Rotary apparatus including a rotation shaft and sleeve...

Details Rotary apparatus including a rotation shaft and sleeve... Rotary apparatus including a rotation shaft and sleeve...

2007-08-07

2007-08-07

Pham, Hai (Department: 2853)

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C347S224000

Reexamination Certificate

active

11019249

ABSTRACT:
A rotary apparatus for a polygon mirror has: a sleeve; a rotation shaft which is inserted into the sleeve; the polygon mirror which is fixed to the rotation shaft; a yoke which is fixed to the rotation shaft; permanent magnets which are fixed to the yoke; and a stator which is fixed to the sleeve, and which is opposed to the permanent magnets. Tapped portions are formed in a part of the outer circumference of the rotation shaft, and a part of the inner circumference of the sleeve, respectively. The tapped portions are temporarily engaged with each other in a process of inserting the rotation shaft into the sleeve. The rotation direction of the rotation shaft in a driving process is identical with that of the rotation shaft in the inserting process.

REFERENCES:
patent: 5270737 (1993-12-01), Nakasugi et al.
patent: 2003/0024102 (2003-02-01), Danish et al.
patent: 04-107313 (1992-04-01), None

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