| 发明名称 | Meterless hydraulic system having flow sharing and combining functionality | ||
| 摘要 | A hydraulic system includes a variable-displacement first pump and a variable-displacement second pump. The hydraulic system also includes a first actuator selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner. The hydraulic system further includes a second actuator and a variable-displacement rotary actuator that are each selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner. | ||
| 申请公布号 | US8978374(B2) | 申请公布日期 | 2015.03.17 |
| 申请号 | US201113279064 | 申请日期 | 2011.10.21 |
| 申请人 | Caterpillar Inc. | 发明人 | Opdenbosch Patrick;Tognetti Lawrence J.;Hillman Bryan J. |
| 分类号 | F15B11/17;F15B7/00;E02F9/22 | 主分类号 | F15B11/17 |
| 代理机构 | Finnegan, Henderson, Farabow, Garrett & Dunner, LLP | 代理人 | Finnegan, Henderson, Farabow, Garrett & Dunner, LLP |
| 主权项 | 1. A hydraulic system comprising: a variable-displacement first pump; a variable-displacement second pump; a first actuator selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner; a second actuator selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner; and a variable-displacement rotary actuator selectively connected either to the first pump in a closed loop manner and not the second pump, to the second pump in a closed loop manner and not the first pump, or to the first and second pumps in a closed loop manner. | ||
| 地址 | Peoria IL US | ||