Li Guijie

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Weihai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Force increasing self-locking drill chuck and self-locking mechanis...
- Patent number 8,740,227
- Issue date Jun 3, 2014
- Shandong Weida Machinery Co., Ltd.
- Zexin Zhou
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
One-way clutch and a clamping structure for a handled tool using th...
- Patent number 7,972,093
- Issue date Jul 5, 2011
- Shandong Weida Machinery Co., Ltd.
- Guijie Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Drill chuck with two-stage gripping
- Patent number 7,896,356
- Issue date Mar 1, 2011
- Shandong Weida Machinery Co., Ltd.
- Zexin Zhou
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Clamping structure for a handled tool
- Patent number 7,581,907
- Issue date Sep 1, 2009
- Shandong Weida Machinery Co., Ltd.
- Zexin Zhou
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
FORCE INCREASING SELF-LOCKING DRILL CHUCK AND SELF-LOCKING MECHANIS...
- Publication number 20100181735
- Publication date Jul 22, 2010
- Zexin Zhou
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Drill chuck with two-stage gripping
- Publication number 20070241519
- Publication date Oct 18, 2007
- SHANDONG WEIDA MACHINERY CO., LTD.
- Zexin Zhou
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
One-way clutch and a clamping structure for a handled tool using th...
- Publication number 20070074948
- Publication date Apr 5, 2007
- SHANDONG WEIDA MACHINERY CO., LTD.
- Guijie Li
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Clamping structure for a handled tool
- Publication number 20060273529
- Publication date Dec 7, 2006
- SHANDONG WEIDA MACHINERY CO., LTD.
- Zexin Zhou
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR