Dynamic pressure bearing device, and manufacturing method...

Bearings – Rotary bearing – Fluid bearing

Reexamination Certificate

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C384S121000

Reexamination Certificate

active

06966699

ABSTRACT:
It is an object of the present invention to provide a miniaturized, high-precision, easy, and low-cost dynamic pressure bearing device and a manufacturing method thereof. In manufacturing a dynamic pressure bearing device, a first and a second ring-shaped member are fixedly fitted to an outer peripheral surface of a rotating shaft member to constitute a rotating portion, an intermediate member is disposed between these members to constitute a fixed portion, a thrust bearing portion is formed in gaps between the first and second ring-shaped members and the intermediate member, and a journal bearing portion is formed in a gap between the rotating shaft member of the rotating portion and the intermediate member, the first and second ring-shaped members being fixed only with an adhesive applied on surfaces thereof which is to be fitted to the rotating shaft member.

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patent: 5580175 (1996-12-01), Polch et al.
patent: 5692840 (1997-12-01), Rhoton et al.
patent: 5743655 (1998-04-01), Slavin et al.
patent: 6190573 (2001-02-01), Ito
patent: 6300695 (2001-10-01), Neal
patent: 6390681 (2002-05-01), Nakazeki et al.
patent: 1 136 710 (2001-09-01), None
patent: A 10-96421 (1998-04-01), None

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