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Fluid valve with float actuator

  • US 3,982,557 A
  • Filed: 04/16/1975
  • Issued: 09/28/1976
  • Est. Priority Date: 05/20/1974
  • Status: Expired due to Term
First Claim
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1. A fluid control valve for maintaining a predetermined fluid level in a reservoir comprising,a valve body having a valve chamber with a fluid inlet and an upwardly opening fluid outlet, a valve sealing device disposed in circumscribing relationship to said outlet,a valve closure element positioned in said valve chamber and normally held in closed relationship to said sealing device solely by fluid pressure in said valve chamber, said element movable into and out of fluid sealing engagement with said valve sealing device and having an elongated actuating stem rigidly secured thereto, said stem extending vertically upward through the outlet and projecting a distance outwardly from said valve body with the outer end portion convergently tapered, andfloat actuating means including a lever arm pivotably mounted on said valve body for swinging movement relative thereto in a plane parallel to the longitudinal axis of said valve element, said lever arm having a cam follower contactingly engageable with said actuating stem in opening said valve and mounted to move onto the tapered end portion of said stem for increasing rate of movement in closing of said valve element, and a float attached thereto in spaced relationship to said cam follower and positionable within the fluid reservoir to respond to the fluid level therein for actuation of said valve closure element.

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