发明授权
US5447257A Valve trumpet spring and seal 失效
阀门喇叭弹簧和密封

Valve trumpet spring and seal
摘要:
A compression spring is formed of elastic material in a shape resembling a trumpet horn. Novel valve structures incorporate the trumpet horn spring as a component, the latter of which serves therein to make the valve self restoring and also to provide a fluid seal. One valve is principally applied to dispense pressurized fluid and the other is a simple gravity fed beverage tap.
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