US PATENT SUBCLASS 407 / 12
ROTARY BROACH
Current as of: June, 1999
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DEFINITION
Classification: 407/12
ROTARY BROACH:
(under the class definition) Device adapted to turn about an axis and including a plurality of cutting edges positioned peripherally about the axis and being of progressively greater distance from the axis, such that, as the device
turns about that axis, a first cutting edge makes a cutting arc, followed by a second cutting edge that makes a cutting arc or larger radius; to shape work by a series of cutting arcs without relative movement between the axis about which it turns and the work.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13, for an elongated broach that moves along a straight line with respect to a workpiece and rotates so that the cutting edges thereof define a helical path.
