Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ramon Vizcaino SA
Original Assignee
Ramon Vizcaino SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ramon Vizcaino SAfiledCriticalRamon Vizcaino SA
Priority to ES1969144840UpriorityCriticalpatent/ES144840Y/en
Publication of ES144840UpublicationCriticalpatent/ES144840U/en
Application grantedgrantedCritical
Publication of ES144840YpublicationCriticalpatent/ES144840Y/en
Roof air extractor, characterized in that it comprises a cylindrical box, in its lower part in which the fan is housed and in whose free upper edge two free-swing gates are mounted around a diametral horizontal axis, the weight of said gates being such that they rise by effect of the air driven by the fan and fall to the edge of said cylindrical box, covering the exit opening, when the operation of said fan ceases, the box being surrounded by a cylindrical casing opened by both bases, separated by its lower edge of said box, leaving between them a through opening and endowed internally in its upper part, with a diametral bar that serves as a stop to the gates limiting its opening. (Machine-translation by Google Translate, not legally binding)
ES1969144840U1969-01-211969-01-21
CEILING AIR EXTRACTOR.
ExpiredES144840Y
(en)