Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Reexamination Certificate
2006-09-28
2008-08-19
Banks, Derris H. (Department: 3725)
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
C072S390200
Reexamination Certificate
active
07412867
ABSTRACT:
The present invention relates to the tool for working tubes. The tool includes a body having hinged thereto a trigger for moving back-and-fourth, and which is connected to a support member supporting a working head. A drive device is provided for driving the support member mounted on the body and connected to the trigger. The support member includes a toothed rack, and the drive device includes a first toothed gearwheel having a first module and meshing with the rack, a drive pawl serving to advance the rack forwards, and a retaining pawl preventing it from moving backwards. The drive device includes a second toothed gearwheel having a second module smaller than the first module, the second gear-wheel being secured to the first gearwheel, the drive pawl and the retaining pawl being engaged with the second gearwheel.
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patent: 6931908 (2005-08-01), Mitson
patent: 7219574 (2007-05-01), Ichida et al.
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patent: 2 626 505 (1989-08-01), None
Banks Derris H.
Bonk Teresa
Virax
Wenderoth , Lind & Ponack, L.L.P.
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