Title:
CROWN TIGHTENING TOOL
Document Type and Number:
WIPO Patent Application WO/2007/135892
Kind Code:
A1
Abstract:
A crown tightening tool (10) not tightened a crown (5) with torque greater than
or equal to a predetermined level. The crown tightening tool (10) has an engagement
section (11) engaging with the crown (5) and an operation handle (18) for turning
the engagement section (11). The engagement section (11) is formed of resin
and has a recess (14) engageable with the crown (5). The recess (14) has an engagement
female section (141) engageable with the crown (5) and a clearance section (142)
having a greater diameter than the engagement female section (141). The engagement
female section (141) is field-formed, modeling the outer peripheral surface
of the crown (5). The clearance section (142) is divergent in form expanding
from an end of the engagement female section (141) toward the crown side surface.
Inventors:
OYABU KIMIKO (JP)
Application Number:
PCT/JP2007/059927
Publication Date:
November 29, 2007
Filing Date:
May 15, 2007
Export Citation:
Assignee:
CORP YUUBIDO (JP)
OYABU KIMIKO (JP)
OYABU KIMIKO (JP)
International Classes:
G04D1/02; B25B13/06; B25B13/48
Foreign References:
| JP2002257957A | 2002-09-11 | |||
| JPS4831039Y1 | 1973-09-21 | |||
| JP2004101288A | 2004-04-02 |
Attorney, Agent or Firm:
IIDA, Akio et al. (Marunouchi 2-chomeNaka-ku, Nagoya-shi, Aichi 02, JP)
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