Description
Class B21F : WORKING OR PROCESSING OF WIRE
Subclass 3/10: Coiling wire into particular forms to spirals other than flat, e.g. conical
B21F 3/10
Sub-Class
Stats
- 16 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 11 Total Patent Owners
- 77 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10828690 | Device and method for forming end of coiled spring | Dec 16, 14 | Nov 10, 20 | Mitsubishi Steel Mfg. Co., Ltd. |
| 10589332 | Soil auger and method of manufacture | Apr 10, 15 | Mar 17, 20 | SENTEK PTY LTD |
| 10418173 | Coil winding method and winding apparatus | Sep 16, 16 | Sep 17, 19 | SHT Corporation Limited |
| 8978434 | Method and equipment for making a spring | Oct 26, 09 | Mar 17, 15 | Ressorts Huon Dubois |
| 8915112 | Device and method for forming end of coiled spring | May 24, 07 | Dec 23, 14 | MITSUBISHI STEEL MFG. CO., LTD. |
| 8621905 | Apparatus for producing inserts for steam generator tubes | May 09, 11 | Jan 07, 14 | SIEMENS AKTIENGESELLSCHAFT |
| 7676297 | Spring-forming control system and its control method for a spring forming machine | Sep 07, 07 | Mar 09, 10 | Tzyh Ru Shyng Automation Co., Ltd. |
| 7107806 | Spring manufacturing machine | Jan 14, 04 | Sep 19, 06 | Shinko Machinery Co., Ltd. |
| 7024901 | Wire spring forming apparatus | Oct 07, 03 | Apr 11, 06 | ORII & MEC CORPORATION |
| 6836964 | Method and apparatus for producing a helical spring | Feb 20, 03 | Jan 04, 05 | CHUO HATSUJO KABUSHIKI KAISHA |
| 6640836 | Coil and coil head formation dies for coils with non-conventional terminal convolutions | Nov 28, 00 | Nov 04, 03 | SEALY TECHNOLOGY, LLC |
| 6550301 | Method for producing an inclined helical spring | Jul 27, 01 | Apr 22, 03 | CHUO HATSUJO KABUSHIKI KAISHA |
| 6371404 | Interlocking bobbin halves | Aug 22, 00 | Apr 16, 02 | SQUARE D COMPANY |
| 5875666 | Spring manufacturing apparatus and position adjustment apparatus for tools | Aug 06, 97 | Mar 02, 99 | KABUSHIKI KAISHA ITAYA SEISAKU SHO |
| 5732583 | Wire forming apparatus | Nov 29, 95 | Mar 31, 98 | KABUSHIKI KAISHA ITAYA SEISAKU SHO |
| 5442945 | Method of and device for manufacturing curved helical springs | Jul 28, 93 | Aug 22, 95 | FRIED. KRUPP AG HOESCH-KRUPP |
Recent Publications
Not Available
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 33 Months (last 2 years Issuances)
- 33 Months (last 5 years Issuances)