US PATENT SUBCLASS 409 / 248
.~ With means to select cutter or to select or modify cutter drive


Current as of: June, 1999
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409 /   HD   GEAR CUTTING, MILLING, OR PLANING

243  DF  BROACHING {20}
248.~ With means to select cutter or to select or modify cutter drive


DEFINITION

Classification: 409/248

With means to select cutter or to select or modify cutter drive:

(under subclass 243) Apparatus including (1) a plurality of drive means to power a broaching machine and means to provide a choice of which drive means is functional, (2) a plurality of cutting tools and means to provide a choice of which

receives the driving force, or (3) means to significantly vary the drive of the broaching machine.

(1) Note. Under clause (3) a significant variation may, for instance, involve (a) a choice of either continuous or unicyclic operation or (b) variation of the limits of broach acceleration or deceleration either during the cutting stroke or during the idle return stroke.

(2) Note. Excluded from this subclass is a patent directed to variable pulley or gear shift transmission means limited to a straight-line uniform speed of tool operation. Such a patent will be found in subclasses 280+.

SEE OR SEARCH CLASS

483, Tool Changing,

28+, for a reciprocating tool machine tool combined with a tool transfer means.