One example provides a chassis for an electric snowmobile including a battery pack. The battery pack includes a battery pack housing defining an enclosure for housing a number of battery modules for powering an electric motor of the electric snowmobile, the battery pack housing having a length extending in a longitudinal direction of the snowmobile, the battery pack housing including a bottom surface. A pair of opposing side panels extends downwardly from and along at least a portion of the length of the battery pack housing, the opposing panels and at least portions of the bottom surface of the battery pack housing together forming a rear structure extending in the longitudinal direction of the electric snowmobile.

A track for traction of a vehicle e.g., a snowmobile, a snow bike, an all-terrain vehicle (ATV), etc.), in which the track may have features to enhance its traction, floatation, and/or other aspects of its performance, including to be lightweight, facilitate turning, enhance acceleration, reduce noise, adapt to different ground conditions, and/or provide other benefits.

A track for traction of a vehicle e.g., a snowmobile, a snow bike, an all-terrain vehicle (ATV), etc.), in which the track may have features to enhance its traction, floatation, and/or other aspects of its performance, including to be lightweight, facilitate turning, enhance acceleration, reduce noise, adapt to different ground conditions, and/or provide other benefits.

Methods and devices for generally fungible robots that autonomously cooperate to transport a load are provided. A method of transporting a load includes providing first and second robots each having a motive mechanism independently operable from the other. Each robot obtains estimates of a width, length, and height of the load. Each robot can obtain estimates of a weight or stability information of the load. Each robot autonomously determines how to engage the load for transportation based at least partially on the width, length, height, and weight of the load, as well as physical limitations of each robot and the terrain between the load and the delivery point. The robots autonomously cooperate with each other to transport the load. In another aspect, robots autonomously monitor the stability of a load, determine optimum configuration for stable transport of the load, and reconfigure based on stability changes during transport.

A snowmobile extends along a longitudinal axis and includes a frame, a powertrain coupled to the frame and a track operatively coupled to the powertrain, the track having an upper run and a lower run. The snowmobile includes a rear suspension having at least one slide rail having a hyfax defining a plane, at least one front idler wheel in contact with the lower run of the track, at least one center idler wheel positioned adjacent the at least one front idler wheel, and at least one rear idler wheel positioned adjacent the at least one center idler wheel, and wherein the positioning of the at least center idler wheel is configured such that the at least one rear idler wheel is positioned at an angle relative to the plane having a value that is greater than zero.

A snowmobile extends along a longitudinal axis and includes a frame, a powertrain coupled to the frame and a track operatively coupled to the powertrain, the track having an upper run and a lower run. The snowmobile includes a rear suspension having at least one slide rail having a hyfax defining a plane, at least one front idler wheel in contact with the lower run of the track, at least one center idler wheel positioned adjacent the at least one front idler wheel, and at least one rear idler wheel positioned adjacent the at least one center idler wheel, and wherein the positioning of the at least center idler wheel is configured such that the at least one rear idler wheel is positioned at an angle relative to the plane having a value that is greater than zero.

A drive track for a tracked vehicle has an endless belt having an inner surface and an outer surface. The belt defines a longitudinal direction and a lateral direction. A plurality of external lugs project outwards from the outer surface of the belt. Each of the plurality of external lugs has a height in a direction normal to the outer surface. The plurality of external lugs forms a plurality of lateral rows. A longitudinal spacing between consecutive lateral rows of the plurality of lateral row is an external lug pitch. The height of at least some of the plurality of external lugs is greater than the external lug pitch. Drive sprocket and drive track assemblies and vehicles having the drive track are also presented.

The tracked stroller frame device may allow a user to take a stroller with them when camping, hiking, or otherwise travelling over rough terrain. The device implements a continuous track system for providing additional tractive area and reducing or eliminating getting stuck on uneven surfaces, and may include a motorized mechanism for providing driving force. The tracked stroller device allows a user to take a baby or young child with them without carrying the baby or young child. The device may be collapsible for ease of storage and transporting and may incorporate a storage area to allow for transporting of other items. A braking system may also be implemented to slow down the device or keep it parked.

The tracked stroller frame device may allow a user to take a stroller with them when camping, hiking, or otherwise travelling over rough terrain. The device implements a continuous track system for providing additional tractive area and reducing or eliminating getting stuck on uneven surfaces, and may include a motorized mechanism for providing driving force. The tracked stroller device allows a user to take a baby or young child with them without carrying the baby or young child. The device may be collapsible for ease of storage and transporting and may incorporate a storage area to allow for transporting of other items. A braking system may also be implemented to slow down the device or keep it parked.

The compact pulling apparatus includes a watertight elongated housing extending along a longitudinal axis and a track disposed around the housing along its longitudinal axis. The track enables the apparatus to move when rotatably driven around the housing. Depending on the implementation, the apparatus can include a generator/motor to selectively produce electricity which can power external equipment and rotatably drive the track, and/or a fuel-power engine. The apparatus further includes a power train assembly by which the rotating output power is transmitted from inside to outside the housing by the power train assembly using at least one rotatable shaft section sealingly extending across a corresponding one of the walls of the housing.