Abstract: The present invention provides an anti-entrapment device for an aerial lift having a basket or cage. The anti-entrapment device comprises an elongate housing; two or more sensors housed within said elongate housing and a switch activation device coupled to the elongate housing. At least one of said two or more sensors is positioned proximate an end of said elongate housing. Said switch activation device is arranged at an angle to the orientation of said sensor(s) positioned proximate the end of said elongate housing. The sensors are arranged to provide a detection zone and to detect obstacles within the detection zone. The sensors are configured to facilitate the alerting of an operator standing in a basket or cage to the presence of an obstacle that may potentially strike the operator before the strike occurs, and the switch activation device is configured to prevent further movement of the basket or cage once the switch activation device is activated.

Abstract: The present invention provides an anti-entrapment device for an aerial lift having a basket or cage. The anti-entrapment device comprises an elongate housing; two or more sensors housed within said elongate housing and a switch activation device coupled to the elongate housing. At least one of said two or more sensors is positioned proximate an end of said elongate housing. Said switch activation device is arranged at an angle to the orientation of said sensor(s) positioned proximate the end of said elongate housing. The sensors are arranged to provide a detection zone and to detect obstacles within the detection zone. The sensors are configured to facilitate the alerting of an operator standing in a basket or cage to the presence of an obstacle that may potentially strike the operator before the strike occurs, and the switch activation device is configured to prevent further movement of the basket or cage once the switch activation device is activated.

Abstract: A pre-crush sensor module for use with a safety device for an aerial lift having a basket or cage. The pre-crush sensor module having removably attachable sensor which provide a detection zone wherein the sensors detect obstacles. The sensor module also having an operator warning system and a relay to connect the sensors to the safety device.

Abstract: A safety device for an aerial lift (10) having operator controls (23) for maneuvering its basket (20) to a desired location and including at least one passive normally closed safety switch (30)(130), e.g. an emergency switch, operable to cut electrical supply and prevent further movement of the basket (20), the safety device comprising a switch activation device (27,160,170) extending across the basket proximate to the controls (23) and an auxiliary safety switch (26) connected in series with the safety switch (30,130) with its contacts C1 normally closed (switch on) unless caused to open (switch off) by operation of the switch activation, thereby cutting off the electrical supply.

Abstract: A safety device for an aerial lift having a basket or cage with controls which permit an operator standing in the basket or cage to maneuver it. The safety device comprises a control module which is programmed to prevent movement of the basket or cage and activate an alarm by cutting electrical supply to a function enable switch and, if the electrical supply to the function enable switch cannot be cut, the control module is further programmed to prevent movement of the basket or cage and activate the alarm by operating an emergency switch to cut the electrical supply.

Abstract: A pre-crush sensor module for use with a safety device for an aerial lift having a basket or cage. The pre-crush sensor module having removably attachable sensor which provide a detection zone wherein the sensors detect obstacles. The sensor module also having an operator warning system and a relay to connect the sensors to the safety device.

Abstract: A safety device for an aerial lift having a basket or cage with controls which permit an operator standing in the basket or cage to manoeuvre it. The safety device comprises a control module which is programmed to prevent movement of the basket or cage and activate an alarm by cutting electrical supply to a function enable switch and, if the electrical supply to the function enable switch cannot be cut, the control module is further programmed to prevent movement of the basket or cage and activate the alarm by operating an emergency switch to cut the electrical supply.

Abstract: A safety device for an aerial lift (10) having operator controls (23) for manoeuvring its basket (20) to a desired location and including at least one passive normally closed safety switch means (30)(130), e.g. m emergency switch, operable to cut electrical supply and prevent further movement of the basket (20), the safety device comprising a switch activation device (27,160,170) extending across the basket proximate to said controls (23) and an auxiliary safety switch (26) connected in series with the safely switch means (30,130) with its contacts C1 normally closed (switch on) unless caused to open (switch off) by operation of said switch activation means, thereby cutting off said electrical supply.