Low flow-rate pump
Patent 5769069 Issued on June 23, 1998. Estimated Expiration Date: 
June 23, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 23, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus for use with delicate fluids Method and apparatus for providing differential temperature thermostat control for solar hot water systems Fluid pump with magnetically levitated impeller Patent #: 5195877 InventorAssigneeApplicationNo. 471826 filed on 06/07/1995US Classes:126/634, With means to convey fluent medium through collector415/102, Towards each other and common exhaust415/214.1, Casing having multiple parts releasably clamped (e.g., casing seal, etc.)417/356, Pump within armature417/423.7With specific motor detailsExaminersPrimary: Price, Carl D.Attorney, Agent or FirmForeign Patent References
International ClassesA61B 019/00F04D 013/06 F04B 017/00 AbstractA relatively power efficient, low flow-rate pump comprises an integral rotor-impeller on a hollow shaft which forms the rotational axis. The rotor-impeller is a permanently magnetized with alternating poles about its periphery faces and at least two channels extend through the rotor-impeller from the interior of the hollow shaft to the periphery of the rotor-impeller. The diameter of the rotor-impeller is in the range of from about 5 mm to about 30 mm and the operating rotational speed of the rotor-impeller is from about 10,000 RPM to about 50,000 RPM.Field of SearchWith specific motor detailsHaving bearing With specific housing details Pump within armature Pump rotor intermediate coaxial motor rotors ROTARY BLOOD PUMP Towards each other and common exhaust Casing having multiple parts releasably clamped (e.g., casing seal, etc.) With means to convey fluent medium through collector | |
