Title:
KEY WRENCH
Document Type and Number:
WIPO Patent Application WO/2017/183237
Kind Code:
A1
Abstract:
In the present invention, N is defined as any natural number of 3 or greater. A key wrench is provided with a key portion (5-2) capable of engaging in an N-gonal hole (2), and a proximal-end portion (5-1). The key portion (5-2) is provided with N side faces including a first side face (50-1), a second side face (50-2), and an Nth side face (50-N). The first side face (50-1) is a tapered face, and the Nth side face (50-N) is a non-tapered face. A key wrench is thereby provided in which deformation of the surface of the hole is suppressed and the occurrence of an excessive come-out load is suppressed.
Inventors:
IKADA AKIRA (JP)
KONO TOYOHIKO (JP)
NOMURA KOYA (JP)
KONO TOYOHIKO (JP)
NOMURA KOYA (JP)
Application Number:
PCT/JP2017/000282
Publication Date:
October 26, 2017
Filing Date:
January 06, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B25B13/54
Foreign References:
| JP2012518447A | 2012-08-16 | |||
| US3894450A | 1975-07-15 | |||
| DE10107751A1 | 2002-08-22 | |||
| JP2000052264A | 2000-02-22 | |||
| JP2016085373A | 2016-05-19 |
Other References:
See also references of EP 3412413A4
Attorney, Agent or Firm:
KUDOH Minoru (JP)
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