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| Number | Title | Issue Date |
| 7360611 | Flow system for a hydraulic choke solids strainer A strainer system having two separate strainers positioned in parallel, where one strainer can be cleaned while still permitting normal flow through the other strainer. The system flow circuit is arranged so that a high pressure backwashing flow can be applied to on... | 04/22/2008 |
| 7309470 | Methods and apparatus for improved fluid control utilizing a U-valve employing a bidirectional check valve A U-valve apparatus including a bidirectional check valve for controlling the flow of liquid from a vessel while preventing inadvertent discharge from the vessel. The check valve allows passage of a fluid such a gas into the vessel, for purposes of agitating the liq... | 12/18/2007 |
| 7165545 | Splash protection device for snorkel A splash protector mounted at top of snorkel is disclosed and includes a tube-shaped adapter unit secured to the snorkel and including a passage; a float unit pivotably secured to the adapter unit and including a projected lever and two upper engagement members (e.g... | 01/23/2007 |
| 7118549 | Shunt system including a flow control device for controlling the flow of cerebrospinal fluid out of a brain ventricle An anti-siphon device limits the flow of a fluid from a first region of a patient's body to a second region. The device includes a housing having a spherical inner surface with a predetermined inner diameter. The housing has an inlet port for receiving fluid from th... | 10/10/2006 |
| 7077127 | Flip top valve for dry snorkels The instant invention is a valve for the top end of skin diving snorkels having a conduit with an open end above the water surface, and an underwater end that terminates in a mouthpiece. The mouthpiece provides a flow path between the conduit and the interior of the... | 07/18/2006 |
| 6994085 | Splash guard for a snorkel A splash prevention device, mounted on top of the breathing tube of a snorkel, including a housing having an oblique opening in communication with the breathing tube, a U-shaped pivotal member pivotally mounted on the housing, a float member pivotally located on two... | 02/07/2006 |
| 6907898 | Fluid shutoff apparatus A fluid shutoff apparatus utilizes a float [121] of a float chamber [115] connected to a float-operated valve [113] to provide positive shutoff of fluid to a downstream load upon excessive flow from the fluid outlet [109] of the apparatus... | 06/21/2005 |
| 6848465 | Dual-action vent check valve A dual-action vent check valve is disclosed. The valve includes a first check valve which is responsive to elevated fluids inside the valve. A second check valve is responsive to elevated fluids external to the valve. The first check valve prevents overflow from a v... | 02/01/2005 |
| 6846461 | Methods and apparatus for improved fluid control utilizing a U-valve employing a flow-interruption device A U-valve apparatus including a bidirectional check valve for controlling the flow of liquid from a vessel while preventing inadvertent discharge from the vessel. The check valve allows passage of a fluid such a gas into the vessel, for purposes of agitating the liq... | 01/25/2005 |
| 6254835 | Methods and apparatus for improved fluid control utilizing a u-valve employing a bidirectional check valve A U-valve apparatus including a bidirectional check valve for controlling the flow of liquid from a vessel while preventing inadvertent discharge from the vessel. The check valve allows passage of a fluid such a gas into the vessel, for purposes of agitat... | 07/03/2001 |
| 6213146 | Valve assembly for preventing liquid ingestion and methods A valve assembly includes a housing and a float. The housing is constructed and arranged to inhibit movement of the float between a resting position to a position where it is situated in its valve seat, unless a selected liquid volume within the valve hou... | 04/10/2001 |
| 6209559 | Valve assembly for preventing liquid ingestion and methods A valve assembly includes a housing and a float. The housing is constructed and arranged to inhibit movement of the float between a resting position to a position where it is situated in its valve seat, unless a selected liquid volume within the valve hou... | 04/03/2001 |
| 6009898 | Valve assembly for preventing liquid ingestion and methods A valve assembly includes a housing and a float. The housing is constructed and arranged to inhibit movement of the float between a resting position to a position where it is situated in its valve seat, unless a selected liquid volume within the valve hou... | 01/04/2000 |
| 5711339 | Fuel outflow preventing valve device A fuel outflow preventing valve device of the invention is formed of a housing, a plurality of valves, and a plurality of energizing members. The housing has a flow path, a plurality of orifices communicating with the flow path, a plurality of cavities, a... | 01/27/1998 |
| 5613513 | Liquid flow control device A system and a method are provided for controlling flow of air and preventing flow of liquid within vent lines connected to, for example, a pipe line or other like piping systems. A housing is provided with a float and a seat within the housing having an ... | 03/25/1997 |
| 4059127 | Self-cleaning non-return drainage valve A non-return drainage valve adapted for use with a container for drainage of fluids from the container through the valve and for prevention of the passage of liquid into the container, the valve including a buoyant plug member and probe means movable with... | 11/22/1977 |
