Ventilation devices, in particular smoke and heat...

Details Ventilation devices, in particular smoke and heat... Ventilation devices, in particular smoke and heat...

F - Mech Eng,Light,Heat,Weapons

24

F

98/49

F24F 7/02 (2006.01) E04D 13/035 (2006.01) E05F 3/14 (2006.01)

Patent

CA 1048845

CANADIAN PATENT APPLICATION OF KJELL AKE BERTIL HOLMGREN and PER-ARNE LINDHOLM FOR VENTILATION DEVICES, IN PARTICULAR SMOKE AND HEAT VENTILATION DEVICES. Abstract of the Disclosure. Ventilation device with a vent pivotally mounted in a frame and restrained against opening forces by a locking mechanism and also connected to the frame by a hydraulic brake or damper de- signed to gradually reduce the opening speed of the vent at least towards the end of the opening movement.

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