KEY WRENCH

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 seco...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NOMURA Koya, IKADA Akira, KONO Toyohiko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	HAND TOOLS MANIPULATORS PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING
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Beschreibung
Zusammenfassung:	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