Abstract: A support system for a wheeled vehicle that includes a housing mounted on the vehicle, a pair of support arms pivotally mounted on the housing, wheels mounted on the support arms for engaging a supporting surface, and a crank arm attached to each support arm. Locking fittings pivotally mounted on the housing carry teeth engageable with teeth mounted on the crank arms to hold the crank arms in selected positions. The locking fittings are withdrawn from tooth engaged position to release the support arms for swinging movement. The support arms are swung between a raised position and a lowered vehicle supporting position. The locking fittings hold the support arms in raised position or in selected lowered position when released.

Abstract: A support system for a wheeled vehicle. A housing is mounted on the vehicle. A pair of support arms is pivotally mounted on the housing. Wheels mounted on the support arms can engage a supporting surface. A crank arm is attached to each support arm. An actuator advances transversely of pivots of the support arms. The crank arms are linked to the actuator. A locking arm releasably connects pivots between the links and the crank arms to hold the support arms in a vehicle supporting position.