A cage for surrounding a section of a work area of the top of rolling stock forms part of a portable fall protection device that includes a positioning mechanism capable of telescoping, folding and pivoting motions that are maneuvered by pneumatically-powered or hydraulically-powered apparatus. A gate, lock, pressure lines, valves and control devices are combined with the cage to ensure proper deployment of worker fall protection in this working environment.

A cage for surrounding a section of a work area of the top of rolling stock forms part of a portable fall protection device that includes a positioning mechanism capable of telescoping, folding and pivoting motions that are maneuvered by pneumatically-powered or hydraulically-powered apparatus. A gate, lock, pressure lines, valves and control devices are combined with the cage to ensure proper deployment of worker fall protection in this working environment.

Fall restraint equipment comprising a mobile access unit having a mobile platform portion, a ladder portion, and a cage portion. The components of the fall restraint equipment are formed from butterflying, lasering, cutting, bending, and/or stamping continuous pieces of tubular and sheet metal. The components of the mobile access unit are modular and include adapters of varying height that cause the mobile access unit to exhibit varying height. Also, the mobile access unit is adaptable so that it can roll in a first direction of orientation of the ladder or a second direction perpendicular to the first direction.

Fall restraint equipment comprising a mobile access unit having a mobile platform portion, a ladder portion, and a cage portion. The components of the fall restraint equipment are formed from butterflying, lasering, cutting, bending, and/or stamping continuous pieces of tubular and sheet metal. The components of the mobile access unit are modular and include adapters of varying height that cause the mobile access unit to exhibit varying height. Also, the mobile access unit is adaptable so that it can roll in a first direction of orientation of the ladder or a second direction perpendicular to the first direction.

A tray assembly is provided for use with a carrier in a product sortation system. The tray assembly includes a platform to receive parcels loaded onto the carrier. A pair of movable edge members are disposed at opposite sides of the platform. Each edge member is integrated with a combination including a pair of pivotable support arms and a spring element intermediate of the support arms. Each support arm supports its edge member at one end and is pivotally mounted at another end to a tray framework. The spring element is fixedly mounted at one end to the tray framework and is connected at another end to its edge member in a biasing relationship. In response to an applied load resulting from a parcel bearing down on the edge member, the support arms pivot downward in a manner sufficient to allow the parcel to reach and then rest on the tray platform. At the same time as the support arms pivot, the spring element deflects. After the package is unloaded from the tray platform, the return action of the spring restores the edge members back to their original location, as guided by the support arms.

A tray assembly is provided for use with a carrier in a product sortation system. The tray assembly includes a platform to receive parcels loaded onto the carrier. A pair of movable edge members are disposed at opposite sides of the platform. Each edge member is integrated with a combination including a pair of pivotable support arms and a spring element intermediate of the support arms. Each support arm supports its edge member at one end and is pivotally mounted at another end to a tray framework. The spring element is fixedly mounted at one end to the tray framework and is connected at another end to its edge member in a biasing relationship. In response to an applied load resulting from a parcel bearing down on the edge member, the support arms pivot downward in a manner sufficient to allow the parcel to reach and then rest on the tray platform. At the same time as the support arms pivot, the spring element deflects. After the package is unloaded from the tray platform, the return action of the spring restores the edge members back to their original location, as guided by the support arms.

An arrangement for loading a cargo space includes a transfer element as part of the transfer apparatus, which is arranged to move, together with load units to be arranged on top of it, into a cargo space and back out of there leaving the load units in the cargo space and means for forming a protective wall between the structure defining the cargo space and the load units. The forming of the protective wall is synchronized with the movement of the transfer element. In addition, an apparatus is disclosed for forming a protective wall in a cargo space and a method for loading a cargo space.

An arrangement for loading a cargo space includes a transfer element as part of the transfer apparatus, which is arranged to move, together with load units to be arranged on top of it, into a cargo space and back out of there leaving the load units in the cargo space and means for forming a protective wall between the structure defining the cargo space and the load units. The forming of the protective wall is synchronized with the movement of the transfer element. In addition, an apparatus is disclosed for forming a protective wall in a cargo space and a method for loading a cargo space.

Example vehicle restraints with a barrier having rotational and translational motion are described. An example vehicle restraint includes a carriage frame movable vertically relative to the dock. A drive shaft is supported by the carriage frame. A drive unit is to rotate the drive shaft about a shaft axis and relative to the carriage frame. A hub is connected to rotate with the drive shaft about the shaft axis, the hub having an outer diameter surface that is radially off center relative to the shaft axis. A barrier defines a bore that encircles the outer diameter surface of the hub. The barrier is movable selectively to an extended position and a retracted position. The barrier being connected to move selectively to the extended position and the retracted position in response to relative rotation between the outer diameter surface of the hub and the bore of the barrier.

Example vehicle restraints with a barrier having rotational and translational motion are described. An example vehicle restraint includes a carriage frame movable vertically relative to the dock. A drive shaft is supported by the carriage frame. A drive unit is to rotate the drive shaft about a shaft axis and relative to the carriage frame. A hub is connected to rotate with the drive shaft about the shaft axis, the hub having an outer diameter surface that is radially off center relative to the shaft axis. A barrier defines a bore that encircles the outer diameter surface of the hub. The barrier is movable selectively to an extended position and a retracted position. The barrier being connected to move selectively to the extended position and the retracted position in response to relative rotation between the outer diameter surface of the hub and the bore of the barrier.