US PATENT SUBCLASS 483 / 20
.~.~.~ Workpiece holder (e.g., chuck or chuck jaw, collet, etc.)

Current as of: June, 1999
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483 /   HD   TOOL CHANGING

16  DF  INCLUDING MACHINE TOOL OR COMPONENT {3}
17  DF  .~ Rotating work machine tool (e.g., screw machine, lathe, etc.) {4}
19  DF  .~.~ Tool having specific mounting or work treating feature {2}
20.~.~.~ Workpiece holder (e.g., chuck or chuck jaw, collet, etc.)

DEFINITION

Classification: 483/20

Workpiece holder (e.g., chuck or chuck jaw, collet, etc.):

(under subclass 19) Apparatus wherein the implement consists of a means for attaching a workpiece to the machine tool.

(1) Note. The "implement" of this subclass is not the type structure normally considered to be a "tool" of the class title; however, the structure for moving a workpiece holder is so similar to that of this class that it is deemed to be best collected with the "tool changing" apparatus of this class.

SEE OR SEARCH CLASS

279, Chucks or Sockets, art collection 901 for a chuck or chuck jaw changer.