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:
Dec. 07, 2010
Filed:
Jan. 23, 2006
Gunnar Lindroos, Helsinki, FI;
Gunnar Lindroos, Helsinki, FI;
Evac International Oy, , FI;
Abstract
Vacuum sewer system comprising a source of sewage (), sewer piping (), a discharge valve () between the source of sewage and the sewer piping, means () for generating partial vacuum in the sewer piping, and a control means for controlling the operation of the discharge valve. The control means comprises a control mechanism () with a body part defining a series of chambers including a first end chamber and a second end chamber, wherein the first end chambers is provided with an activating means (). The body part () is provided with a first port () for communication with a source of vacuum (), a second port () for communication with the discharge valve () and a third port () for communication with an aeration means. The activating means () is in connection with a first valve means operating in cooperation with a second valve means, which is displaceable between a first position, providing communication between the second port () and the third port (), and a second position, closing the communication between the second port () and the third port ().