Measuring and testing – Rotor unbalance – Dynamic
Reexamination Certificate
2005-01-25
2008-09-23
Williams, Hezron E. (Department: 2856)
Measuring and testing
Rotor unbalance
Dynamic
C073S459000, C073S066000
Reexamination Certificate
active
07426858
ABSTRACT:
A method of manufacturing an electrical suction unit for use in a vacuum cleaner includes a turbine unit and an electrical motor with a rotor and a stator. The turbine unit is attached to the rotor and forms, together with the rotor, a rotatable part of the suction unit, which is rotatable about an axis of rotation. An amount of material is removed from the rotor and from the turbine unit to torque-balance the rotatable part of the suction unit. In this manner, the amount of material to be removed from the rotor to torque-balance the rotatable part is considerably reduced, so that the adverse influence of the removal of the material from the rotor on the performance of the electrical motor is limited.
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Koninklijke Philips Electronics , N.V.
Shah Samir M.
Williams Hezron E.
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