Patent ID: 7275469
Filing Date: 2007-10-02
Classification: B26D,Y10S,Y10T

Abstract:
1. A method for cutting tubing, comprising the steps of: a. causing a first drive element, having a passage formed axially therethrough, to rotate at a first selected speed in a selected direction; b. causing a second drive element, having a passage formed axially therethrough, to rotate at a second selected speed in the selected direction, wherein the first and the second drive elements are coaxial; c. mounting a plurality of driven elements in rotational engagement with the first and second drive elements such that when the first and second selected speeds are synchronous, the driven elements do not rotate relative to the first and second drive elements, and when the first and second selected speeds are non-synchronous, the driven elements rotate relative to the first and second drive elements; d. providing a blade affixed to each of the plurality of driven elements; e. causing the first and second drive elements to rotate at synchronous speeds for a first time interval; f. causing the first and second drive elements to rotate at non-synchronous speeds for a second time interval; and g. causing the first and second drive elements to rotate at synchronous speeds for a third time interval.