Convertible child car seat/stroller apparatus

A convertible child car seat/stroller apparatus for use as a child's seat with a vehicle and a stroller, said apparatus comprising:

• a) a seat assembly comprising a seat area;
• b) a handle affixed to said seat assembly to permit said convertible apparatus to be manually lifted;
• c) a collapsible wheel assembly disposable between a retracted position wherein said convertible apparatus serves as said child's car seat and an extended position wherein said convertible apparatus serves as said stroller, said wheel assembly comprising first and second front legs and first and second rear legs, each of said legs having a first end pivotally connected to said seat assembly and a second end rotatively connected to a wheel;
• d) manually graspable means moveable between a first point corresponding to said retracted position and a second point corresponding to said extended position;
• e) collapsible means affixed to said graspable means and interconnected to each of said legs for disposing said wheel assembly in said retracted position when said graspable means is moved to its first point and for disposing said wheel assembly to said extended position when said graspable means is moved to its second point for stabilizing said wheels in their extended position against lateral forces;
• and
• (e) lock means for releasibly holding said wheel assembly in its retracted position and actuable for releasing said wheel assembly from its retracted position, said lock means including a movable latch member for engaging said graspable means when moved to said first point, said lock means affixed to said seat assembly in a sufficiently proximate relation to said handle to permit a user to manually grasp said handle and at the same time to manually engage said latch member to actuate said releasable lock means for releasing said wheel assembly from its retracted position to its extended position.