发明名称 |
Vehicle convertible from a tricycle two wheel drive to a four wheel four wheel drive |
摘要 |
A tricycle type vehicle with two forwardly disposed spaced apart drive wheels and a rear centrally disposed caster wheel. Spaced apart auxiliary drive wheels flank both sides of the rear caster wheel and are arranged for vertical movement on the vehicle. The auxiliary drive wheels may be in an up inoperative position to permit the vehicle to act solely as a tricycle with two driving wheels, or down in ground engaging operative position causing the caster wheel to be raised off the ground and thus converting the vehicle to a four wheel drive vehicle.
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申请公布号 |
US4392541(A) |
申请公布日期 |
1983.07.12 |
申请号 |
US19810259513 |
申请日期 |
1981.05.01 |
申请人 |
SPYDER SALES & SERVICE, INC. |
发明人 |
BARCHARD, JOHN |
分类号 |
B62D61/12;B66F9/06 |
主分类号 |
B62D61/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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