Abstract: The disclosed embodiments are directed to a transportation device, such as a skate. The transportation device may include a frame configured to support at least a portion of a user, and a support system configured to support the frame above the ground. The support system may include a first wheel connected to the frame, a second wheel connected to the frame, and a suspension system connected to the frame and positioned between the first and second wheel. The suspension system may include a rear wheel pivotally connected to a first portion of the frame, and a shock absorber connected between the rear wheel and a second portion of the frame. The shock absorber may be configured to dampen movement by the rear wheel with respect to the first portion of the frame.

Abstract: A bicycle includes a top tube coupled with a front wheel and with at least a first pivot pair, the first pivot pair being rotatably coupled with a first end of a first arm and a first end of a second arm and a rear chainstay coupled with a rear wheel and with at least a second pivot pair, the second pivot pair being rotatably coupled with a second end of the first arm and a second end of the second arm. The first and second pivot pairs and the first and second arms enable the rear chainstay to move towards the top tube to a first position for folding the bicycle, and to move away from the top tube to a second position for unfolding the bicycle.

Abstract: The disclosed embodiments are directed to a transportation device, such as a skate. The transportation device may include a frame configured to support at least a portion of a user, and a support system configured to support the frame above the ground. The support system may include a first wheel connected to the frame, a second wheel connected to the frame, and a suspension system connected to the frame and positioned between the first and second wheel. The suspension system may include a rear wheel pivotally connected to a first portion of the frame, and a shock absorber connected between the rear wheel and a second portion of the frame. The shock absorber may be configured to dampen movement by the rear wheel with respect to the first portion of the frame.