Metal deforming – Process – Tube making or reshaping
Reexamination Certificate
2007-01-30
2007-01-30
Larson, Lowell A. (Department: 3725)
Metal deforming
Process
Tube making or reshaping
C072S370210, C029S893340
Reexamination Certificate
active
11235137
ABSTRACT:
A system for forging a rack bar from a blank pipe. A blank pipe1is held between dies2and3. Stockers7L and7R are arranged on respective sides of the die set. In the stockers7L and7R, left-handed shuttles6L1, 6L2, 6L3, . . . 6Lnand right-handed shuttles6R1, 6R2, 6R3. . . 6Rnare stored. First, a left-handed presser rod5L inserts the shuttles6L1to the blank pipe from the left-handed stocker7L. Then, a right-handed presser rod5R inserts the shuttles6R1to the blank pipe from the right-handed stocker7R, causing the shuttles6L1to be entrained and returned to the left-handed stocker7L. Vertical shift movement is alternately executed between the left-handed and right-handed stockers7L and7R, so that a shuttle of step-likely increased working height is selected for executing a working process.
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Bonk Teresa M.
Ditthavong & Mori, P.C.
Larson Lowell A.
Matsuoka Minako
Shiokawa Akimasa
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