Patent ID: 7048513

Claim:
A gas pressure driven fluid pump, said pump comprising: a pump tank having a liquid inlet and a liquid outlet; a float assembly including a buoyant float carried within the interior of said pump tank, said float being operable to move between a low level position and a high level position; a compression spring having a first end and a second end, said first end being operatively connected to said float assembly; an anchor located at said second end of said compression spring, said anchor having a socket; a pivot member operatively connected to said second end of said compression spring via a tip portion engaging said socket of said anchor, said pivot member rotating to a first position when said float reaches said high level position and said pivot member rotating to a second position when said float reaches said low level position; and a valve assembly connected to said pivot member, said valve assembly being switchable between motive porting and exhaust porting in a snap over fashion due to rotation of said pivot member between said first position and said second position.