Filler device for a fluid tank

Patent metadata

Field	Value
Publication number	US-9561949-B2
Application number	US-201314413803-A
Country	US
Kind code	B2
Filing date	Jul 5, 2013
Priority date	Jul 10, 2012
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A filler device for a fluid tank, including: a filler duct; a first stopper, for preventing overfilling of the tank, and a second stopper for preventing fluid from leaving the tank in unwanted manner; a first float mechanically connected to the first stopper such that, on being placed in a predetermined position, the first float closes the first stopper; and a holder system for holding the second stopper, which system, when fluid leaves the tank, closes the second stopper, and when fluid enters into the tank, opens the second stopper. In an operating position of the device, and under effect of a heavy element, the holder system acts continuously on the second stopper, tending to maintain the second stopper permanently in its closed position.

First claim

The invention claimed is:

1. A filler device for a fluid tank, the filler device comprising:
a filler duct;
a first stopper, for preventing overfilling of the tank, and a second stopper for preventing fluid from leaving the tank in unwanted manner;
a first float mechanically connected to the first stopper such that placing the first float in a predetermined position places the first stopper in a substantially closed position; and
a holder system for holding the second stopper, which system acts to place the second stopper in the closed position, and when a fluid passes along the duct in the filling direction, to place the second stopper in the open position; and
wherein each of the stoppers is configured to be placed in an open position to allow fluid to pass along the duct, or in a closed position to plug the duct;
wherein the holder system is arranged such that in an operating position of the device, under effect of weight of a heavy element, the holder system tends permanently to maintain the second stopper in its closed position;
the heavy element includes a ball or a weight that also constitutes the second stopper;
an internal surface of the duct presents a seat portion;
the duct is arranged such that in the normal position of the device, under effect of gravity, the ball or weight tends to move onto the seat position and thus to plug the duct; and
the seat portion is formed in a filling direction downstream from a bend forming an angle close to 180°.

2. A device according to claim 1 , wherein the first float and the first stopper are the same.

3. A device according to claim 1 , wherein an internal surface of the duct presents a seat portion, and in the closed position, the second stopper plugs the duct at the seat portion.

4. A device according to claim 1 , wherein the duct presents one end connected in a leaktight manner to at least one outlet orifice, and in the closed position, the first stopper plugs the at least one outlet orifice.

5. A device according to claim 1 , further comprising a guide configured to guide the first float to move in translation.

6. A device according to claim 5 , wherein the guide includes a tubular portion of the duct around which the first float is arranged.

7. A device according to claim 6 , wherein the first float is in a form of a sleeve.

8. A device according to claim 1 , wherein the second stopper is arranged such that, if pressure inside the tank is greater than pressure outside the tank, the pressure difference between the tank and outside of the tank holds the second stopper in the closed position.

9. A device according to claim 1 , wherein when the first float is placed in the predetermined position, the first stopper remains in a substantially closed position, with this continuing even when an upstream portion of the duct, situated upstream from the first stopper in the filling direction, is full of fluid.

10. A fluid tank comprising a device according to claim 1 .

Assignees

• Turbomeca

Inventors

• Cazaux Yannick
• Brotier Sebastien
• Bueno Armand
• Renault Lionel

Classifications

• B65D90/26

  Overfill prevention · CPC title

• F16K15/044

  spring-loaded · CPC title

• B64D37/005

  Accessories not provided for in the groups B64D37/02 - B64D37/28 · CPC title

• F16K15/04

  shaped as balls · CPC title

• F16K31/22

  with the float rigidly connected to the valve · CPC title