Electric motor
Patent 6788022 Issued on September 7, 2004. Estimated Expiration Date: 
October 21, 2022. 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.
October 21, 2022. 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 References 2796571 Driving means formed by induction motor and method for starting the same Compact bearingless machine drive system Patent #: 6034456 InventorsAssigneeApplicationNo. 10277059 filed on 10/21/2002US Classes:318/772, Plural speed310/112Plural units, structurally unitedExaminersPrimary: Ro, BentsuAttorney, Agent or FirmInternational ClassH02K 1736AbstractAn electric motor controllable to operate at a number of distinct output speeds. The electric motor includes a single set of mechanical parts in combination with a multiple sets of electromagnetic parts having different configurations, where the number of electromagnetic parts corresponds to the number of distinct output speeds of the electric motor. | |
