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. 21, 2003
Filed:
Mar. 22, 2002
Goran Sundholm, Tuusula, FI;
Abstract
The invention relates to an installation for extinguishing fire in a unit, preferably a train with at least one railway carriage, or a tunnel, the installation comprising several spray heads ( ) whereof a number that is smaller than the total number of spray heads can be activated according to the location of the fire in the unit, and a drive source ( ) for delivering extinguishing medium through a pipe system ( ) to the activated spray heads. In order to provide a powerful and increased delivery of extinguishing medium from the active spray heads in such a case that only some of the spray heads in the installation are released, the installation is characterized by the drive source comprising a pump unit including a pump ( ) in order to provide a pumping pressure for pumping extinguishing medium into the activated spray head/heads, the pump unit comprising a control unit ( ) arranged to increase the extinguish medium flow of the pump unit when the number of releasing spray heads increases in such a way that the effect of the pump unit is at least mainly kept constant.