Document Type and Number:
Japanese Patent JPS55121791
Kind Code:
U
Abstract:
Frame for high performance light weight bicycle having round top and bottom tubes secured at forward ends to head tube, with forward ends of top and bottom tubes being oval with a lateral width the same as diameter of round portions as a minor axis, tapering rearwardly from a forward maximum major axis, and a section modulus gradually increasing from that of round portions toward the forward ends.
Application Number:
JP7235479U
Publication Date:
August 29, 1980
Filing Date:
May 29, 1979
Export Citation:
International Classes:
B62K3/04; B62K19/06; (IPC1-7): B62K19/06
Domestic Patent References:
| JPS3533213Y1 | ||||
| JPS5154369U | 1976-04-26 |