operating system the method employs a rotary lobe pump ( ) for generating vacuum, transported through the rotary lobe pump ( ) to the collecting or discharge space ( ) for sewage. The rotary lobe pump can also be used for emptying the collecting space.