United States Patent
美國專利 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
采取剝離式開啟動作的流體反應出口控制閥
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.
本發(fā)明包括一個安裝在汽車燃料箱上的搖晃止回閥，以便有選擇性的從燃料箱中排放汽油蒸汽到除水閥內(nèi)，就如同碳罐的功能一樣。搖晃止回閥包括一個液體燃料反應控制元件，通過杠桿臂結(jié)構(gòu)與閥芯連接，以便移動位于閥座上的開，關排氣位置之間的閥芯。利用杠桿臂結(jié)構(gòu)獲得的機械開啟優(yōu)勢是以強有力的剝離動作了確保無論箱/罐的不同壓力作用力以維持閥心在關閉的位置上，同樣都可開啟閥。一體化表現(xiàn)為杠桿臂結(jié)構(gòu)包括一個小羊角錘機械裝置，通過使用杠桿臂的最大潛能提供啟動的樞軸開啟力，從而得到一個直線開啟力。

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Inventors:
發(fā)明者：  Bergsma; Rudolph (Ann Arbor, MI), Waldorf; Lindsey E. (Whitmore Lake, MI)
Assignee:
專利權(quán)人： G. T. Products, Inc. (Ann Arbor, MI)
G.T.產(chǎn)品有限公司（位于密西根州的市中心安阿伯爾）
Appl. No.:
使用編號：  07/974,655
Filed:
歸檔時間： November 12, 1992
1992年12月
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Current U.S. Class:
美國專利分類號： 137/43 ; 137/202
國際專利分類號：  F16K 17/36 (20060101); B60K 15/03 (20060101); B60K 15/035 (20060101)
Field of Search:
研究領域 137/39,43,202,587
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References Cited [Referenced By]
參考舉例 （由*引用）
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U.S. Patent Documents
美國專利文件
     
 Primary Examiner: Nilson; Robert G.
初試考官：尼爾森；羅伯特G
Attorney, Agent or Firm: Krass & Young
律師，代理人或公司：Krass & Young
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Claims
聲明
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We claim:
我們聲明：
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. 安裝在燃料箱上的液體和重力反應搖晃止回閥是為了有選擇性的從燃料箱中排放出汽油蒸汽到除水閥中，就如同碳罐一樣，本閥包括：
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;
空心閥體具備汽油蒸汽入口并與燃料箱內(nèi)部連接，和一個汽油蒸汽出氣口與除水閥連接；
valve means associated with the vent outlet, the valve means movable between an open venting position and a closed non-venting position;
閥裝置與出氣口相連接，該閥裝置可在開口的排氣位置和關閉的非排氣位置之間移動；
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,
空心閥體中的燃料水平反應控制裝置與閥裝置連接以通過開，關閥裝置對出燃料箱中流體燃料的水平位置做出反映；其中，

2014.10.24