Dual ratio drive for rotary shear

Cutting – Cutting motion of tool has component in direction of moving... – With tool speed regulator

Reexamination Certificate

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Details

C083S345000, C083S674000, C192S070200

Reexamination Certificate

active

07823492

ABSTRACT:
A dual ratio drive for a rotary sheer comprises a parallel pair of first shafts carrying freely rotatable first gears. A pair of second shafts are rotatable about axes parallel to the axes of the first shafts. Each second shaft carries a shear blade, and a second gear in meshed relationship with one of the first gears. A drive shaft is connectable to one of the second shafts by a first gear set having a high speed ratio, and is connectable to one of the first shafts by a second gear set having a low speed ratio. A clutch alternately engages one or the other of the first and second gear sets to drive the second shafts and their respective shear blades at the different speeds.

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patent: 2035698 (1972-01-01), None
patent: 1072333 (2001-01-01), None
patent: WO 03/022471 (2003-03-01), None

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