发明名称 |
Material handling vehicle having improved deadman control |
摘要 |
A material handling vehicle is disclosed which is in the form of a battery-operated lift truck having a drive unit including an electric motor and a brake and having a hydraulically operated power steering system controlled from a steering wheel on a vertically movable platform. A pump of the power steering system is operated by an electric motor which is energized through a deadman switch on the operator's platform. The brake of the drive unit is spring-biased toward an engaged condition and is released by a hydraulic cylinder supplied with fluid from the power steering pump, the brake being released by the hydraulic back pressure of the power steering system.
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申请公布号 |
US4336860(A) |
申请公布日期 |
1982.06.29 |
申请号 |
US19800115055 |
申请日期 |
1980.01.24 |
申请人 |
THE PRIME-MOVER CO. |
发明人 |
NOLLER, FRED W.;KRAMER, JAMES C. |
分类号 |
B60K1/00;B60K28/04;B60T7/14;B60T13/22;B62D5/06;B66F9/20;(IPC1-7):B60K1/00 |
主分类号 |
B60K1/00 |
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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