| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Crank forming method | US3608184D | 1969-03-18 | US3608184A | 1971-09-28 | THUN ALFRED |
| A METHOD FOR MAKING A BICYCLE TREAD CRANK FROM A ROD INCLUDES THE STEPS OF FORMING A COLLAR IN THE CENTER OF AN ELONGATED ROD, SUBSEQUENTLY FORMING THREADS ON THE COLLAR, AND SUBSEQUENTLY BENDING THE FREE ENDS OF THE ROD IN DIRECTIONS OPPOSITE TO EACH OTHER TO FORM CRANKS.
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| 122 | Apparatus for cold and warm pressing of undercut prepressed bodies | US3566664D | 1968-06-18 | US3566664A | 1971-03-02 | SCHWEIZER HERBERT |
| DEVICE FOR PRESS FORMING WORKPIECES TO FORM PROTUBERANCES THEREON IN WHICH AN ANVIL BODY HAS A MATRIX MEMBER FIXED IN ONE END AND A MOVEABLE MATRIX MEMBER AXIALLY MOVEABLE INTO THE BODY AT THE OTHER END. RADIALLY MOVEABLE JAWS IN THE BODY ARE ACTUATED RADIALLY INWARDLY BY AXIAL MOVEMENT OF THE MOVEABLE MATRIX MEMBER INTO THE BODY SO AS TO EMBRACE A ROD-LIKE WORKPIECE WHICH HAS ONE END DISPOSED IN A HOLE IN EACH MATRIX MEMBER. FURTHER AXIAL MOVEMENT OF THE MOVEABLE MATRIX TAKES PLACE TOGETHER WITH THE JAWS SO THE WORKPIECE IS CAUSED TO CHANGE SHAPE ONLY IN THE UNSUPPORTED REGION THEREOF BETWEEN THE FIXED MATRIX MEMBER AND THE JAWS.
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| 123 | Plate with integral rivet and method and apparatus for making same | US54490766 | 1966-04-25 | US3410127A | 1968-11-12 | BURNS WILLIAM J |
| 124 | Cold forming die construction | US50581365 | 1965-11-01 | US3381515A | 1968-05-07 | ORLOFF JOHN F |
| 125 | Method of producing cup-shaped conductive semi-conductor housing | US24649662 | 1962-12-21 | US3197857A | 1965-08-03 | NIPPERT PAUL W |
| 126 | Method of making a push rod | US11438961 | 1961-06-02 | US3191290A | 1965-06-29 | KNOX DAVID R |
| 127 | Method of producing commutators | US8060761 | 1961-01-04 | US3177562A | 1965-04-13 | ANTON WORNER; HEINZ GERLACH |
| 128 | Pressing device for cold forming or hot forming workpieces | US12804961 | 1961-07-31 | US3120769A | 1964-02-11 | BERNHARD HATEBUR FRITZ |
| 129 | Valve tappet and method of making | US56711856 | 1956-02-23 | US2983991A | 1961-05-16 | ERNEST CARLSON |
| 130 | Main spring for motor vehicles | US51998955 | 1955-07-05 | US2849226A | 1958-08-26 | MARUHN HERBERT F W |
| 131 | Fabrication of forged brake band and the like | US26906052 | 1952-01-30 | US2754576A | 1956-07-17 | CLIFFORD FOSTER CHARLES |
| 132 | Forging apparatus for making pipe plugs | US21232651 | 1951-02-23 | US2689359A | 1954-09-21 | FRIEDMAN JOHN H |
| 133 | Method of making tie rod socket assemblies | US58857645 | 1945-04-16 | US2443712A | 1948-06-22 | HOMER ALLDREDGE MARSHALL |
| 134 | Tie rod | US29310728 | 1928-07-16 | US1829306A | 1931-10-27 | JOHN SNEED |
| 135 | Process for forging | US10190826 | 1926-04-14 | US1683011A | 1928-09-04 | TORVALD ANDREN BIRGER |
| 136 | Method of making valve lifters | US54395222 | 1922-03-15 | US1663191A | 1928-03-20 | CARLSON HJALMAR G |
| 137 | Apparatus for and method of making rod packing | US69815024 | 1924-03-10 | US1634520A | 1927-07-05 | SNYDER HERBERT C |
| 138 | Method | US1632090D | US1632090A | 1927-06-14 | ||
| 139 | Method of manufacturing drag link sockets | US62765523 | 1923-03-26 | US1596029A | 1926-08-17 | SPIRE WILLIAM H |
| 140 | RACK SHAFT AND METHOD FOR PRODUCING SAME | EP16841713 | 2016-08-26 | EP3315225A4 | 2018-07-11 | MIZUTANI HIROTO |
| After rack teeth (10a) are formed by a forging process, and heat treatment such as quenching treatment and tempering treatment is performed on the rack teeth (10a), a finishing processing is performed only on a center side non-variable gear portion (17) provided on an axial center portion in which a specific stroke is constant to provide a finishing processed portion which is shown with an oblique lattice pattern portion. Accordingly, a manufacturing method of a rack shaft is realized which can ensure necessary and sufficient precision of rack teeth at low cost. | ||||||
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