发明授权
- 专利标题: Poppet valve with force feedback control
- 专利标题(中): 提升阀带力反馈控制
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申请号: US115620申请日: 1993-09-03
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公开(公告)号: US5421545A公开(公告)日: 1995-06-06
- 发明人: Lawrence F. Schexnayder
- 申请人: Lawrence F. Schexnayder
- 申请人地址: IL Peoria
- 专利权人: Caterpillar Inc.
- 当前专利权人: Caterpillar Inc.
- 当前专利权人地址: IL Peoria
- 主分类号: F15B13/043
- IPC分类号: F15B13/043 ; F16K31/06 ; G05D7/00 ; F16K31/12
摘要:
A force feedback popper valve has a valve element for controlling fluid flow from an inlet port to an outlet port. A meter-in orifice communicates pressurized fluid from the inlet port to a control chamber above the valve element. A pilot valve provides a meter-out orifice between the control chamber and the outlet port to selectively reduce the pressure level in the control chamber in response to a control force applied to the pilot valve. A feedback spring is disposed in the control chamber between the valve element and the pilot valve so that displacement of the valve element is proportional to the control force exerted against the pilot valve.
公开/授权文献
- USD429173S Button controls for a portable hand-held navigational device 公开/授权日:2000-08-08
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