An apparatus for providing a secondary power source for an electric vehicle, the apparatus attachable to the electric vehicle and having at least one secondary electrical power storage unit for storing electrical energy for delivery to the electric vehicle as required to replace the primary power source, a power connection assembly to connect the at least one secondary power source to the electric vehicle and a control system to control supply to the electric vehicle.

Multi-level delivery systems and various apparatus associated therewith are presented. Multi-level delivery systems include a number of integrated, modular and interchangeable compactible elements that may work either alone or in conjunction with other such elements to allow for the deployment of a delivery system having a smaller overall spatial footprint when compared to comparable conventional delivery systems. Apparatus combining to form a delivery system may include one or more of: a compactible container cart, a compactible cart hauler or trailer and a propulsion means. These elements or apparatus may be deployed in any combination, either together as an integrated system or with compatible conventional apparatus. In combination, delivery systems maximize space efficiency, and allow for adaption to any environment and scale.

A suspension system is provided for a sidecar of a motorcycle, which includes a sidecar frame and a wheel with an axle. The suspension system can include, a support frame pivotally secured to the sidecar frame, and a trailing link pivotally secured to the support frame at a leading end of the trailing link. A trailing end of the trailing link can be configured to trail behind the leading end of the trailing link relative to a direction of forward motion of the sidecar. The trailing end of the trailing link being configured to rotatably support the axle of the wheel.

A suspension system is provided for a sidecar of a motorcycle, which includes a sidecar frame and a wheel with an axle. The suspension system can include, a support frame pivotally secured to the sidecar frame, and a trailing link pivotally secured to the support frame at a leading end of the trailing link. A trailing end of the trailing link can be configured to trail behind the leading end of the trailing link relative to a direction of forward motion of the sidecar. The trailing end of the trailing link being configured to rotatably support the axle of the wheel.

This disclosure concerns a propulsion and load distribution system for a pedal actuated vehicle. More specifically, this disclosure is directed to an electrically powered frame, trailer, vehicle, trailer, cart, and/or cycle coupled to at least one motorized wheel operably connected thereto. In some embodiments, the propulsion system can be operably associated with a load distribution system comprising a rocker arm and a spring that are configured to be associated with a frame having an axle or to which an axle can be mounted.

This disclosure concerns a propulsion and load distribution system for a pedal actuated vehicle. More specifically, this disclosure is directed to an electrically powered frame, trailer, vehicle, trailer, cart, and/or cycle coupled to at least one motorized wheel operably connected thereto. In some embodiments, the propulsion system can be operably associated with a load distribution system comprising a rocker arm and a spring that are configured to be associated with a frame having an axle or to which an axle can be mounted.

A bicycle seat recline adjusts the incline of a bicycle trailer seat back. The seat recline can comprise opposed gear racks engaged by gears at opposite ends of a cross member. The cross member is coupled to an upper portion of the seat back. Moving the cross member moves the gears in the gear racks and adjusts the angle of the seat back. The cross member is desirably selectively and simultaneously lockable to and releasable from any one of a plurality of positions along the gear rack. A lower portion of the seat back can pivot about a lower pivot axis. The gear racks can be arced to maintain a constant distance to the lower pivot axis as the cross member is moved and maintains a constant tension on the seat back. A plurality of seats with adjustable seat back reclines can be included in the bicycle trailer.

A bicycle trailer latch comprises a skewer engaging surface that is desirably at least in part spherical, such as hemispherical. When engaging a bicycle skewer at the rear wheel of a bicycle, the spherical engagement surface allows more freedom of movement of the bicycle trailer relative to the skewer during towing. This enhances the trailers ability to track the movement of the bicycle. The latch can comprise a housing with a housing opening sized to receive the end portion of the bicycle wheel skewer. A stop inside the housing is pivotal to stop closed and stop open positions. In the stop closed position, the housing opening is sufficiently to block the decoupling of the latch from bicycle skewer. In the stop open position, the stop opens the housing opening sufficiently to permit passage of the end portion of the skewer through the housing opening.

A bicycle trailer pivot assembly can comprise first and second yoke arms with respective first and second end portions and a pivot coupling the first end portion of each yoke arm to a bicycle trailer frame. The first end portions the yoke arms comprise respective first and second hinge portions that interfit and that receive a hinge pin that couples the first end portions together and to the bicycle trailer frame for pivoting about an upright axis. The first and second hinge portion comprise respective stops positioned to engage one another to limit the maximum distance to which the second end portions of the first and second yoke arms can be spread apart. The first and second hinge portions can comprise respective stops that limit both the maximum and minimum spread apart positions of the second end portions of the yoke arms.

A suspension system is provided for a sidecar of a motorcycle, which includes a sidecar frame and a wheel with an axle. The suspension system can include, a support frame pivotally secured to the sidecar frame, and a trailing link pivotally secured to the support frame at a leading end of the trailing link. A trailing end of the trailing link can be configured to trail behind the leading end of the trailing link relative to a direction of forward motion of the sidecar. The trailing end of the trailing link being configured to rotatably support the axle of the wheel.