固定ナット

Japanese Patent JP4519514

B2

A fastening nut (10; 30) has an operation member (12; 34), a female thread member (13; 31a) and a control device. The operation member (12; 34) operable by an operator to rotate in a fastening direction and a loosening direction. The control device is coupled between the operation member (12; 34) and the female thread member (13; 31a) and includes a plurality of movable members (13; 33), such as nut segments (13) and wedge members (33), and a plurality of control members (14; 35). The movable members (13; 33) are arranged in a circumferential direction about a nut axis and each movable between a first position and a second position along a radial direction from the nut axis. The first positions enables fastening of the female thread member (13; 31a) onto the male thread member (3b) and the second position enables loosening of the female thread member (13; 31a). The control members (14; 35) are interposed between the operation member (12; 34) and each movable member (13; 33). The control members (14; 35) prevent the movement of each movable member (13; 33) from the first position to the second position when the operation member (12; 34) rotates in the fastening direction. The control members (14; 35) permit the movement of each movable member (13; 33) from the first position to the second position when the operation member (12; 34) rotates in the loosening direction.

JP6971545

Rotatable cutting tool and wrench for the rotatable cutting tool

Yuji Takahashi
Tori Horiyama
Shinsuke Mori
Shinji Hirabayashi

JP2004133709A

August 04, 2010

April 28, 2004

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Makita Corporation

B24B45/00; B24B23/02; B27B5/32; F16D1/06

JP10309612A
JP2501813A
JP4118972U
JP62052313U
JP11066940A

Hidehiko Okada
Tetsuo Fukuda
Tatsuhiko Inukai
Takashi Ishioka

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