초록 ▼

A compact, lightweight, inexpensive surge restrictor for use in the fuel tank vent line of a marine craft includes a housing which defines a chamber having an inlet and an outlet, a baffle member disposed within a flow path through the chamber so that liquid passing therethrough impinges upon and is

A compact, lightweight, inexpensive surge restrictor for use in the fuel tank vent line of a marine craft includes a housing which defines a chamber having an inlet and an outlet, a baffle member disposed within a flow path through the chamber so that liquid passing therethrough impinges upon and is redirected to dissipate liquid momentum, and a movable closure member, which in response to a surge of liquid into the inlet, abates liquid flow through the surge restrictor. More specifically, the movable closure member is movable between a normal rest position wherein vapor and air can easily flow through the surge restrictor to allow venting and atmospheric pressure equalization within a fuel tank, and a liquid fuel surge arresting position wherein the closure member blocks a passageway in the flow path between the inlet and outlet of the surge restrictor to abate fluid flow therethrough. Preferably, small openings allow continuous air/fuel vapor flow even when the movable closure is in its fuel arresting position. On form of the device also provides a combined surge restrictor and water ingestion restrictor. The surge restrictor of the invention provides a simple device for effectively preventing discharge of liquid fuel into the environment on account of fuel surges which can, for example, be caused by overfilling of the fuel tank or by rocking of the marine craft due to wave action.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A surge restrictor for preventing liquid fuel from discharging from a fuel vent line of a motorized vehicle, comprising:a housing defining an interior chamber;a tubular inlet to sa

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A surge restrictor for preventing liquid fuel from discharging from a fuel vent line of a motorized vehicle, comprising:a housing defining an interior chamber;a tubular inlet to said interior chamber which is adapted to be connected with conduit in fluid communication with a headspace of a fuel tank;a tubular outlet from said interior chamber which is adapted to be connected with a conduit in fluid communication with an ambient atmosphere;a baffle member including a liquid flow diverting surface disposed within said chamber which causes liquid flowing from said inlet to said outlet to change direction, whereby momentum of the liquid is dissipated, said baffle member including a lower annular shaped baffle plate having a central opening through which fluid flows, and an upper generally circular shaped baffle plate, said baffle plates being integral portions of said baffle member and being maintained in spaced relationship by a slotted cylindrical wall; anda movable closure member which in response to a surge of liquid into said inlet restricts the flow of liquid through said surge restrictor said movable closure member being movable between a first position wherein fluid flowing into said inlet of said surge restrictor impinges upon and freely flows past said movable closure member and through a passageway between said inlet and said outlet and a second position wherein said movable closure member blocks said passageway to abate fluid flow through said surge restrictor said passageway including an opening in said baffle member which is blocked by said movable closure member when said movable closure member is in said second position.