Assignee
SHANDONG WEIDA MACH CO LTD
CN·16 granted patents·194 citations·filing 2002–2022
Top patents by PatentIndex Score
16 records- 0189US6848691B2Hammerlock chuckSHANDONG WEIDA MACH CO LTD·Filed 2002·Granted Feb 1, 2005·42 cites·21 claims
- 0286US7128324B2Hammerlock chuckSHANDONG WEIDA MACH CO LTD·Filed 2005·Granted Oct 31, 2006·17 cites·20 claims
- 0383US7296803B2ChuckSHANDONG WEIDA MACH CO LTD·Filed 2002·Granted Nov 20, 2007·31 cites·10 claims
- 0481US7125021B2Self-locking drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2003·Granted Oct 24, 2006·28 cites·6 claims
- 0578US7654539B2Locking drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2006·Granted Feb 2, 2010·10 cites·19 claims
- 0675US7946594B2Drill chuck locked through an inclined wedge surfaceSHANDONG WEIDA MACH CO LTD·Filed 2007·Granted May 24, 2011·16 cites·7 claims
- 0772US7972093B2One-way clutch and a clamping structure for a handled tool using the sameSHANDONG WEIDA MACH CO LTD·Filed 2006·Granted Jul 5, 2011·4 cites·36 claims
- 0871US7581907B2Clamping structure for a handled toolSHANDONG WEIDA MACH CO LTD·Filed 2006·Granted Sep 1, 2009·7 cites·34 claims
- 0970US6991238B2Locking drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2004·Granted Jan 31, 2006·15 cites·18 claims
- 1066US7896356B2Drill chuck with two-stage grippingSHANDONG WEIDA MACH CO LTD·Filed 2007·Granted Mar 1, 2011·9 cites·32 claims
- 1166US7249770B2Locking drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2004·Granted Jul 31, 2007·15 cites·4 claims
- 1256US12515260B2Clamping mechanism and electric toolSHANDONG WEIDA MACH CO LTD·Filed 2022·Granted Jan 6, 2026·0 cites·20 claims
- 1350US11400526B2Clamping jaw assembly and drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2019·Granted Aug 2, 2022·0 cites·5 claims
- 1444US11198184B2Drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2018·Granted Dec 14, 2021·0 cites·11 claims
- 1542US11117198B2Cooling chuckSHANDONG WEIDA MACH CO LTD·Filed 2018·Granted Sep 14, 2021·0 cites·9 claims
- 1632US9744601B2Drill chuckSHANDONG WEIDA MACH CO LTD·Filed 2013·Granted Aug 29, 2017·0 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →