Electromechanical transformer

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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Details

C310S083000

Reexamination Certificate

active

08004137

ABSTRACT:
A system and method for moving an object is disclosed. In one aspect, there is a device for moving an object. The device comprises a penetrating structure comprising an externally threaded surface. The device further comprises a receiving structure comprising an internally threaded cylinder surrounding the penetrating structure. The device further comprises a source of magnetic flux configured to magnetize the externally threaded surface with a first polarity and to magnetize the internally threaded cylinder with a second polarity that is different from the first polarity. The device further comprises a conductor positioned between the penetrating structure and the receiving structure configured to conduct an electric current. The device further comprises a sensor configured to determine the radial position of the penetrating structure with respect to the receiving structure. The device further comprises a controller configured to control the electric current in the conductor based on the determined radial position.

REFERENCES:
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patent: 3824420 (1974-07-01), Stegeman et al.
patent: 3865442 (1975-02-01), Studer
patent: 4000929 (1977-01-01), Studer
patent: 4006862 (1977-02-01), Shively et al.
patent: 4145625 (1979-03-01), Seilly
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patent: 7176590 (2007-02-01), Fujimoto
patent: 7374013 (2008-05-01), Mizuhara et al.
patent: 7520192 (2009-04-01), Mock
patent: 7617779 (2009-11-01), Studer
patent: 2004/0027020 (2004-02-01), Newcomb
patent: 1560320 (2005-08-01), None
patent: WO 2004042902 (2004-05-01), None
Studer, “Magnetic Bearings for Spacecraft,” NAGA/GSFC X 721-72-56, (Jan. 1972) (pp. 1-6, total in 9 pages).

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