Abstract:
An actuator comprising a fluid-actuated jack, which can be activated by a gas contained under pressure inside a bottle (14); a percussion-type piercing element (15), which can move between a passive position for closing the bottle and an active position for piercing the bottle (14) in order to activate the jack; a mechanical flow control device, which comprises a sensor (32) for detecting hot gases and smoke and a flow control element (27) that is controlled by the sensor and is functionally associated with the piercing element (15) so as to allow the movement of the piercing element from the passive position to the active position when the sensor detects the presence of the hot gases and smoke. The jack comprises a cylinder (2) that is closed by a lower cap (4) that has a connecting element for supporting the bottle (14) inside the cylinder (2), and seats (31, 23, 12) for accommodating the sensor (32), the flow control element (27) and the piercing element (15).
Abstract:
An actuator comprising a fluid-actuated jack, which can be activated by a gas contained under pressure inside a bottle (14); a percussion-type piercing element (15), which can move between a passive position for closing the bottle and an active position for piercing the bottle (14) in order to activate the jack; a mechanical flow control device, which comprises a sensor (32) for detecting hot gases and smoke and a flow control element (27) that is controlled by the sensor and is functionally associated with the piercing element (15) so as to allow the movement of the piercing element from the passive position to the active position when the sensor detects the presence of the hot gases and smoke. The jack comprises a cylinder (2) that is closed by a lower cap (4) that has a connecting element for supporting the bottle (14) inside the cylinder (2), and seats (31, 23, 12) for accommodating the sensor (32), the flow control element (27) and the piercing element (15).
Abstract:
A hot gas and fume venting device comprising a shutter (1) that is pivoted about a horizontal axis (A) to close a skylight-like opening (3), including a supporting beam (4), which is fixed across the opening (3) at right angles to the pivoting axis, and a telescopic jack (6), in which the outer cylinder is articulated to the beam (4) about an axis that lies parallel to the pivoting axis (A) and the innermost cylinder is articulately coupled to a point of the shutter; the jack (6) is positively extendable by means of compressed gas contained in a bottle (39) that is controlled by a smoke and/or hot gas sensor (40) to rotate the shutter (1) from a closed position into an open position, and the jack (6) is provided with a hydraulic shock absorber to allow the controlled descent of the shutter beyond the 90 o opening position until it reaches the stop position.