US PATENT SUBCLASS 72 / 307
.~.~ With means to advance elongated work (e.g., pipe elbow crimper)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


72 /   HD   METAL DEFORMING

293  DF  BY USE OF NON-DEFORMING WORK-GRIPPING CLAMP AND RELATIVELY MOVABLE CLAMP, TOOL OR WORK-FORCER {9}
306  DF  .~ Plural or complex apparatus (e.g., with plural operations) {1}
307.~.~ With means to advance elongated work (e.g., pipe elbow crimper)

DEFINITION

Classification: 72/307

With means to advance elongated work (e.g., pipe elbow crimper):

(under subclass 306) Device comprising structure arranged to propel stock material or a relatively long blank in the direction of its length toward the zone of the metal-deforming operation.

(1) Note. A typical device of this subclass crimps successive portions of an intermittently fed tubular blank to form a pipe elbow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

405.01+, for means to feed work between plural tool stations.

419+, for means to handle work or product.