United States Patent
美国专利 5,313,977
Bergsma , et al. May 24, 1994
1994年5月24日
Fluid-responsive vent control valve with peel-away opening action
采取剥离式开启动作的流体反应出口控制阀
Abstract
摘要
The present invention comprises a rollover vent valve for mounting on a vehicle fuel tank to selectively vent fuel vapor from the fuel tank to a vapor trap such as a carbon canister. The valve includes a liquid fuel responsive control element connected to a valve element via lever arm structure to move the valve element between open and closed venting positions on a valve seat. The mechanical opening advantage obtained with the lever arm structure provides for a powerful peel-away action to ensure opening of the valve despite a tank/canister pressure differential acting to maintain the valve element in the closed position. In one embodiment the lever arm structure includes a hammer-claw mechanism to provide an initial pivotal opening force using the maximum potential of the lever arm, and a subsequent rectilinear opening force.
本发明包括一个安装在汽车燃料箱上的摇晃止回阀，以便有选择性的从燃料箱中排放汽油蒸汽到除水阀内，就如同碳罐的功能一样。摇晃止回阀包括一个液体燃料反应控制元件，通过杠杆臂结构与阀芯连接，以便移动位于阀座上的开，关排气位置之间的阀芯。利用杠杆臂结构获得的机械开启优势是以强有力的剥离动作了确保无论箱/罐的不同压力作用力以维持阀心在关闭的位置上，同样都可开启阀。一体化表现为杠杆臂结构包括一个小羊角锤机械装置，通过使用杠杆臂的最大潜能提供启动的枢轴开启力，从而得到一个直线开启力。
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Inventors:
发明者： Bergsma; Rudolph (Ann Arbor, MI), Waldorf; Lindsey E. (Whitmore Lake, MI)
Assignee:
专利权人： G. T. Products, Inc. (Ann Arbor, MI)
G.T.产品有限公司（位于密西根州的市中心安阿伯尔）
Appl. No.:
使用编号： 07/974,655
Filed:
归档时间： November 12, 1992
1992年12月
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Current U.S. Class:
美国专利分类号： 137/43 ; 137/202
国际专利分类号： F16K 17/36 (20060101); B60K 15/03 (20060101); B60K 15/035 (20060101)
Field of Search:
研究领域 137/39,43,202,587
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References Cited [Referenced By]
参考举例 （由*引用）
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U.S. Patent Documents
美国专利文件
Primary Examiner: Nilson; Robert G.
初试考官：尼尔森；罗伯特G
Attorney, Agent or Firm: Krass & Young
律师，代理人或公司：Krass & Young
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Claims
声明
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We claim:
我们声明：
1. A liquid- and gravity-responsive rollover vent control valve for mounting on a fuel tank to selectively vent fuel vapor from the tank to a vapor trap such as a carbon canister, the valve comprising:
1. 安装在燃料箱上的液体和重力反应摇晃止回阀是为了有选择性的从燃料箱中排放出汽油蒸汽到除水阀中，就如同碳罐一样，本阀包括：
a hollow valve body having a fuel vapor inlet communicating with the tank interior and a fuel vapor vent outlet communicating with the vapor trap;
空心阀体具备汽油蒸汽入口并与燃料箱内部连接，和一个汽油蒸汽出气口与除水阀连接；
valve means associated with the vent outlet, the valve means movable between an open venting position and a closed non-venting position;
阀装置与出气口相连接，该阀装置可在开口的排气位置和关闭的非排气位置之间移动；
fuel level responsive control means in the hollow valve body connected to the valve means to open and close the valve means in response to the level of liquid fuel in the tank; wherein,
空心阀体中的燃料水平反应控制装置与阀装置连接以通过开，关阀装置对出燃料箱中流体燃料的水平位置做出反映；其中，
2014.10.24