Back to results
US 2016/0230760 A1Published application
Positive displacement gear pump
AssigneeGianpiero Pansolini
InventorFranco Tommasini
Life of this patent
Estimating the term…
Abstract
A positive displacement pump (1) comprises a casing with a central body (2) and two closing lids (20), said central body (2) being provided with two cylindrical communicating chambers (22, 23), one suction pipe (I) and one discharge pipe (O), and two rotors (3, 4) revolvingly mounted in said chambers (22, 23) of the central body and supported by shafts (5, 6) revolvingly mounted in said closing lids (20). The two rotors comprise: a male rotor (3) comprising only protuberances (30), not cavities, and a female rotor (4) comprising only cavities (40), not teeth or protuberances.
Claims20
A positive displacement pump comprising:
- a casing comprising a central body and two closing lids, said central body being provided with two communicating cylindrical chambers, one suction pipe and one discharge pipe, and
- two rotors revolvingly mounted in said chambers of the central body and supported by corresponding shafts revolvingly mounted in said closing lids,
- characterized in that said two rotors comprise:
- a male rotor having an outer surface that comprises protuberances said outer surface being substantially free of cavities, and
- a female rotor having an outer surface that comprises cavities said outer surface being substantially free of protuberances and teeth,
- wherein the protuberances of the male rotor are engaged in the cavities of the female rotor without contact between the two rotors.
3 more elements
Dependencies are inferred from the claim text.