EP 0314201 A2 19890503 - Improvements relating to ventilators.
Title (en)
Improvements relating to ventilators.
Title (de)
Lüftungsklappe.
Title (fr)
Clapet d'aération.
Publication
Application
Priority
- EP 88120252 A 19871125
- GB 8628112 A 19861125
- GB 8723551 A 19871007
Abstract (en)
An opening flap ventilator for buildings has pneumatic opening springs (13) and electric motor-gear drive mechanism (14) operable to close the ventilation flap (11). The mechanism has an electrically energised clutch (54) interposed in the gear drive chain (24, 26, 28, 48, 46) (see Fig. 2). On de-energisation of the clutch (54), which may be automatic in response to the detection of a fire condition occuring, the ventilation flap (11) is automatically opened. The flap (11) is subsequently closed by operation of the motor which drives a winch pulley (20) for winding in a single operating cable (76) in opposite directions from a location between its ends. A fused fire prop is provided to prop the flap (11) open in the event of a fire as a safety measure.
IPC 1-7
IPC 8 full level
A62C 2/24 (2006.01)
CPC (source: EP)
A62C 2/247 (2013.01); E05F 1/006 (2013.01); E05F 1/1292 (2013.01); E05F 15/627 (2015.01); E05Y 2900/148 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0314201 A2 19890503; EP 0314201 A3 19900207; EP 0314201 B1 19930107; AT E84232 T1 19930115
DOCDB simple family (application)
EP 88120252 A 19871125; AT 88120252 T 19871125