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US 2016/0047377 A1Published application
Positive displacement gear pump
AssigneeG.P.S. Green Power Solution SA
InventorFranco TOMMASINI
Life of this patent
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Abstract
A positive displacement pump has a casing with a central body and two closing lids, the central body being provided with two cylindrical communicating chambers, one suction pipe and one discharge pipe, and two rotors revolvingly mounted in the chambers of the central body and supported by shafts revolvingly mounted in the closing lids. The two rotors include a male rotor having only protuberances, not cavities, and a female rotor having only cavities, not teeth or protuberances.
Claims14
A positive displacement pump comprising:
- a casing that comprises 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,
- said two rotors comprise:
- a male rotor that only comprises at least one protuberance, not cavities, and
- a female rotor that only comprises at least one cavities, not protuberances or teeth,
- wherein the male rotor mesh with the female rotor, i.e. the at least one protuberance of the male rotor is engaged in the at least one cavities of the female rotor without contact between the two rotors, and the male rotor comprises a body provided with at least one seat and said at least one protuberance comprise of a sector comprising a base that is engaged in the seat of the body of the rotor.
3 more elements
Dependencies are inferred from the claim text.