发明名称 |
HYDRAULIC SUSPENSION HITCH SYSTEM |
摘要 |
The present disclosure provides a hitch suspension system that reduces a transfer of energy (e.g., provides a smoother ride) between two bodies hitched together, such as between a towing vehicle and a towed vehicle/trailer. In an embodiment, the suspension system includes a hydraulic cylinder with an extendable rod in fluid communication with a fluid pump. A control valve is fluidly coupled between the hydraulic cylinder and the fluid pump and is configured to adjust an extension length of the rod. Additionally, a variable orifice that adjusts resistance to extension and retraction of the rod is fluidly coupled between the hydraulic cylinder and the control valve. A first fixed restrictive element is fluidly coupled in series with the variable orifice to dissipate energy ad the rod extends and a second fixed restrictive element is fluidly coupled in series with the variable orifice to dissipate energy as the rod retracts.
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申请公布号 |
US2012324767(A1) |
申请公布日期 |
2012.12.27 |
申请号 |
US201113169369 |
申请日期 |
2011.06.27 |
申请人 |
AULT DAVID E.;KUEHN JEFFREY L.;CATERPILLAR INC. |
发明人 |
AULT DAVID E.;KUEHN JEFFREY L. |
分类号 |
E02F3/08;B60D1/32;B60G17/0165 |
主分类号 |
E02F3/08 |
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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