Abstract:
A fume-extraction flap opening and closing mechanism comprising a vertically fixed beam (5) with a joke (6), provided on its upper end that is in pivot joint with one end of the tie rod (18), connected to the clamping ring (19) of the lower end of actuator (15), whereas the lower end of said beam is in pivot joint with one end of the lever (VV), the other end of which is in pivot joint with the end of actuator (15), whereas the upper end of the beam (5) holds the fixed part (8) of the lock (9), while its movable part (25) is connected, together with the end of actuator rod (22) of said actuator (15), with one end of movable connector (23), the other end of which is in pivot joint with holder (27) mounted to the frame (28) of the fume-extraction flap (3). Moreover, said mechanism is provided with at least one blocking cord (33) with one of its ends connected to the holder (29) mounted on said frame (28) of said fume-extraction flap (3), and the other end connected to the holder (30) of said frame (1) of said roof port (2).
Abstract:
A fume-extraction flap opening and closing mechanism of the invention comprises a rocking lever (7) with horizontal beam (6) in pivot joint with the element (4) of the frame (1) of the roof port (2) and two gas springs (10) and (15), the lower end of one gas spring (10) being in pivot joint with the other end of said horizontal beam (6) and its upper end being in pivot joint with the holder (12) mounted on the frame (13) of the fume-extraction flap (3), whereas the gas spring (15) is in pivot joint with the upper end of vertical beam (8) of the rocking lever (7) and its lower end is in pivot joint with the holder (17) mounted on the lower part of the frame (1), whereas the latter holder is connected also with one end of the tensioning spring (18), the other end of which is connected with the lower end of the (limiting) stop (19). Moreover, the middle part of the frame (13) of the fume-extraction flap (3) and the upper part of the frame (1) of the roof port (2) are provided with holders (22) and (24) connected with each other with at least one blocking cord (27).
Abstract:
Die Erfindung richtet sich auf einen hydraulischen Drehflügelantrieb mit einem Türschlieβer (1) mit einem exzentrisch gelagerten, eine kreisrunde Wälzkurve aufweisenden Ritzel (6), welches mti einer am Kolben (4) angeordneten Zahnstange (5) kämmt, wobei eine besondere Ausgestaltung der Wälzkurve und der Zähne (9) der Zahnstange (5) in Anpassung an eine Evolventenverzahnung des Ritzels (6) erfolgt. Zur Erzielung eines optimalen Bewegungsablaufes des Kolbens (4) im Gehäuse (2) des Türschliesssers (1) ist eine verbessernde Ausgestaltung der Schliessverzögerung vorgesehen.
Abstract:
A hinge assembly (A) includes a body (B) adapted for connecting a first structure. A resilient member (C) is in contact with the body, and a cam (E) is pivotally movable relative to the body and adapted for connection to a second structure. An actuating (D) member is positioned between the resilient member and the cam and biased by the resilient member into contact with the cam so that the actuating member exerts a force on the cam. The body defines a cylindrical bore (10) and the resilient member is a coil spring (C) positioned inside the bore. The actuating member is provided by a spherical ball member (D) and the cam defines a lobe portion (42) and a recessed dwell region (44). When in a first operative position, the lobe portion of the cam is engaged with the actuating member and in a second operative position the recessed dwell is engaged with the actuating member.
Abstract:
The invention relates to an automatic door, especially a sliding door, which is provided with a drive device (2) for opening and closing the door. A metal spring in the form of a flat spiral spring (10) is used as the mechanic energy storage device (9) which stores energy when the door is being closed and releases the stored energy for opening the door when the drive device (2) breaks down. Said spring is arranged around a drive shaft (6) and is under tension when the door is being closed. A rubber rope can be provided instead.
Abstract:
The invention realises a safety device (1) for automatic control for the opening of skylights comprising: a valve body (2) with which a thermosensitive bulb (4), a bomb (10) containing pressurised gas for feeding the actuator of the opening of the skylight and a solenoid (20) whose movable element (21) cooperates with blocking means (3) of said bulb (4), are connected. A piston (6) coupled in said valve body (2) is supplied with a pin (7) suitable for piercing the membrane (12) which intercepts the delivery mouth (11) of said bomb (10) in order to feed said actuator when said movable element (21) releases said bulb (4).
Abstract:
A pneumatic cylinder for actuating fume extraction valves in fume and heat extraction plants has a piston (2) that may be actuated from both sides with at least one working surface and that can be made to slide by pressurised air in a cylinder (1) with at least one working chamber (4), as well as an energy accumulator with regulating means. The regulating means can be controlled by control means to open or keep open the fume extraction valves. In order to obtain a compact pneumatic cylinder for a fume and heat extraction plant which is easy to install, a storage chamber in which air or pressurised air is stored as compressible pressure medium is provided as energy accumulator. The storage chamber is in communication with a compression surface (7) of the piston (2), at its side opposite to the working surface (7), so that pressure medium may flow between the storage chamber and the compression surface (7). The controller actuates a venting valve in communication with the working chamber (4) so that pressurised air may flow between the venting valve and the working chamber (4).
Abstract:
The invention relates to a sliding door system with at least one sliding door wings, preferably an automatic sliding door, with a running mechanism and drive and control means. Said drive and control means (2a, 2c, 2f, 2g, 28) are arranged in a receiving space (55) which is attached to the front of the running mechanism (1), the receiving space (55) and running mechanism (1) forming a substantially square, composite body. The lower edge of said body extends up to or engages over the upper edge of the wing, its overall vertical height is determined by the cross-section of the drive motor (2a) and/or by the overall vertical height of the running mechanism (1), and its overall horizontal width is at least twice as large as the overall vertical height. In a preferred embodiment, the running mechanism (1) takes the form of a box-shaped running mechanism section (63) with two vertical legs (63a, 63b) and a preferably square cross section. The one vertical leg (63a) is suspended by a suspension device (33) in a carrier member or carrier module (3) secured to the building, and connected to said carrier member by a clamping device (34). The second, front, vertical leg (63b) has a longitudinal groove (350) extending horizontally of a C or T-shaped form. The drive and control means (2a, 2c, 2f, 2g, 28) are held to be positioned in the groove in a variable manner either individually or in assemblies and are fastened by clamping pads (351) with clamping screws (352). Thus one obtains a sliding door system which has a particularly compact structure and a low overall height.
Abstract:
An operating device for a door comprises a door closing device (6, 8, 10) that exerts a first torque on a rotatably journalled shaft (8), said torque via rotation of the shaft in a door closing direction being transferred to a closing torque on the door. An electric motor driven power mechanism comprises a driven gear (22) mounted for rotating, for opening the door, the rotatably journalled shaft (8) in a door opening direction. This power mechanism comprises first means which at manual opening of the door admit free rotation of the shaft (8) with respect to the driven gear (22), and second means for admitting, at need, rotation of the driven gear (22) with respect to the shaft (8) in the door opening direction.
Abstract:
The invention describes an automatic sliding door with at least one panel (1, 1') and with an auxiliary drive unit (14). When the door closes normally, energy is supplied to the auxiliary drive where it is stored. In the event of a power failure and/or simultaneous interruption of the normal drive, this stored energy is then used to open the door. The auxiliary drive (14) is preferably a rubber element which is under tension when the door is closed. In the event of a power failure, a coupling (20) between the drive motor (9, 22) and an actuation device (19) is opened and the rubber element contracts, thus opening the door.