A mobile well service unit has: a structural frame such as a chassis with ground engaging members; and a telescoping platform assembly mounted at a rear end of the structural frame, the telescoping platform assembly having a lower platform mounted to slide up and down relative to the structural frame, and an upper platform mounted to the lower platform to slide up and down relative to the lower platform. A mobile well service unit has: a structural frame with ground engaging members; a platform mounted at a rear end of the structural frame to slide up and down relative to the structural frame; and a set of telescoping and self-levelling stairs with an upper end pivotally anchored to the platform, and a lower end pivotally anchored to the structural frame.

A telescopically extendable and collapsible ladder assembly includes a top ladder section, a bottom ladder section, and one or more intermediate ladder sections. The assembly may include sliding automatic release actuators, having a slanted actuating surface for interaction with actuator surfaces of spacers provided at each end of a rung of an adjacent ladder section, such that, when a rung is moved towards the rung of an adjacent lower ladder section, the activation surfaces of the spacers push the release actuators into an unlocking position and subsequently position the rung at an anti-finger pinching distance. The top rung of the bottom ladder section may be provided with a centrally arranged grip element that forms a housing for manually operable release actuators provided at the bottom side of the rung.

A telescopically extendable and collapsible ladder assembly includes a top ladder section, a bottom ladder section, and one or more intermediate ladder sections. The assembly may include sliding automatic release actuators, having a slanted actuating surface for interaction with actuator surfaces of spacers provided at each end of a rung of an adjacent ladder section, such that, when a rung is moved towards the rung of an adjacent lower ladder section, the activation surfaces of the spacers push the release actuators into an unlocking position and subsequently position the rung at an anti-finger pinching distance. The top rung of the bottom ladder section may be provided with a centrally arranged grip element that forms a housing for manually operable release actuators provided at the bottom side of the rung.

The present invention relates to a structure for supporting an information or surveillance device above a road. The structure includes: at least one post extending upwards from the ground to an elevated position, at least one overhead beam which is supported by said post, the overhead beam extending over a horizontal distance above the road, at least one information or surveillance device being connected to said overhead beam and being positioned above the road, a catwalk extending along the overhead beam, wherein said catwalk comprises a guard rail assembly which is movable between: an operating position in which the guard rail assembly extends upwardly from a floor of the catwalk and protects personnel from falling from the catwalk, and a retracted, non-operating position in which the guard rail assembly is concealed behind the overhead beam when viewed from a direction of approaching traffic on the road.

The present invention relates to a structure for supporting an information or surveillance device above a road. The structure includes: at least one post extending upwards from the ground to an elevated position, at least one overhead beam which is supported by said post, the overhead beam extending over a horizontal distance above the road, at least one information or surveillance device being connected to said overhead beam and being positioned above the road, a catwalk extending along the overhead beam, wherein said catwalk comprises a guard rail assembly which is movable between: an operating position in which the guard rail assembly extends upwardly from a floor of the catwalk and protects personnel from falling from the catwalk, and a retracted, non-operating position in which the guard rail assembly is concealed behind the overhead beam when viewed from a direction of approaching traffic on the road.

A modular scaffold, which includes parts to be joined to each other, which parts are at least standards, ledgers, working platforms and the necessary railings, and also ladders. The parts of the modular scaffold are fabricated mainly from plastic and/or fiber composite.

A modular scaffold, which includes parts to be joined to each other, which parts are at least standards, ledgers, working platforms and the necessary railings, and also ladders. The parts of the modular scaffold are fabricated mainly from plastic and/or fiber composite.

Disclosed is a device for enabling an aircraft maintenance operator to access the exterior body of the aircraft. The device is adapted to be releasingly anchored to the fuselage of the aircraft. The device comprises a platform disposed above and transversely with respect to the fuselage and a pair of legs straddling the fuselage wherein, the platform extends between the pair of legs. Each leg comprises a leading means for leading the operator to reach the platform from the ground therethrough.

Disclosed is a device for enabling an aircraft maintenance operator to access the exterior body of the aircraft. The device is adapted to be releasingly anchored to the fuselage of the aircraft. The device comprises a platform disposed above and transversely with respect to the fuselage and a pair of legs straddling the fuselage wherein, the platform extends between the pair of legs. Each leg comprises a leading means for leading the operator to reach the platform from the ground therethrough.

A system and method are provided for employing man-portable unitary platform system segments, particularly as components of integrated castle defense systems. A lightweight modular and mobile system of integrated platform segments is provided to facilitate users integrating flexible platform configurations secured to existing wall structures to support myriad user tasks. Individual platform system segments can be autonomously employed, or can be linked together after being quickly attached to a wall, a structure, or another supporting surface by two users in minimal time. In law enforcement, security, military and/or paramilitary employment scenarios, individual platform system segments are emplaced, and linked together, to provide a unitary defensible position in a matter of minutes. An overall platform structure of a plurality of individual man-portable platform system segments provides operational and employment flexibility that was previously unattainable to bolster or boost defenses of a particular position against increasing, and increasingly agile, threats.