Fluid flow control apparatus and a gasoline dispensing and vapor recovery system utilizing said apparatus
AssigneeWeil-McLain Co., Inc.
InventorElmer M. Deters
Life of this patent
Estimating the term…
Abstract
A fluid flow control apparatus in which a plurality of passages are formed through a housing connected in the conduit through which the fluid flows. A control member is located in the housing and moves relative thereto in response to variations in the flow rate of the fluid through the passages. A valve member is provided in the housing in an operative relationship with the control member for preventing the flow of fluid through the passage means in response to the control member attaining a predetermined position in the housing as a result of a reduction in the fluid flow rate below a predetermined value. A gasoline dispensing and vapor recovery system utilizing the above flow control apparatus.
Claims8
A control apparatus for controlling the flow of fluid comprising a housing adapted to receive fluid, passage means in said housing for permitting the flow of fluid through said housing, a control member disposed in said housing and movable relative to said housing in response to variations in the flow rate of said fluid through said passage means, means for defining a chamber in said housing, a valve member movable in said chamber between a position in which it prevents fluid flow through said passage means and a position in which it permits fluid flow through said passage means, means urging said valve member to its fluid flow permitting position, and means cooperating with said control member for selectively permitting a portion of said fluid to flow into said chamber in response to said control member attaining a predetermined position in said housing thus forcing said valve member to its fluid flow preventing position.
A gasoline dispensing and vapor recovery system including a dispensing unit adapted to dispense gasoline to a vehicle tank and recover vapors from said tank and conduit system adapted to supply gasoline to said dispensing unit and receive vapors from said dispensing unit, wherein the improvement comprises a control apparatus for controlling the flow of said gasoline through said system said apparatus comprising a housing connected in said conduit system passage means in said housing for permitting the flow of gasoline through said housing, a control member disposed in said housing and movable relative to said housing in response to variations in the flow rate of said gasoline through said passage means, means for defining a chamber in said housing, a valve member movable in said chamber between a position in which it prevents gasoline flow through said passage means and a position in which it permits fluid flow through said passage means, means urging said valve member to its fluid flow permitting position, and means cooperating with said control member for selectively permitting a portion of said gasoline to flow into said chamber in response to said control member attaining a predetermined position in said housing thus forcing said valve member to its gasoline flow preventing position.
Dependencies are inferred from the claim text.