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.)
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/18—Fire preventing or extinguishing
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Fire protection device for single object, e.g. computer - comprises frame surrounding object for releasably supporting venetian shutters that surround object when fire detected by alarm unit
Vorrichtung fuer Kinematographenkabinen, bei welcher von einem Fusstritt aus das OEffnen und Schliessen der Schieber. vor den Projektionsoeffnungen und Schauloechern erfolgt und bei Entzuendung des Filmstreifens durch Verbrennen eines leicht entzuendlichen Fadens die Schieber geschlossen werden