Tag Archives: compasses

Arm-telescopic radius compasses

Application Number: 00111349Application Date: 2000.09.02Publication Number: 1282673Publication Date: 2001.02.07Priority Information: International: B43L9/02Applicant(s) Name: Li GuangqianAddress: Inventor(s) Name: Li GuangqianPatent Agency Code: 00000Patent Agent: Abstract The arm-telescopic radius compases with disk leg contact tooth instead of metallic needle is disclosed. A circle center indicating needle is in the center of the bottom disk of contact tooth.… Read More »

Diameter compasses

Application Number: 00111351Application Date: 2000.09.02Publication Number: 1282674Publication Date: 2001.02.07Priority Information: International: B43L9/02Applicant(s) Name: Li GuangqianAddress: Inventor(s) Name: Li GuangqianPatent Agency Code: 00000Patent Agent: Abstract The diameter compasses features that when a circle is drawn, the turning handle and core lead are vertically pressed. The end of diameter plate moves along the circumference trace and its… Read More »

Elliptic compasses

Application Number: 00114593Application Date: 2000.05.23Publication Number: 1273914Publication Date: 2000.11.22Priority Information: International: B43L11/04Applicant(s) Name: Feng SunzhongAddress: Inventor(s) Name: Feng SunzhongPatent Agency Code: 45106Patent Agent: li mengtianAbstract An elliptic compasses set for drawing featurs that a bearing is respectively installed to the top and bottom of triangular or semi-circular compasses skeleton, the right-angle crankshaft, to whose bottom… Read More »