Invention Application
- Patent Title: ELECTRO-HYDRAULIC SYSTEM WITH FLOAT FUNCTION
- Patent Title (中): 具有浮动功能的电液系统
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Application No.: PCT/US2013/020513Application Date: 2013-01-07
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Publication No.: WO2013103954A2Publication Date: 2013-07-11
- Inventor: FRANZONI, Germano , HARSIA, Jarmo , LOWMAN, Roger
- Applicant: PARKER-HANNIFIN CORPORATION
- Applicant Address: 6035 Parkland Boulevard Cleveland, Ohio 44124-4141 US
- Assignee: PARKER-HANNIFIN CORPORATION
- Current Assignee: PARKER-HANNIFIN CORPORATION
- Current Assignee Address: 6035 Parkland Boulevard Cleveland, Ohio 44124-4141 US
- Agency: BULSON, Don W.
- Priority: US61/583,356 20120105
- Main IPC: F04B7/04
- IPC: F04B7/04
Abstract:
A method of controlling a float function of a cylinder having a first side and a second side includes connecting the second side of the cylinder to a reservoir; connecting the first side of the cylinder to an output of a pump and to the reservoir; and supplying an amount of flow from a pump less than an amount supplied by the pump under loaded conditions. A three-position directional control valve having a pump port, a reservoir port, a first cylinder port, and a second cylinder port may be provided to effectuate aspects of this method.
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