The recreational vehicle trailer chassis includes two main frame rails running front to back with a series of perpendicular connecting main cross-members to form a structural configuration increasing the torsional rigidity of the frame. The main floor and support framing has a front and rear living area generally divided by the direction of structural trusses. Above the rear and middle main frame rails is the rear and middle floor framing formed with a plurality of frame members. Between the rear and middle main frame rails and below the rear and middle main floor support framing are structural web beam trusses perpendicular to the main frame rails along with vertical support columns that connect the lower main frame to the rear and middle living area floor framing further increasing structural torsional rigidity. Above the forward main frame rails and vertical support columns is the front floor framing with a plurality of frame members along with structural web beam trusses running parallel with the forward living area floor. Outward from the main frame rails and vertical floor support columns is the front to back side saddle framing to allow access to the basement area internally and externally. The furthermost forward floor framing sections are where the hitch structure and hitch are located.

A selectively lowerable and raisable vehicle trailer system for raising and lowering of a vehicle trailer to expedite loading and unloading of cargo includes a rear wheel assembly. An elongated trailer is pivotally supported by the rear wheel assembly. The trailer is positional between a horizontal transport orientation and a sloped or angled loading/unloading orientation on the rear wheel assembly. The rear wheel assembly is selectively adjustable in position along the trailer between a rear transport position and a forward loading/unloading position, rearward and forward of the trailer center of gravity, respectively. A wheel assembly adjustment mechanism engages the rear wheel assembly. The wheel assembly adjustment mechanism operably engages the rear wheel assembly to facilitate selective positioning of the rear wheel assembly between the transport position and the loading/unloading position. A method of loading and unloading cargo onto and from a vehicle trailer is also disclosed.

The invention relates to a heavy-load vehicle comprising at least two partial vehicles, namely a frontmost partial vehicle and a rearmost partial vehicle, said frontmost partial vehicle having connecting means, and said rearmost partial vehicle having counter-connecting means adapted and configured for cooperating with said connecting means, one of said connecting means and said counter-connecting means including an inner telescopic member guided in a hollow outer telescopic member in a telescoping manner. According to the invention said hollow outer telescopic member is integrally formed by a tubular or box-shaped central part of a partial vehicle frame of one of the partial vehicles, said hollow outer telescopic member and said inner telescopic member cooperating therewith being parts of the same partial vehicle.

A tractor trailer roof heater apparatus for preventing snow and ice accumulation includes a reservoir configured to hold heater oil within an inner cavity and configured to be coupled to a tractor trailer. A heater is coupled to a bottom side of the reservoir within the inner cavity and is configured to heat the heater oil. A pump is coupled to a top side of the reservoir and has a draw tube extending through a pump aperture into the inner cavity to draw the heater oil from the reservoir and push it through an outlet aperture through an oil tube. The oil tube is configured to be coupled within a roof of the tractor trailer to carry hot heater oil from the pump and then return the heater oil to the reservoir. A power supply is coupled to the pump and a thermostat is coupled to the reservoir.

A tractor trailer roof heater apparatus for preventing snow and ice accumulation includes a reservoir configured to hold heater oil within an inner cavity and configured to be coupled to a tractor trailer. A heater is coupled to a bottom side of the reservoir within the inner cavity and is configured to heat the heater oil. A pump is coupled to a top side of the reservoir and has a draw tube extending through a pump aperture into the inner cavity to draw the heater oil from the reservoir and push it through an outlet aperture through an oil tube. The oil tube is configured to be coupled within a roof of the tractor trailer to carry hot heater oil from the pump and then return the heater oil to the reservoir. A power supply is coupled to the pump and a thermostat is coupled to the reservoir.

A vehicle suspension position adjustment arrangement including a frame member having a plurality of apertures, and a trailing arm having a first end pivotally coupled to a slide member and a second end biased away from the frame member. A locking pin movable between an unlocked position where the locking pin is withdrawn from one of the apertures and the slide member is free to slide along the frame member, and a locked position where the locking pin engages one of the apertures preventing the slide member from sliding along the frame member, and a plurality of sensors spaced along the frame member, wherein a single sensor of the plurality of sensors is configured to sense both the locking condition of the locking pin and the location of the locking pin along the frame member.

A through the road (TTR) hybridization strategy is proposed to facilitate introduction of hybrid electric vehicle technology in a significant portion of current and expected trucking fleets. In some cases, the technologies can be retrofitted onto an existing vehicle (e.g., a truck, a tractor unit, a trailer, a tractor-trailer configuration, at a tandem, etc.). In some cases, the technologies can be built into new vehicles. In some cases, one vehicle may be built or retrofitted to operate in tandem with another and provide the hybridization benefits contemplated herein. By supplementing motive forces delivered through a primary drivetrain and fuel-fed engine with supplemental torque delivered at one or more electrically-powered drive axles, improvements in overall fuel efficiency and performance may be delivered, typically without significant redesign of existing components and systems that have been proven in the trucking industry.

A through the road (TTR) hybridization strategy is proposed to facilitate introduction of hybrid electric vehicle technology in a significant portion of current and expected trucking fleets. In some cases, the technologies can be retrofitted onto an existing vehicle (e.g., a truck, a tractor unit, a trailer, a tractor-trailer configuration, at a tandem, etc.). In some cases, the technologies can be built into new vehicles. In some cases, one vehicle may be built or retrofitted to operate in tandem with another and provide the hybridization benefits contemplated herein. By supplementing motive forces delivered through a primary drivetrain and fuel-fed engine with supplemental torque delivered at one or more electrically-powered drive axles, improvements in overall fuel efficiency and performance may be delivered, typically without significant redesign of existing components and systems that have been proven in the trucking industry.

A louvered sidewall cargo container assembly for reducing crosswind exposure includes a cargo container, which is substantially cuboid shaped and comprises a pair of sidewalls, a front, a back, a bottom, and a roof. Each sidewall comprises a plurality of louvers. An actuator is engaged to the cargo container and is operationally engaged to each of the plurality of louvers. The actuator is positioned to selectively motivate each of the louvers between a first position a second position. In the first position, the louver is substantially perpendicular to the bottom and each of the plurality of louvers is in a closed configuration. In the second position, the louver is transverse or parallel to the bottom, extends into the cargo container, and each of the pluralities of louvers is in an open configuration. In the open configuration, the pluralities of louvers allow passage of a crosswind through the cargo container.

The disclosure relates to a trailer for hauling tyres. The trailer includes a frame having a front end, a rear end and a pair of parallel elongate chassis rails. The trailer also includes one or more pairs of transverse rails, each pair of transverse rails being adapted to support one or more tyres in an upstanding position thereon. Each pair of transverse rails is longitudinally translatable with respect to the elongate chassis rails between the front and rear ends of the frame. Each transverse rail in the pair is independently longitudinally translatable with respect to the elongate chassis rails so that the spacing of the pair of transverse rails may be varied to suit a tyre diameter. The trailer is also provided with a tyre stillage associated with each pair of transverse rails for supporting one or more upstanding tyres thereagainst.