Vehicle wheel suspension assembly

A self-contained, demountable vehicle wheel suspension assembly capable of moving a vehicle wheel between a surface-engaging position and a retracted position, said assembly comprising:

• a support structure, hanger bracket means including a releasable clamp for removably attaching said support structure to a vehicle, an arm for rotatably supporting a vehicle wheel, said arm being pivotally connected to said support structure to permit reciprocal movement of said arm in a generally vertical plane, resilient means supported by said support structure, and combined connecting and lifting means connecting the free end of said arm to said resilient means;
• said connecting and lifting means being movable between a first mode in which the vehicle wheel is in a surface-engaging position and a second mode in which the vehicle wheel is in a retracted position, said connecting and lifting means including a collapsible link connected between said arm and said resilient means which maintains a fixed distance of separation between the points of connection when said connecting and lifting means is in said first mode and causes a reduction in the distance of separation upon collapse when said connecting and lifting means is in said second mode to move said arm toward said resilient means to thereby move the vehicle wheel to a retracted position and control means wholly supported by said assembly and operatively connected to said collapsible link for selectively moving said means between said first and second modes.