Pump driving mechanism

A driving mechanism for a fluid pump of the type comprising a fluid-conducting cylinder, said driving mechanism comprising:

• a pair of elastically flexible generally U-shaped leg means, each including first and second legs which flex toward and away from each other about a bend at which said first and second legs are joined, said first leg of each leg means being fixed at a free end thereof, with the free ends of said second legs opposing each other,
• a piston body coupled to said free ends of said second legs so as to be reciprocable in a fore-aft direction between said fixed free ends of said first legs, said piston body comprising a rigid generally rectangular shaped frame having opposing ends spaced in said fore-aft direction,
• a piston rod connected to said piston body and arranged to be reciprocable in said cylinder in a direction parallel to said fore-aft direction for pumping fluid through said cylinder, and
• elastically flexible arm means connected to said frame and disposed therewithin, said arm means including means connectible to an eccentric motor-driven shaft, said arm means being elastically flexible in directions transversely of said fore-aft reciprocable direction and being arranged to transmit motion to said frame in said fore-aft direction.