Tag Archives: helical

Non-gap piston ring of helical spring

Application Number  00129140 Application Date  2000.09.30 Publication Number  1286351 Publication Date  2001.03.07 Priority Information     International Classification  F02F5/00;F16J9/04   Applicant(s) Name  Yu Yeli   Address     Inventor(s) Name  Yu Yeli   Patent Agency Code  23109 Patent Agent  yue quanqing AbstractA non-gap helical piston ring has at least 4 turns and its both ends… Read More »

Energy-saving double helical lamp tube clamping technique

Application Number: 00112439Application Date: 2000.07.28Publication Number: 1336678Publication Date: 2002.02.20Priority Information: International: H01J9/40Applicant(s) Name: Huang DesenAddress: Inventor(s) Name: Huang DesenPatent Agency Code: 35201Patent Agent: lin jinAbstract The invention relates to the manufacture of lamp, particularly the clamping and sealing technology, for double helical energy-saving fluorescent tube. The mfg. process for said lamp without angle is to… Read More »