Manually fastened drill chuck

Application Number  00129426 Application Date  2000.12.19
Publication Number  1359776 Publication Date  2002.07.24
Priority Information    
Applicant(s) Name  Weida Machine-Tool Group Co., Shandong  
Inventor(s) Name  Yang Guimo;Tan Xingda  
Patent Agency Code  37202 Patent Agent  yu zhenqiang
AbstractA manually fastened drill chuck is composed of drill body with three oblique holes and central hole, three clamping jaws mounted in said oblique holes, back cover and drive shaft mounted in said central hole. The external screw on lower end of drive shaft is engaged with the internal screws of clamping jaws to form screw drive. Its advantages are no influence of vibration and impact on fastening of drill, and high safety.