发明名称 |
Agricultural tractor with draft load sensing springs for power lift control |
摘要 |
A tractor has a power lift mechanism controllable automatically in known manner by implement draft load sensing apparatus. This apparatus comprises two leaf springs which are spaced apart in a lateral direction relative to the tractor, the springs being connected at their front ends to the tractor and being adapted to flex in the lateral direction but being stiff longitudinally of the tractor and vertically; two hitch links each connected to the rear end of one of the springs; and equipment for transmitting to the power lift mechanism a control signal derived from any variation in the distance between the flexible portions of the springs.
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申请公布号 |
US4059159(A) |
申请公布日期 |
1977.11.22 |
申请号 |
US19750615298 |
申请日期 |
1975.09.22 |
申请人 |
DAVID BROWN TRACTORS LIMITED |
发明人 |
MOORHOUSE, STEPHEN;HORSFALL, HARRY;DEAN, ALAN RANGELEY |
分类号 |
A01B63/112;B60D1/50;B62D49/02;(IPC1-7):A01B63/11 |
主分类号 |
A01B63/112 |
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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