Optical pick-up device with respective flush screws...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system

Reexamination Certificate

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Details

C369S044150, C720S682000, C720S683000, C720S685000

Reexamination Certificate

active

10982897

ABSTRACT:
An optical pick-up device having cheap and simple structure capable of precisely positioning members assembled upon an actuator base makes use of respective flush screw members for a magnet holder and for a printed-circuit board eccentrically positioned between an actuator base and a magnet holder, together with between the printed-circuit board and the support member. The flush screw member is inserted through the holder hole, firmly secured into the screw hole, and thereby prevents the pick-up device from being loosened, because of being provided with a predetermined eccentric distance between center axles of the screw hole and the holder hole. Likewise, a triangle-shape opening of the printed-circuit board is adapted to receive the board flush screw, so that a slant tapered surface of a board flush head of the board flush screw acts as an eccentrically fastener for fixture and positioning of the support member and the printed-circuit board.

REFERENCES:
patent: 5715231 (1998-02-01), Nagasato et al.
patent: 6988275 (2006-01-01), Mitsumori et al.
patent: 2001/0038581 (2001-11-01), Kawano et al.
patent: 2002/0071357 (2002-06-01), Takahashi et al.
patent: 2003/0161252 (2003-08-01), Sugawara
patent: 2000-222751 (2000-08-01), None
patent: 2001-202642 (2001-07-01), None

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