Sealing and pumping means and methods environmentally leak-proof pump with misting chamber defined therein

A motor driven pump comprising:

• an environmentally leak-proof, motor housing having located therein a motor for rotatably driving a rotating shaft, said shaft extending from said motor and being sealed within a pump housing;
• said pump housing being sealably connected to said motor housing, said pump housing including a pump chamber in which fluid is pumped between a fluid inlet and a fluid outlet;
• a fluid impeller disposed within said pump chamber, said impeller for pumping a fluid from said fluid inlet to said fluid outlet, said impeller being affixed to said rotating shaft;
• a fluid passageway disposed between and communicating with said pump chamber and a fluid chamber, said fluid chamber circumferentially surrounding said rotating shaft;
• a fluid sealing device disposed axially along said shaft between said fluid chamber and said pump chamber, said fluid sealing device for inhibiting the flow of fluid from said pump chamber toward said fluid chamber, and wherein said sealing device circumferentially surrounds said rotating shaft;
• a drainage orifice defined in said pump housing, said drainage orifice being defined within the bottom portion of said fluid chamber so as to allow fluid passing into said fluid chamber to flow from said chamber by way of gravity through said drainage orifice, thereby preventing said fluid from making its way into said motor housing;
• an annular fluid seal disposed axially along said shaft between said motor and said fluid chamber, said annular fluid seal including a rotating flange affixed to said shaft so as to rotate therewith and a stationary annular engaging member, said stationary annular engaging member having an engagement surface for sealingly engaging a radially extending rotatable sealing surface of said rotating flange;
• and
• annular bearing means disposed axially between said motor and said annular fluid seal, said bearing means for rotatably supporting said shaft.