US PATENT SUBCLASS 72 / 393
.~ Embodying three or more tools (e.g., tube expander)


Current as of: June, 1999
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72 /   HD   METAL DEFORMING

392  DF  BY RELATIVELY RECEDING WORK-ENGAGING TOOL-FACES (E.G., FOR STRETCHING) {1}
393.~ Embodying three or more tools (e.g., tube expander)


DEFINITION

Classification: 72/393

Embodying three or more tools (e.g., tube expander):

(under subclass 392) Device wherein two or more of said tools are movable with respect to another said tool.

(1) Note. For example, the device of this subclass may comprise three or more segmental tools expansible by means of a central wedge to flare the end portion of a tube or other hollow work.

(2) Note. A similar arrangement of expansible tools, but acting within a closed-die, would be placed in subclasses 353.4+ if the outer die structure consisted of spaced tools, the combination would be placed in subclasses 400+ (opposed face tool-complex).

SEE OR SEARCH THIS CLASS, SUBCLASS:

58+, and 61+, for expansion of hollow work by pressurized fluent material.

120+, for metal deformation by radial outward motion of the tool elements of a rotating tool assembly.

355.2+, for a metal deformation by wedge- actuated, symmetrically expanding tools within a closed-die.

370.01+, for a process of tube reshaping by the use of an internal tool. 400+, for metal-deforming apparatus comprising two or more radially movable tools with coacting fixed tool, and see (2) Note, above.