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US 5,289,842 AGranted
Vibration-resistant impact valve for vapor recovery line
OwnerSergio M. Bravoinventor
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OwnerSergio M. Bravoinventor
Estimating the term…
An impact valve with an easily replaceable, breakable valve assembly includes a valve body with a valve opening for connecting to a vapor recovery pipeline connected between a vapor inlet and a vapor recovery tank, or connected between a gasoline product pipeline and a gasoline pump dispenser or self-contained system (i.e., a nonpressurized system), a housing threaded to the valve body, a valve plug located in the housing, a spring for biasing the valve member toward the valve opening in order to close the opening, and a plunger for holding the valve plug against the bias of the spring to keep the valve open, the valve plug having an extension with an end portion that securely mates with an end portion of the plunger to avoid necessary actuation, and the valve body having a weakened circumferential area around the plunger so that the valve body will readily break in response to impact and readily displace the plunger to release the valve plug.
In an apparatus for recovering flammable vapors, the apparatus including a conduit having a vapor inlet and means for sucking the vapor through the conduit, the improvement comprising a valve disposed along the conduit, the valve comprising a valve body, a valve housing threaded to the valve body, a valve plug disposed in the housing, means for biasing the valve plug towards a first position for closing the valve to vapors, and plunger means disposed in the valve body for normally holding the valve plug in a second position in which the valve in open to vapors, the valve body having means for defining a weakened portion for breaking in response to stress more readily than the valve housing and other portions of the valve body, wherein the plunger means and valve plug have mating surfaces which comprise means for securely seating the plunger in the valve plug so that the plunger will only be dislodged from the valve plug in response to breakage of the valve body, wherein the plunger means is formed unitarily with the valve body.
A valve for a flammable fluid vapor recovery apparatus, the valve comprising a valve body, a valve housing threaded to the valve body, a valve plug disposed in the housing, means for biasing the valve plug towards the first position for closings the valve to vapors, and plunger means disposed in the valve body for normally holding the valve plug in a second position in which the valve is open to vapors, the valve body having means for defining a weakened portion for breaking in response to stress more readily than the valve housing and other portions of the valve body, wherein the plunger means and valve plug have mating surfaces which comprise means for securely seating the plunger in the valve plug so that the plunger will only be dislodged form the valve plug in response to breakage of the valve body, wherein the plunger is unitarily formed with the valve body.
Dependencies are inferred from the claim text.