Abstract:
Portable RFID device (300), usable in an access and/or presence control system, comprising a radio frequency transmitter module (305) connected to an accelerometer (315) that is configured to detect movements of the portable RFID device (300), wherein the portable RFID device (300) is configured to be powered by a battery (325), wherein the accelerometer (315) is configured to send to the radio frequency transmitter module (305) a value of detected acceleration of the portable RFID device (300), and the radio frequency transmitter module (305) is configured to recognize when said value of detected acceleration is higher than a minimum threshold and, in this case, to activate for a transmission period a transmission of a radio frequency signal including an identification code.
Abstract:
Portable RFID device (300), usable in an access and/or presence control system, comprising a radio frequency transmitter module (305) connected to an accelerometer (315) that is configured to detect movements of the portable RFID device (300), wherein the portable RFID device (300) is configured to be powered by a battery (325), wherein the accelerometer (315) is configured to send to the radio frequency transmitter module (305) a value of detected acceleration of the portable RFID device (300), and the radio frequency transmitter module (305) is configured to recognize when said value of detected acceleration is higher than a minimum threshold and, in this case, to activate for a transmission period a transmission of a radio frequency signal including an identification code.
Abstract:
Transmission system with three coaxial concentric shafts for wind driven rotors with vertical axis, characterized by very high compactness and rigidity; it comprises a first outer, blade-carrying, shaft (3) which transmits the rotary motion to the third inner shaft (5) connected to an electric generator which is also coaxial; a second shaft (4) interposed between the two outer (3) and inner (5) rotary shafts and fixed integral with the supporting frame (8) of the eolic machine. The system has a low rolling friction by virtue of the action of counter springs counteracting the weight of the wind driven rotor.
Abstract:
Portable RFID device (300), usable in an access and/or presence control system, comprising a radio frequency transmitter module (305) connected to an accelerometer (315) that is configured to detect movements of the portable RFID device (300), wherein the portable RFID device (300) is configured to be powered by a battery (325), wherein the accelerometer (315) is configured to send to the radio frequency transmitter module (305) a value of detected acceleration of the portable RFID device (300), and the radio frequency transmitter module (305) is configured to recognize when said value of detected acceleration is higher than a minimum threshold and, in this case, to activate for a transmission period a transmission of a radio frequency signal including an identification code
Abstract:
A powered drive (10) for moving gates and barriers comprises a mechanical motion transmission (12) along which are a drive shaft (18) and a corresponding driven shaft (19). Between the driven and drive shafts is a mechanism (20) which by operating setting means (25) allows immediate conversion of the coupling between the drive and driven shafts into a coupling with reversible or irreversible motion transmission depending on need.
Abstract:
A linear actuator for gates, doors or similar has an actuator arm (1) which is articulated to a support (3) around a vertical axis (15) and be raisable angularly around a horizontal inclination axis (16). The actuator arm (1) has a screw (7) which is operated by an electric motor (11) and a running nutscrew (8) articulated to the gate wing (5) by means of a leadnut holder (18) in which the nutscrew (8) is housed in a manner turning around an axis horizontal and transversal to the actuator arm (1). The leadnut holder (18) has a vertical lower articulation pivot (20) which engages from above in a turning manner in a bush (22) fastened to the wing (5). In an emergency the actuator is disengaged from the gate wing (5) by raising the actuator arm (1) angularly around its inclination axis (16) and extracting upward the articulation pivot (20) of the leadnut holder (18) from the bush (22).
Abstract:
The subject of the invention is an actuator for gates, doors and the like, with at least one wing. The actuating motor (14) and the associated motor reduction unit (15) are housed inside as half-arm (2) which turns on a fixed support (9) in an oscillating way about a substantially vertical swinging axis (10). Advantageously, the electric motor (14) operates a manoeuvering worm screw (12) which is carried by said half-arm (2) and engages a corresponding helical gear (13) coaxial with the swinging axis (10) and is fastened to the fixed support of the half-arm (2) by means of a torque-limiting device which prevents excessive stresses on the actuator as a result of external forces and also makes it possible to release the helical gear for manual emergency actuation of the wing.
Abstract:
The subject of the invention is an actuator for gates, doors and the like, with at least one wing. The actuating motor (14) and the associated motor reduction unit (15) are housed inside as half-arm (2) which turns on a fixed support (9) in an oscillating way about a substantially vertical swinging axis (10). Advantageously, the electric motor (14) operates a manoeuvering worm screw (12) which is carried by said half-arm (2) and engages a corresponding helical gear (13) coaxial with the swinging axis (10) and is fastened to the fixed support of the half-arm (2) by means of a torque-limiting device which prevents excessive stresses on the actuator as a result of external forces and also makes it possible to release the helical gear for manual emergency actuation of the wing.