| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137150260 | Float valve | 6 |
| 20080236672 | Fuel shut-off valve - A fuel shut-off valve includes a casing, an ascendable and descendible float, and an upper valve element, which is actuated by the float to open and close connector passage that communicates the inside of fuel tank with the outside, and which includes a valve body and a ring-shaped seat member. The ring-shaped seat member makes a connector bore, which communicates with the connector passage, therein, and includes a base, a holding portion, a seating portion, a lip-shaped portion, and a thin-film-shaped portion. The seating portion opens and closes the connector passage, and defines an opening of the connector bore. The lip-shaped portion seats on and separates away from the float, and defines the other opening of the connector bore. The thin-film-shaped portion is disposed between the base and the lip-shaped portion, and is deformable elastically upon being pressed by the float when the float seats on the lip-shaped portion. | 10-02-2008 |
| 20090071543 | Fuel Vent Valve And Improvement Thereof - A fuel valve comprising a primary valve and a pressure responsive auxiliary valve, both being axially accommodated and displaceable within a common housing formed with a fluid inlet and a fluid outlet port, and a partition extending between the primary valve and the auxiliary valve. The partition comprising a flow passage extending between a primary port at a bottom face of the partition and an auxiliary port at a top face of the partition. The primary port is sealable by a sealing member of the primary valve and the auxiliary port sealable by a sealing member of the auxiliary valve. | 03-19-2009 |
| 20100175760 | FLOAT VALVE - A float valve is mounted within the ullage of a liquid storage tank and is fitted to a lower end of a vapour vent line. The float valve includes a generally tubular vent body having an opening arrangement which allows vapour to escape from the tank into the vent line, and a float assembly which undergoes damped upward movement in response to the liquid level within the tank exceeding a threshold level. The float assembly comprises a sleeve and a float arrangement separated from each other by an adjustable distance. In this way, the volume of liquid required in the tank to make the float assembly move upward can be changed. The float valve may include a relief valve or a plug with a bleed orifice to permit vapour flow from the tank to the vapour vent line in the event that the pressure within the tank exceeds a predetermined value. | 07-15-2010 |
| 20140014193 | VALVE ASSEMBLY FOR PRODUCTION TANKS - A float valve assembly is provided which can be remotely retrofit to a pipe end located in a production tank. The valve assembly comprises a guide rod disposed axially in the valve assembly. A floating valve element of the valve assembly is coupled to the guide rod and is moveable with or axially along the guide rod. The valve assembly is remotely mounted on the pipe end by temporarily associating an installation tool with the guide rod to locate a fitting adapter of the valve assembly over the pipe end for sealably fitting the valve assembly to the pipe end. The guide rod can also be manually manipulated for moving the valve element away from the pipe end and locking the valve element in the open position for permitting flow of liquid through the pipe end. A method for manually locking the valve element in the open position is also provided. | 01-16-2014 |
| 20140373934 | ATTACHMENT FOR FLOAT VALVE AND METHOD OF USE - An attachment for a float valve may permit a larger flow of water than conventional float valves. A second outlet of the attachment may be dimensioned such that a greater amount of water is able to exit it than through an outlet of the float valve. This helps replenish the trough at a greater flow rate than what is possible through the use of the float valve alone. | 12-25-2014 |
| 20160024771 | DELAYED SHUTOFF DEVICE - A delayed shutoff device comprises a conduit configured to allow a fluid to flow through, wherein the conduit includes a conduit start and a conduit end. The device further comprises a plug configured to be placed inside the conduit at the conduit start; move inside the conduit from the conduit start toward the conduit end when the fluid flows through the conduit; and reduce the fluid flow upon reaching the conduit end. The device is configured to allow a pass-through quantity of the fluid to pass through the conduit while the plug moves from the conduit start to the conduit end. The conduit end may form a seat, the plug being configured to stop moving upon reaching the seat. The plug may be configured to fit the seat imperfectly, to allow a seepage of the fluid after reaching the seat. | 01-28-2016 |
