Twisting and tightening mechanism in reinforcement binding machi

Details Twisting and tightening mechanism in reinforcement binding machi Twisting and tightening mechanism in reinforcement binding machi

1996-06-28

1999-02-16

Larson, Lowell A.

Wireworking

Joining wire

Implements

140 57, B21F 1504

Patent

active

058710361

ABSTRACT:
In a reinforcement binding machine in which a wire feed device feeds externally therefrom a wire for binding reinforcements and the wire fed out by the wire feed device is bent in a loop shape by a guide part, a twisting-and-tightening mechanism comprises: a pair of hooks being capable of opening and closing, for gripping in part the wire wound around the reinforcements in the loop shape; a driver for rotating the hooks in a direction to twist the wire gripped and for selectively moving the hooks toward or apart from the reinforcements with the wire wound therearound; and a coil spring for urging the hooks such that the hooks are normally spaced apart from the reinforcements.

REFERENCES:
patent: 4362192 (1982-12-01), Furlong et al.
patent: 4508030 (1985-04-01), Grenon
patent: 4610067 (1986-09-01), Hara
patent: 5279336 (1994-01-01), Kusakari et al.
patent: 5323816 (1994-06-01), Hoyaukin
patent: 5657799 (1997-08-01), Kusakari et al.
patent: 5678613 (1997-10-01), Murayama et al.
patent: 5694983 (1997-12-01), Kusakari et al.

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