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US 7,766,058 B2Granted
Method and apparatus for transferring liquids
OwnerJim Constantinventor
Life of this patent
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Abstract
A method and system for replacing used oil in a vat, the system including a nozzle having inner and outer concentric passageways, the outer passageway being connected to a supply of replacement oil, pumps associated with each of the inner and outer passageways, with a valve structure and a nozzle, the valve structure having biasing means. The system is suitable for pumping hot oil from a vat such as used in commercial kitchens to a storage receptacle and subsequently pumping replacement oil into the vat.
Claims3
A system for replacing used oil in a vat, the system comprising:
- a nozzle having inner and outer concentric passageways;
- said outer passageway being connected to a supply of replacement oil;
- pump means associated with each of said inner and outer passageways;
- a plunger extending about said inner passageway, said plunger being moveable between an open position to permit fluid passage to said outer passageway and a closed position wherein said outer passageway is sealed;
- and
- a check valve on said inner passageway.
3 more elements
Dependencies are inferred from the claim text.