Application of checking, fault-correcting, or safety devices in elevators

BPERFORMING OPERATIONS TRANSPORTING B66Lifting technology B66BELEVATORS ESCALATORS OR MOVING WALKWAYS

B66B5/00Application of checking, fault-correcting, or safety devices in elevators

B66B5/0006Monitoring devices or performance analysers B66B5/0012Devices monitoring the users of the elevator system B66B5/0018Devices monitoring the operating condition of the elevator system B66B5/0025for maintenance or repair B66B5/0031for safety reasons B66B5/0037Performance analysers B66B5/0043Devices enhancing safety during maintenance B66B5/005Safety of maintenance personnel B66B5/0056by preventing crushing B66B5/0062by devices, being operable or not, mounted on the elevator car B66B5/0068by activating the safety brakes when the elevator car exceeds a certain upper or lower position in the elevator shaft B66B5/0075by anchoring the elevator car or counterweight B66B5/0081by preventing falling by means of safety fences or handrails, being operable or not, mounted on top of the elevator car B66B5/0087Devices facilitating maintenance, repair or inspection tasks B66B5/0093Testing of safety devices B66B5/02responsive to abnormal operating conditions B66B5/021the abnormal operating conditions being independent of the system B66B5/022where the abnormal operating condition is caused by a natural event B66B5/024where the abnormal operating condition is caused by an accident B66B5/025where the abnormal operating condition is caused by human behaviour or misbehaviour B66B5/027to permit passengers to leave an elevator car in case of failure B66B5/028Safety devices separate from control system in case of power failure, for hydraulical lifts B66B5/04for detecting excessive speed B66B5/042with characteristic location of the governor cable B66B5/044Overspeed governors B66B5/046of the pendulum or rocker arm type B66B5/048Testing of overspeed governor B66B5/06electrical B66B5/08for preventing overwinding B66B5/10electrical B66B5/12in case of rope or cable slack B66B5/125electrical B66B5/14in case of excessive loads B66B5/145electrical B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well B66B5/18and applying frictional retarding forces B66B5/185by acting on main ropes or main cables B66B5/20by means of rotatable eccentrically-mounted members B66B5/22by means of linearly-movable wedges B66B5/24by acting on guide ropes or cables B66B5/26Positively-acting devices B66B5/28Buffer-stops for cars, cages, or skips B66B5/282Structure thereof B66B5/284mounted on cars or counterweights B66B5/286between two cars or two counterweights B66B5/288with maintenance features