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. 26, 2013
Filed:
Dec. 17, 2007
Vesa Lappalainen, Vantaa, FI;
Vesa Lappalainen, Vantaa, FI;
Evac International Oy, Espoo, FI;
Abstract
The invention relates to a vacuum sewage system, which includes a sanitary unit, such as a toilet unit, vacuum sewer piping () connected to the sanitary unit, a discharge valve between the sanitary unit and the vacuum sewer piping, and a vacuum generating device for generating vacuum in the vacuum sewer piping. The system comprises an on-line separator device () in the vacuum sewer piping () and a first pump means () and a second pump means () connected in parallel with the on-line separator device (). The first pump means () is a vacuum pump for generating vacuum in the vacuum sewer piping () and for evacuating air from the sewage flow flowing into the on-line separator device () and the second pump means () is arranged for pumping mainly sewage from the sewage flow flowing into the on-line separator device ().