A PUMP HAVING A STATIONARY HELICAL SPIRAL FLANGE AND A SLOTTED IMPELLER SHAFT ROTATABLE WITHIN

摘要

A pump (10) for transfer of volumes of a low viscosity liquid from a source; said pump (10) including a helical spiral flange (14) fixed within a stationary cylindrical body (12); outer edges (16) of said flange in contact with an inner surface (18) of said cylindrical body (12); internal edges (20) of said flange defining a central cylindrical passage coaxial with said cylindrical body (12); said pump (10) further including a central impeller shaft (24) rotatable within said central cylindrical passage; said shaft provided with a plurality of slots or grooves (26).