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Safety shut-off fuel system

  • US 3,955,641 A
  • Filed: 06/06/1975
  • Issued: 05/11/1976
  • Est. Priority Date: 06/06/1975
  • Status: Expired due to Term
First Claim
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1. In a regulated liquid reservoir, the combination of a float regulated liquid inlet and safety shut off valve means, comprising housing means defining chamber means, passage means carried by said housing means and effective for conveying said liquid from a remotely situated source of said liquid to said chamber means, float means pivotally retained within said chamber means, said float means being positioned as to be acted upon by the attendant buoyant force of said liquid within said chamber means, valving means situated in cooperative relationship to said passage means and effective to regulate the rate of flow of said liquid from said passage means into said chamber means, said valving means being operatively connected to said float means as to thereby be openable and closeable in accordance with associated movement of said float means, and resilient means operatively connected to said float means, said resilient means exhibiting a preload force of a magnitude sufficient to cause and maintain closure of said valving whenever said liquid reservoir and said source are positioned in an attitude considered abnormal to the accepted mode of operation of said reservoir, said preload force being of a magnitude at least equal to a counter-force developed against said valving means by the pressure head of said liquid within said source during the said abnormal attitude thereof.

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