Patent ID: 8734132

Claim:
A pump, comprising: (a) a molded concrete base, said molded concrete base having formed therein: (i) first, second, and third lower cavities; and (ii) a fulcrum; said molded concrete base having embedded therein: (i) a first pipe having first and second outlets connecting respectively to said first and second lower cavities; (ii) a second pipe having an inlet for connecting to said first lower cavity and an outlet for connecting to said third lower cavity; and (iii) a third pipe having an inlet for connecting to said second lower cavity and an outlet for connecting to said third lower cavity; (b) first and second single valves secured respectively to the first and second lower cavities for selectively opening and closing the first and second outlets of said first pipe during alternate half cycles of said pump; (c) a double valve secured to the third lower cavity for selectively opening and closing the outlet of said second pipe and the outlet of said third pipe during alternate half cycles of said pump; (d) first, second, and third top portions; (e) first and second diaphragms, said first diaphragm being secured between said first top portion and said concrete base and said second diaphragm being secured between said second top portion and said concrete base; (f) an output chamber formed by securing the third top portion to the third lower cavity, said output chamber having an outlet; (g) a pumping platform, said pumping platform, comprising: (i) a pivot for engaging the fulcrum of the concrete base; and (ii) a lever having first and second portions extending respectively to either side of said pivot; and (h) first and second driving rods, the first driving rod being secured to the first portion of said lever and to the first diaphragm, and the second driving rod being secured to the second portion of the lever and to the second diaphragm.