A cover for a truck bed that can be horizontally traversed between expanded and collapsed positions is shown. Since the cover is horizontally traversed, the person manipulating the cover need not lift the cover vertically in order to reconfigure the cover between the expanded and collapsed positions. Women and elderly people who are generally not as strong as men can manipulate the cover.

An uplift bow assembly and a sliding tarpaulin system are described. The uplift bow assembly includes first and second car plates and a frame having a center portion. The frame includes first and second downwardly extending frame arms connected respectively to the first and second car plates. The assembly also includes a plurality of uplift bows, each having a center portion and first and second downwardly extending bow arm pivotably connected to the first and second car plates respectively. Each of the first and second car plates is configured to support the selective pivoted connection of at least five uplift bows. The sliding tarpaulin system includes first and second tracks and a plurality of uplift bow assemblies that extend laterally across the trailer. The first and second car plates slideably engage the respective first and second tracks.

The invention relates to a tarpaulin structure for a substructure, such as a lorry, trailer, semi-trailer, railway car, dump truck or container, comprising a covering frame and a tarpaulin consisting of weather-resistant material, wherein the covering frame has a plurality of struts (34) which each have on the end sides thereof a carriage (32) that is displaceable along a guide (20), wherein at least one bow (36) is pivotally connected at each pair of opposed carriages (32; 32), said bow forming with a bow (36) of an adjacent carriage pair (32) a tarpaulin folding aid, the bows (36) of the tarpaulin folding aid being connected to each other. A tarpaulin structure that allows a reliable covering of a substructure while having a low intrinsic weight is achieved according to the invention in that the connected bows (36) comprise a pivot angle limiter (38) that allows only a limited pivoting of the bows (36).

Sliding tarp systems employed on trailers are disclosed. Various systems and improvements are disclosed which allow for unobstructed access to the tarp storage area and more reliable operation of the sliding tarp system. Unobstructed access to the storage area is achieved by providing extensions to the sliding tarp system tracks which the sliding tarp system support elements can be slid onto, leaving the storage area completely uncovered. The sliding tarp system track extensions can be removed or reoriented when not in use.

A cover for a truck bed that can be horizontally traversed between expanded and collapsed positions is shown. Since the cover is horizontally traversed, the person manipulating the cover need not lift the cover vertically in order to reconfigure the cover between the expanded and collapsed positions. Women and elderly people who are generally not as strong as men can manipulate the cover.

A movable tarp enclosure system includes a tarp cover, support rails, a plurality of support bows connected to and supporting the tarp cover, and movable carriages connected to lower ends of said bows and which move along the support rails. Each of the support bows includes first and second main sections formed of rigid material and having hollow ends, and a corner member formed of rigid material which connects the first and second main sections together such that the main sections extend substantially perpendicular to each other. The corner member has end portions fitted into the hollow ends of the main sections, and the end portions each have an outer circumference with a size and shape that substantially corresponds to those of an inner circumference of the hollow ends of the main sections such that the end portions are stably connected within the hollow end portions by frictional engagement.

A cover for a truck bed that can be horizontally traversed between expanded and collapsed positions is shown. Since the cover is horizontally traversed, the person manipulating the cover need not lift the cover vertically in order to reconfigure the cover between the expanded and collapsed positions. Women and elderly people who are generally not as strong as men can manipulate the cover.

A support rail for a movable, flatbed trailer-mounted tarp enclosure system having a tarp cover, a plurality of substantially U-shaped bows connected to and supporting the tarp cover, and rolling carriages connected to lower ends of said bows and which roll along the support rail, the support rail including a first elongate rail section which is fixed to the trailer and extends substantially parallel to a cargo support surface of the trailer, a second elongate rail section which is movably connected to the trailer, and a support mechanism which connects the second elongate rail section to the trailer such that the second elongate rail section may be moved between a first position extending continuously to the first elongate rail section along a common axis and a second position parallel to but at a different level from the first elongate rail section.

A movable carriage for a movable, tarp enclosure system includes a main body, plural primary support wheels connected to the main body and configured to engage and roll along support rails while supporting the movable carriage, at least one smaller stabilizing wheel connected to the main body and configured to engage the support rails for stabilizing and/or aligning movement of the movable carriage as it moves along the support rail supported by the primary support wheels, and a housing to which the at least one stabilizing wheel is rotatably secured. The housing is provided with one of a guide track and a channel which securely and sliding receives the guide track therein, the main body is provided with the other of the guide track and the channel, and the housing is secured to main body by engaging the guide track within the channel.

A cover for a truck bed that can be horizontally traversed between expanded and collapsed positions is shown. Since the cover is horizontally traversed, the person manipulating the cover need not lift the cover vertically in order to reconfigure the cover between the expanded and collapsed positions. Women and elderly people who are generally not as strong as men can manipulate the cover.