Patent ID: 8066477

Claim:
A pump apparatus for pumping a viscous fluid upwardly, comprising: (a) a hollow, cylindrical body disposed about a central longitudinal vertical axis, having aperture means proximate a lower extremity thereof to allow ingress of said viscous fluid about an exterior periphery thereof and to direct said viscous fluid upwardly along said longitudinal axis and within said cylindrical body; said hollow cylindrical body comprising therewithin: (b) a plurality of rotatable arcuate vane members, situated within said hollow cylindrical body and above said lower extremity and symmetrically radially disposed about said longitudinal axis, adapted for rotation about said longitudinal axis, each of said vane members extending radially outwardly from a position proximate said longitudinal axis to a position proximate an inner periphery of said hollow cylindrical body; (c) a flat, horizontally disposed disc member, disposed immediately above said vane members, perpendicularly disposed to said longitudinal axis; (d) a viscous fluid egress area proximate a radial extremity of said vane members and said disc member and situated about said periphery of said hollow cylindrical body; and (e) each of said vane members possessing a radially-extending horizontal slot, extending from proximate a mid-section of each of said vane members radially outwardly to a position proximate a radial extremity of each of said vane members.