Compact portable tire servicing device

Claim 1

A compact portable pumping and siphoning device for selectively dispensing and evacuating a liquid to and from a receptacle comprising a base, ground engaging wheels connected to said base for supporting the same for travel, an elongate handle secured to said base to facilitate movement of said device, a tank mounted on said base, said tank having an upper wall, a lower wall and upstanding peripheral walls, a motor driven pump having an inlet and an outlet, an electric circuit including a source of direct current and said motor driven pump, and including a switch for selectively energizing and de-energizing said electric circuit, a control valve connected in flow controlling relation with the outlet of said pump, said valve being adjustable between a fill and an evacuation position, a supply conduit having one end thereof connected in communicating relation with said tank adjacent the upper wall thereof and having its other end adapted to communicate with a reservoir of liquid, an elongate outlet conduit having one end thereof connected in communicating relation to the tank adjacent the upper wall thereof and having its other end connected in communicating relation with the inlet of said pump, the connection between said outlet conduit and said tank being located at a lower level than the connection between the supply conduit and said tank, said tank having a transverse wall extending transversely of the interior of the tank from the upper wall thereof to divide the interior of said tank into a pair of compartments, said compartments intercommunicating with each other adjacent the lower portion of said tank interior, said outlet conduit communicating directly with one of said chambers, and said supply conduit communicating directly with the other of said chambers.