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Title:
FREE BALL BEARING, SUPPORT TABLE, CONVEYANCE FACILITY, AND TURNTABLE
Document Type and Number:
WIPO Patent Application WO/2010/131469
Kind Code:
A1
Abstract:
A free ball bearing (110) comprises a support ball-pressing ring (50) disposed within a housing (30), and the support ball-pressing ring (50) is configured in such a manner that, in order to restrict or suppress the rolling of support balls (41,..., 41) arranged on a hemispherical recessed surface (21) or in order to release the restriction or suppression, the support ball-pressing ring (50) can move from a position (pressing position) at which the rolling of the support balls (41,..., 41) is restricted or suppressed, to a position (standby position) at which the restriction or suppression of the rolling of the support balls (41,..., 41) is released. The support ball-pressing ring (50) comprises a cylindrical pressing section (55) which, as the support ball-pressing ring (50) moves, can enter and exit the space between the hemispherical recessed surface (21) and a main ball (42) (said space being the space in which the support balls (41,..., 41) are arranged). When the support ball-pressing ring (50) is located at the pressing position, the pressing section (55) restricts or suppresses the rolling of the support balls (41,..., 41), and when the support ball-pressing ring (50) is located at the standby position, the restriction or suppression of the support balls (41,..., 41) is released.

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Inventors:
IGUCHI, Kaoru (1-22-9, Minamiohizumi, Nerima-k, Tokyo 64, 〒1780064, JP)
Application Number:
JP2010/003244
Publication Date:
November 18, 2010
Filing Date:
May 13, 2010
Export Citation:
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Assignee:
IGUCHI KIKO CO., LTD. (1-22-9, Minamiohizumi Nerima-k, Tokyo 64, 〒1780064, JP)
株式会社井口機工製作所 (〒64 東京都練馬区南大泉１－２２－９ Tokyo, 〒1780064, JP)
International Classes:
B65G49/06; B65G13/00; B65G39/02; B65G49/07; F16C19/50; F16C29/04; H01L21/677
Attorney, Agent or Firm:
SHIGA, Masatake et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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Claims:



 
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