| 摘要 |
<P>PROBLEM TO BE SOLVED: To apply a thrust force (torque) to a grounded driven roller only by a drive roller to improve the efficiency in drive of the main wheel. <P>SOLUTION: Right and left drive discs 48L, 48R are respectively coaxial with the center axes A<SB>L</SB>, A<SB>R</SB>and are symmetrically inclined at inclination angles θL, θR with respect to a horizontal axis A. Only the drive rollers 56L, 56R positioned at a lower side where the drive discs 48L, 48R get closer to the main wheel 84 are brought into contact with the driven roller 92. <P>COPYRIGHT: (C)2011,JPO&INPIT |
