Abstract:
Disclosed is a door hinge device having a damping function. Owing to cooperation of an adjusting bolt, an upper holder and a shaft, the door hinge device can properly adjust a size of a gap defined between a fixed plate and a rotating plate when the size varies, for example, due to a discrepancy in specifications between a door and a doorframe. By the presence of a ball bearing, the door hinge device can minimize frictional force produced between component elements so that a lifetime of the door hinge device is lengthened and various springs can be used in the door hinge device irrespective of their elastic moduli.
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:
A locking mechanism (100) for use with a pneumatic cylinder/differential engine for a power-operated door including a locking rod (20), a plunger (24) associated with the locking rod (20) to cause extension and retraction of the locking rod (20) with respect to a door opening/closing gear (46), and a spring member (34) associated with the plunger (24) for maintaining the plunger (24) and the locking rod (20) in an extended position during a door closed position. An aperture (46a) is located through a sidewall portion of the gear hub (46b) which is capable of receiving an end (20a) of the locking rod (20) when the locking rod is in an extended position to lock the door in a door closed position. The invention also includes an emergency door opening mechanism enabling manual opening of the doors in case of an emergency.
Abstract:
Vorrichtung zum Betätigen eines Verschlußgliedes (10), das über ein Scharnier (12) schwenkbar mit einem Rand (18) einer zu verschließenden Öffnung (16) verbunden ist, mit einem zwischen dem Rand (18) und dem Verschlußglied (10) wirkenden expandierbaren Betätigungsglied, dadurch gekennzeichnet, daß das Betätigungsglied ein durch ein Druckmedium expandierbarer Balg (26) ist, der bei geschlossenem Verschlußglied (10) flach zwischen einem scharnierseitigen Bereich (30) dieses Verschlußgliedes und einem Flächenstück (28) des Randes (18) der Öffnung (16) liegt.
Abstract:
Türantrieb (1), insbesondere Drehtürantrieb, mit einer Antriebseinheit (2), die über eine Ausgangswelle (9) mit der Tür koppelbar und in einem Gehäuse (13) angeordnet ist, mit einem Motor (3), der mit der Antriebseinheit (2) in Antriebsverbindung steht und mit einem im Gehäuse (13) angeordneten Federkraftspeicher (4), der mit dem Motor (3) und der Antriebseinheit (2) gekoppelt ist, wobei eine Hydraulikpumpe (5) in Form einer Proportionalkolbenpumpe vorgesehen ist, die mit dem Motor (3) antriebsverbunden ist und die mit einem der Antriebseinheit (2) zugeordneten ersten Druckraum (6) und einem dem Federkraftspeicher (4) zugeordneten separaten zweiten Druckraum (7) in Hydraulikverbindung steht und dass eine Hydraulik-Dämpfungseinrichtung vorgesehen ist, die zwischen einem Aufnahmeraum für die Antriebseinheit (2) und einem dem zweiten Druckraum (7) benachbarten Zwischenraum des Gehäuses (13) angeordnet ist.
Abstract:
System zum Notöffnen der kraftfahrzeugtüren, besonders der Türen, die nach einem Unfall mechanisch verklemmt bleiben, besteht aus pneumatichem Kraftspeicher/pneumatischen Kraftspeichen (1) der/die als Ausführungselement(e) zur Öffnung der Tür(en) dient/dienen. Die Speisung des Kraftspeichers (1) erfolgt durch Pyropatrone (2), oder Pyropatronen (2, 3), die durch ein elektronisches Zündungsteuersystem (8) gesteuert sind. Das Signal der ersten Zündung der Pyropatrone (2) wird dem System (8) von einem Fühlersatz (5, 6, 7) gegeben, und das Signal der zweiten Zündung der Pyropatrone (3) wird durch einen Druckgeber (9) gesteuert. Die Rückstellung des Kraftspeiches (1) erfolgt durch ein Elektroventil (10).
Abstract:
The invention realizes an apparatus for smoke evacuation (1) comprising: a basement (2) which defines an opening (3) made in a building; a cover (4) co-operating in opening and closing actions with said basement (2); moving means (6) for the rotation of said cover (4); hooking means (7) suited to block said cover (4) in the closing position; a mechanical lock (8) suited to block said cover (4) in position of maximum opening; a release device (150) which through remote control means, releases said mechanical lock (8), before that said moving means (6) begin the closing of said cover (4).
Abstract:
A pneumatic device (10) comprises a piston (12) moveable along a cylinder (10). The piston has opposite ends (18, 26) defining a space (30) therebetween. The space is divided into two chambers (30a, 30b) by a housing (40) fixed relative to the cylinder and having a fluid flow control passageway (42) therethrough. The space (30) is filled with fluid, such as oil. The piston (12) is arranged such that movement thereof against a spring (16) causes the fluid to be displaced from one chamber (30a) of the space (30) to the other chamber (30b) through the passageway (42). The spring (16) is arranged to apply a return force to the piston (12) and the rate of return of the piston (12) is controlled by the return flow of fluid through the passageway (42). A pneumatic system (100) includes a device (10) connected between first and second members (58, 58a) of a building, such as a door and door frame. The pneumatic system comprises a source of compressed gas (C) for operating the device (10) to enable the device (10) to move the first member (58) relative to the second member (58a), i.e. to open and close the door. A switching device (72) controls the supply of compressed gas to the device (10).
Abstract:
A door operating assembly (1) for opening and closing vehicle doors at a constant force includes a frame (12), a teeter lever assembly (24) having a variable diameter cam on its edge surface pivotally mounted on the frame, a cylinder (20) operated by pressurized air mounted on the frame and including a rod (22) connected to the teeter lever assembly for rotating the teeter lever assembly, a spring (62) secured between the frame and a flexible connection member (66) which wraps around the variable diameter cam upon door movement providing a constant opening and closing force on the door, an accumulator (76) accepts pressurized air from the cylinder as the door opens and returns the pressurized air to the cylinder for closing the door.