In one embodiment of the invention, a ladder and method for removably mounting the ladder on a recreational vehicle is disclosed. The ladder may be removed and used as a standard step ladder. The ladder includes a top end and two pairs of legs extending downward from the top end. At least one of the pairs of legs is pivotally mounted to the top end, and a pivoting limiting mechanism is provided to allow the pairs of legs to fold adjacent one another or unfold to a use position as a step ladder. An upper mounting arrangement is attached to the recreational vehicle. The arrangement includes two free ends extending downwardly therefrom; and the top end of the ladder includes receivers for receiving free ends of the upper mounting arrangement.

A construction machine allows a worker to easily move between one pair of side frames through a travelling body weight. The construction machine includes a lower travelling body of a crane includes a truck frame, a left side frame and a right side frame, a front weight and a rear weight, and scaffolding members. Scaffolding upper surface parts of the scaffolding members and upper surface parts of the front weight and the rear weight are disposed in line with each other along a left and right direction, and form a moving passage that allows the worker to move between the left and right side frames.

The invention relates to a tread device for walking on a crawler carrier of a work machine having a caterpillar drive, wherein the tread device has a holder that can be installed at the crane, in particular at the crawler carrier, at which at least one tread surface is provided, characterized in that the tread surface lies on the upwardly disposed surface of a crawler chain of the caterpillar drive in the state installed at the work machine and the lower side of the tread surface comprises at least one sliding element to ensure a sliding or rolling relative movement between the crawler chain and the tread surface.

A gangway for use with a container to be accessed is provided. The gangway comprises a fixed platform and a support structure connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform between a raised stowed position and a lowered deployed position. An end platform is pivotally connected at the distal end of the support structure, the end platform defining an upper walking surface and a bottom surface that engages the top of the container, the height between the bottom surface and the walking surface being no greater than one inch.

An agricultural product delivery applicator for delivering particulate product to a field. The applicator comprises a bin to hold the product, a pneumatic conveying system to provide an airflow, a metering system operably connected between the supply compartment and the pneumatic conveying system, and a rail system. The metering system meters product with the airflow to result in a mixed flow of airflow and product. The rail system includes first and second foldable rails.

Described is an access ladder for a vehicle, comprising two or more steps (1, 2, 3, 4), vertically superposed on each other, each of which comprises a main surface (10, 20, 30, 40). The projection on a horizontal plane of the main surface of each step (1, 2, 3, 4) protrudes at least partly from the projection on a horizontal plane of the main surface of a step above.

Embodiments of safety trucks incorporate multiple connection points to which a variety of attachments, or combinations of attachments, can be releasably and interchangeably coupled to enable their use with increased effectiveness to safeguard roadway construction, maintenance and repair personnel as they perform tasks within or relatively near to roadway workzones and worksites. Also, methods of operation of the safety truck embodiments enhance their ability to guard and protect roadway construction, maintenance and repair personnel while they work within or relatively near to roadway workzone and worksite locations.

Systems, methods, and devices for a vehicle door or window are disclosed herein. A vehicle includes a vehicle body and a cabin located within the body of the vehicle, wherein the cabin includes an interior that is configured to accommodate at least one person. The vehicle includes at least one seat located in the interior of the cabin that is configured for seating a user. The vehicle includes at least one door that provides ingress and egress of the interior of the cabin of the vehicle, and the at least one door is located with respect to the body such that the door opens to provide ingress and egress of the cabin from a backside of the seat. Further, the door may be a cargo door, which allows access to the cabin for placement of a load, such as a cargo load on a pallet.

A railing assembly includes at least one ratcheting post and at least one connection post. The at least one ratcheting post includes at least one ratcheting assembly attached to the at least one ratcheting post for selectively engaging a strap and the at least one connecting post including at least one attachment point for engaging an attachment member on the strap.

An upper rail assembly, an actuator that actuates between a retracted position and an extended position based on a signal that the platform is in one of a retracted position and an extended position with respect to the recreational vehicle, and a first drive chain combined to the actuator and connected to the upper rail assembly for moving the upper rail assembly between a retracted position and an extended position with respect to the platform is disclosed.