A walker-shaped hoverboard attachment provides a center platform having a cavity and a rim around the cavity configured to rest on either side of a hoverboard's upper surface. Support rails and crossbars collectively configured as a walker may be fixedly connected to the platform. One or more brakes on one or more grips may enable a user to control the hoverboard while a user is standing on the platform.

A support assembly for use with snow sports boards includes a base configured to be attached to the snow sports board. A frame has a first portion extending downward and a second portion extending rearward from the first portion. A seat is mounted on the second portion of the frame. A shock absorber extends between the base and the first portion of the frame. During use, the support assembly is configured to support a rider sitting on the seat in a face-forward position with the rider's knees vertically below and forward of the rider's hips.

A method of operating an exoskeleton system that includes obtaining a first set of sensor data from one or more sensors associated with one or more leg actuator units of an exoskeleton system during a user activity, the first set of sensor data indicating a first configuration state of the one or more actuator units; determining, based at least in part on the first set of obtained sensor data, to change configuration of the one or more leg actuator units to a second configuration state to support a user during the user activity; and introducing fluid to one or more fluidic actuators of the one or more leg actuator units to generate the second configuration state by causing the one or more fluidic actuators to apply force at the one or more actuator units.

Disclosed is a support and suspension assembly for a snow sports board. The assembly includes a base configured to be attached to a snow sports board and a frame above the base. The frame includes a first portion extending vertically upward or upward and forward to an upper end. The frame further includes a second portion extending generally rearward from the upper end of the first portion. A seat is on the second portion of the frame. A shock absorber is connected between the base and the frame. A linkage assembly is pivotably connected between the base and the first portion of the frame.

A support assembly for use with snow sports boards includes a base configured to be attached to the snow sports board. A frame has a first portion extending downward and a second portion extending rearward from the first portion. A seat is mounted on the second portion of the frame. A shock absorber extends between the base and the first portion of the frame. During use, the support assembly is configured to support a rider sitting on the seat in a face-forward position with the rider's knees vertically below and forward of the rider's hips.

A parallelogram ski brace assembly operational with skis to maintain the skis parallel relative to each, and in close proximity to each other as the skis move laterally and in an up-and-down motion is useful for skiers with impaired lower extremity control. A pair of ski plates detachably locks into the skis. Pair of boot plates receives the boots of the skier. A pair of risers joins the ski plate to the boot plate, clearing the boot plate from the skis. A pair of lateral bars terminates at a pair of terminal apertures. Two pairs of vertical axles extend through the terminal apertures, and rotate about the lateral bars. Two pairs of linkage bars extend horizontally between the vertical axles. The linkage bars enable two degrees of freedom so that the skis remain in proximity, parallel, and move vertically relative to each other.

A chair-shaped hoverboard attachment may comprise at least one chair atop a platform having at least one wheel on the platform's underside, wherein the platform contains a control box and a removable hoverboard attachment element, such as a strap. In some embodiments, one or more control rods with brake controls may extend from the platform to within reach of the chair and may be configured to control the hoverboard.

A walker-shaped hoverboard attachment provides a center platform having a cavity and a rim around the cavity configured to rest on either side of a hoverboard's upper surface. Support rails and crossbars collectively configured as a walker may be fixedly connected to the platform. One or more brakes on one or more grips may enable a user to control the hoverboard while a user is standing on the platform.

A sit ski for an athlete includes a ski, a bucket disposed above the ski and configured to support the athlete, and a suspension disposed between the ski and the bucket. The suspension includes a support frame coupled to the ski, a first rotatable member rotatably coupled to the bucket and to the support frame, a second rotatable member rotatably coupled to the bucket and to the support frame, a shock coupled to the bucket and to the support frame, and a bump stop configured to contact the bucket.

Disclosed is a support and suspension assembly for a snow sports board. The assembly includes a base configured to be attached to a snow sports board and a frame above the base. The frame includes a first portion extending vertically upward or upward and forward to an upper end. The frame further includes a second portion extending generally rearward from the upper end of the first portion. A seat is on the second portion of the frame. A shock absorber is connected between the base and the frame. A linkage assembly is pivotably connected between the base and the first portion of the frame.