A height extender for a control arm skate has an upper face configured to receive a control arm of a vehicle and a lower face configured to engage with an upper face of an underlying control arm skate. Extenders may be stacked.

A height extender for a control arm skate has an upper face configured to receive a control arm of a vehicle and a lower face configured to engage with an upper face of an underlying control arm skate. Extenders may be stacked.

A cooler sled device for facilitating transport of a cooler over surfaces such as gravel, loose terrain, and sand includes a panel. A bottom surface of the panel is convexly curved between outer sides of a perimeter edge of the panel and extending rearwardly from a front side of the perimeter edge defining an upwardly turned front section of the bottom surface. Each of a pair of wells is positioned on an upper surface of the panel and proximate a respective one of the outer sides of the perimeter edge for receiving wheels coupled to a cooler positioned on the panel. A strap is positionable to extends across the upper surface of the panel for securing the cooler on the panel.

A cooler sled device for facilitating transport of a cooler over surfaces such as gravel, loose terrain, and sand includes a panel. A bottom surface of the panel is convexly curved between outer sides of a perimeter edge of the panel and extending rearwardly from a front side of the perimeter edge defining an upwardly turned front section of the bottom surface. Each of a pair of wells is positioned on an upper surface of the panel and proximate a respective one of the outer sides of the perimeter edge for receiving wheels coupled to a cooler positioned on the panel. A strap is positionable to extends across the upper surface of the panel for securing the cooler on the panel.

The present invention provides a retractable wheel system for snowmobile skis. The retractable wheel system of the present invention may be installed on a snowmobile ski without affecting its structural integrity by installing the system on the reinforced portion of the snowmobile ski. When a user circulates in a path with little or no snow, the retractable wheel system is positioned in the extended configuration by the user and the system will automatically return to the retracted configuration when the user returns in a snowy zone. This is realized by using a pre-tensioned spring that will reposition the wheel in the retracted configuration. The spring transmits a rotational movement to the member on which the wheel is fixed.

The present invention provides a retractable wheel system for snowmobile skis. The retractable wheel system of the present invention may be installed on a snowmobile ski without affecting its structural integrity by installing the system on the reinforced portion of the snowmobile ski. When a user circulates in a path with little or no snow, the retractable wheel system is positioned in the extended configuration by the user and the system will automatically return to the retracted configuration when the user returns in a snowy zone. This is realized by using a pre-tensioned spring that will reposition the wheel in the retracted configuration. The spring transmits a rotational movement to the member on which the wheel is fixed.

A convertible carriage for transporting subjects on a plurality of operating surfaces. The convertible carriage includes a receptacle, a sledge attached to the receptacle, a set of wheel assemblies, and a set of telescopic landing gears attached to the receptacle, and connected to the wheel assemblies. The telescopic landing gears are configured to operably extend or retract to switch the convertible carriage between a rolling operation mode and a sliding operation mode. In the rolling operation mode, one or more wheel assemblies from the set of wheel assemblies are in contact with the operating surface such that the convertible carriage is transportable on an operating surface by rolling of the wheel assemblies. In the sliding operation mode, the set of wheel assemblies are retracted to allow the sledge to contact with the operating surface such that the convertible carriage may be transportable on the operating surface by sliding.

A convertible carriage for transporting subjects on a plurality of operating surfaces. The convertible carriage includes a receptacle, a sledge attached to the receptacle, a set of wheel assemblies, and a set of telescopic landing gears attached to the receptacle, and connected to the wheel assemblies. The telescopic landing gears are configured to operably extend or retract to switch the convertible carriage between a rolling operation mode and a sliding operation mode. In the rolling operation mode, one or more wheel assemblies from the set of wheel assemblies are in contact with the operating surface such that the convertible carriage is transportable on an operating surface by rolling of the wheel assemblies. In the sliding operation mode, the set of wheel assemblies are retracted to allow the sledge to contact with the operating surface such that the convertible carriage may be transportable on the operating surface by sliding.

A trailer includes a trailer frame having a hitch. A stationary support base is joined to the trailer frame. Two supports are slidably guided on the support base toward and away from each other. A wheel assembly is mounted to an end of each of the supports remote from the other support such that a distance between the wheel assemblies varies with movement of the supports on the support base. A locking device selectively locks each support to the support base in a first position where the wheel assemblies are furthest from each other and a second position where the wheel assemblies are closer to each other.

A trailer includes a trailer frame having a hitch. A stationary support base is joined to the trailer frame. Two supports are slidably guided on the support base toward and away from each other. A wheel assembly is mounted to an end of each of the supports remote from the other support such that a distance between the wheel assemblies varies with movement of the supports on the support base. A locking device selectively locks each support to the support base in a first position where the wheel assemblies are furthest from each other and a second position where the wheel assemblies are closer to each other.