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:
Aug. 31, 1999
Filed:
Mar. 11, 1998
Goran Sundholm, Tuusula, FI;
Other;
Abstract
The invention relates to a drive source for a fire fighting apparatus comprising spray heads (4), the drive source comprising a hydraulic accumulator (5), which comprises a container (9, 10) with extinguishing liquid and a pressure gas source (14) for driving the extinguishing liquid out of the container via a channel (29) to the spray heads. To prevent icing of extinguishing liquid in the container (9) and to make the droplet size small, the drive source is characterized in that the container (9) comprises in its lower part an outlet (28) for conducting extinguishing liquid via the channel (29) out to the spray heads (4) of the fire fighting apparatus, and the container (9) is connected to a liquid container (10) having a rising tube (31) in such a way that the rising tube is arranged to conduct extinguishing liquid to a place (33) in the channel (29), whereby the resistance to a liquid flow via the rising tube has been made stronger than the resistance of the channel (29) to the liquid flow, and that the liquid container is connected via a conduit (24, 25) to the pressure gas source (14) in order to obtain gas pressure from the pressure gas source, whereby a nonreturn valve (26) is arranged in the conduit to prevent liquid from flowing from the liquid container to the pressure gas source.