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| Number | Title | Issue Date |
| 7069730 | Liquid and compressed natural gas dispensing system A system dispenses both liquid natural gas (LNG) and compressed natural gas (CNG). A bulk tank contains a supply of LNG which is pumped to a smaller storage tank. After the storage tank is refilled, LNG from the bulk tank is pumped to a vaporizer so that CNG is prod... | 07/04/2006 |
| 7025083 | Quick closing shut-off valve A quick closing shut-off valve includes an inlet, an outlet and a passage there between. A closing element blocks the passage when in the closed position. The closing element is interconnected to a piston via a pull rod. The piston is positioned within a working cha... | 04/11/2006 |
| 6955095 | Accurate cryogenic liquid dispenser A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose... | 10/18/2005 |
| 6938581 | Supplemental water heater tank and system A supplemental water heater tank and system features a supplemental tank with an inner vessel surrounded by an outer jacket. The space there between is generally evacuated of air so that the inner vessel is vacuum insulated. The supplemental tank includes water inle... | 09/06/2005 |
| 6910482 | Self-calibrating supplemental oxygen delivery system An on demand supplemental oxygen delivery system that is self-calibrating includes a tank containing a supply of oxygen and a nasal cannula through which the oxygen may be provided to a patient when the system solenoid valve is in the open condition. When the valve ... | 06/28/2005 |
| 6851148 | Carbon dioxide dry cleaning system A carbon dioxide dry cleaning system features a pair of liquid carbon dioxide storage tanks in communication with a compressor. A sealed cleaning chamber contains the objects to be cleaned. By selectively pressurizing the storage tanks with the compressor, liquid ca... | 02/08/2005 |
| 6799429 | High flow pressurized cryogenic fluid dispensing system A high pressure cryogenic fluid dispensing system features a tank containing a cryogenic liquid with a liquid side and a head space there above. A pressure building coil featuring a section of parallel heat exchangers and a section of series heat exchangers receives... | 10/05/2004 |
| 6786053 | Pressure pod cryogenic fluid expander A system that generates high pressure cryogenic gas includes a storage tank that contains a liquid cryogen and a feed line that supplies the liquid cryogen to a pressure pod. The pressure in the pressure pod gradually increases due to ambient heat to a first predete... | 09/07/2004 |
| 6787713 | Load cell and weighing system for cryogenic tanks A load cell and system for detecting the quantity of liquid carbon dioxide in a tank includes load cells positioned between the legs of the tank and a surface. Each load cell includes a frame constructed from a folded metal plate so that a top panel, sides and ends ... | 09/07/2004 |
| 6732594 | Accurate cryogenic liquid dispenser A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose... | 05/11/2004 |
| 6698211 | Natural gas fuel storage and supply system for vehicles A natural gas fuel storage and supply system, particularly suited for use in vehicles powered by liquid natural gas (LNG), includes an insulated tank containing a supply of LNG with a headspace there above. A pump and a vaporizer are in circuit between th... | 03/02/2004 |
| 6692034 | Breakaway device for fueling stations A breakaway device joins a portion of a dispensing hose that is connected to a fueling station with a portion of a dispensing hose that is joined to a coupling that connects to a vehicle during fueling. The breakaway device includes a pair of leg members ... | 02/17/2004 |
| 6640554 | Containment module for transportable liquid natural gas dispensing station A portable self-contained liquid natural gas (LNG) dispensing system is housed in a container featuring opposing side and end walls and a bottom panel. The container is divided into a ventilated portion and a covered portion. A roof is over the covered po... | 11/04/2003 |
| 6631615 | Storage pressure and heat management system for bulk transfers of cryogenic liquids A system for transferring and conditioning a cryogenic liquid includes a replenishing tank containing a supply of cryogenic liquid, a bulk tank and a pump positioned there between. The pump causes a stream of the cryogenic liquid to flow from the replenis... | 10/14/2003 |
| 6622758 | Interlock for cryogenic liquid off-loading systems A cryogenic system that off-loads cryogenic liquid from a delivery vehicle and pumps the cryogenic liquid to a storage tank includes an interlock that enables the pneumatic valves which control the flow of the cryogen. The interlock includes a pneumatic r... | 09/23/2003 |
| 6615861 | Liquid cylinder manifold system A dispensing system allows cryogenic liquid to be dispensed from either a primary bank manifold and associated cylinders or a secondary bank manifold and associated cylinders. Each manifold includes a gas header and a liquid header. The associated cylinde... | 09/09/2003 |
| 6598423 | Sacrificial cryogen gas liquefaction system A liquefaction system includes a source tank containing a supply of liquid nitrogen with a head space there above filled with nitrogen vapor. A pump transfers the liquid nitrogen to a heat exchanger. The heat exchanger also receives natural gas that has b... | 07/29/2003 |
| 6595048 | Accurate cryogenic liquid dispenser A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing liquid natural gas (LNG) to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned betwe... | 07/22/2003 |
| 6581390 | Cryogenic fluid delivery system A cryogenic fluid delivery system includes an insulated storage tank containing a supply of cryogenic liquid, a pump, a heat exchanger and a gas and liquid mixer. The pump includes a pumping cylinder within which a sliding pumping piston is positioned. Th... | 06/24/2003 |
| 6542848 | Differential pressure gauge for cryogenic fluids A differential pressure gauge for a cryogenic storage tank provides onboard entry, by an operator, of tank dimensions, tank orientation, and the type of liquid stored within the tank. A differential pressure sensor supplies a signal corresponding to a dif... | 04/01/2003 |
| 6505470 | System for detecting overflow of a tank In a system for detecting overflow of a liquid cryogen storage tank, a differential pressure gauge measures the pressure of the tank at the top and bottom of the tank while liquid cryogen is introduced into the tank. Once the measurement reaches a predete... | 01/14/2003 |
| 6505469 | Gas dispensing system for cryogenic liquid vessels A cryogenic vessel features an inner tank containing cryogenic liquid with a head space above and a jacket surrounding the inner tank. An internal pressure builder coil is helically disposed about the inner tank, connected to the jacket and in communicati... | 01/14/2003 |
| 6474115 | Shaft seal system with leak management A cartridge housing surrounds a shaft for rotating a basket within the pressurized cleaning vessel of a dry cleaning system that utilizes liquid carbon dioxide as a solvent. Primary and secondary seals are disposed between the cartridge housing and the sh... | 11/05/2002 |
| 6442980 | Carbon dioxide dry cleaning system A carbon dioxide dry cleaning system features a pair of liquid carbon dioxide storage tanks in communication with a compressor. A sealed cleaning chamber contains the objects to be cleaned. By selectively pressurizing the storage tanks with the compressor... | 09/03/2002 |
| 6393847 | Liquid cryogen freezer An improved liquid cryogen dewar for storing cryobiological materials is disclosed having an inner tank with a reservoir holding a pool of liquid cryogen. A rotatable tray is contained within the inner tank, containing a platform, vertical dividers and a ... | 05/28/2002 |
| 6354088 | System and method for dispensing cryogenic liquids A system for dispensing cryogenic liquid to a use device tank from a bulk storage tank containing a supply of cryogenic liquid features a pump in communication with the bulk storage tank, a dispensing line in communication with the pump and a heater in co... | 03/12/2002 |
