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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 6732535 | Device for closing and connecting to external conduits a reservoir of cryogenic fluid, and reservoir provided with such a device The device comprises a monobloc subassembly (1) of cast stainless steel comprising a principal portion in the form of a disc (4) mounted on a collar (2) of the reservoir (3) and defining at least two channels (8, 9) for the passage... | 05/11/2004 |
| 6688128 | Material for the controlled vaporization of a liquid cryogen A shaped article is capable of at least one of containing and delivering a cryogenic fluid. The article has a porous structure that restricts the passage of cryogenic fluid in the liquid phase while permitting the passage of cryogenic fluid in the gaseous... | 02/10/2004 |
| 6644042 | Material for the controlled vaporization of a liquid cryogen A shaped article is capable of at least one of containing and delivering a cryogenic fluid. The article has a porous structure that restricts the passage of cryogenic fluid in the liquid phase while permitting the passage of cryogenic fluid in the gaseous... | 11/11/2003 |
| 6644040 | Material for the controlled vaporization of a liquid cryogen A shaped article is capable of at least one of containing and delivering a cryogenic fluid. The article has a porous structure that restricts the passage of cryogenic fluid in the liquid phase while permitting the passage of cryogenic fluid in the gaseous... | 11/11/2003 |
| 6637240 | Nitrogen generation process A process for producing a nitrogen-enriched vapor product from a supply of a nitrogen-rich liquid uses a purifying device and a distillation column having a distillation zone. The process includes the steps of: feeding at least a portion of the supply of ... | 10/28/2003 |
| 6637238 | Compression apparatus for gaseous refrigerant An apparatus for compressing gaseous refrigerant for use in a refrigeration circuit of a liquefaction plant, which refrigeration circuit has an inlet, a first outlet for refrigerant at low pressure, a second outlet for refrigerant at intermediate pressure... | 10/28/2003 |
| 6634178 | Method for adjusting the pressure in a cryogenic tank and corresponding device In a prior-art method to regulate the pressure inside a cryogenic tank containing cold gas when a main stream for a consumer is withdrawn, heated gas in the form of a heating gas secondary stream, which is regulated as a function of the tank pressure, is ... | 10/21/2003 |
| 6629418 | Two-stage inter-phasing pulse tube refrigerators with and without shared buffer volumes Disclosed are two-stage inter-phasing pulse tube refrigerators with and without shared buffer volumes.... | 10/07/2003 |
| 6622512 | Material for the controlled vaporization of a liquid cryogen A shaped article is capable of at least one of containing and delivering a cryogenic fluid. The article has a porous structure that restricts the passage of cryogenic fluid in the liquid phase while permitting the passage of cryogenic fluid in the gaseous... | 09/23/2003 |
| 6622493 | Material for the controlled vaporization of a liquid cryogen A shaped article is capable of at least one of containing and delivering a cryogenic fluid. The article has a porous structure that restricts the passage of cryogenic fluid in the liquid phase while permitting the passage of cryogenic fluid in the gaseous... | 09/23/2003 |
| 6616651 | Intravascular microcatheter with embedded helical coil reinforcement member and methods and apparatus for making same A unitary intravascular microcatheter with a continuous embedded helical coil reinforcement member and a method for making same are provided. Multiple catheters are manufactured from a continuous feedstock to reduce manufacturing time and labor cost. A se... | 09/09/2003 |
| 6615605 | Method and apparatus for adjusting device used at low temperature without deterioration thereof A method and apparatus for adjusting a device is provided in which characteristics of the device used at low temperature such as a high temperature superconductive filter are measured and adjusted without deterioration of the device. The device used at lo... | 09/09/2003 |
| 6612129 | Process and apparatus for producing krypton and/or xenon by low-temperature fractionation of air In a process and apparatus used to produce krypton and/or xenon by low-temperature fractionation of air, compresses and clean charge air (1) is introduced into a rectification system for nitrogen-oxygen separation. The rectification system includes at lea... | 09/02/2003 |
| 6609381 | Controlled fill station for delivery of a measured amount of cryogenic gas to a cylinder The present invention is an integrated unit liquified gas fill station attached to a cryogenic storage tank and pump which provides for a controlled delivery of a programed weighted amount of a cryogenic liquified gas, primarily carbon dioxide, to empty t... | 08/26/2003 |
| 6604363 | Matching an acoustic driver to an acoustic load in an acoustic resonant system A method for matching an acoustic load and an acoustic driver in a resonant acoustic system, and the acoustic system so formed. The load and driver may be independently designed. The invention provides, inter alia, a matching volume positioned between the... | 08/12/2003 |
| 6604364 | Thermoacoustic cogeneration system A method for operating a thermoacoustic engine which produces acoustic energy which may be used to generate refrigeration wherein energy delivery fluid from a hot energy source, which provides heat to the thermoacoustic engine, is used to provide heat to ... | 08/12/2003 |
| 6604365 | Thermal link assembly and cryostat using same A thermal link assembly provides thermal connection between a first thermally conductive part to which it is secured, and a second thermally conductive part which is generally disk-shaped and has a peripheral cylindrical surface. The thermal link assembly... | 08/12/2003 |
| 6605055 | Balloon catheter with irrigation sheath The present invention is directed to a balloon catheter having an irrigation sheath. The balloon catheter has a first expandable membrane forming an occluding balloon. A second membrane forms a sheath about the occluding balloon for providing irrigation t... | 08/12/2003 |
| 6601406 | Methods and apparatus for high propane recovery Methods and configurations for improved propane recovery plant employ an absorber column, and a deethanizer column with an overhead condenser that produces a reflux condensate. The reflux condensate is recycled to both the absorber column and the deethani... | 08/05/2003 |
| 6598407 | Method and apparatus for efficient injection of CO2 in oceans A liquid CO2 injection system produces a negatively buoyant consolidated stream of liquid CO2, CO2 hydrate, and water that sinks upon release at ocean depths in the range of 700-1500 m. In this approach, seawater at a pred... | 07/29/2003 |
| 6598424 | Process and apparatus for separating a gas mixture with emergency operation The process and the apparatus serve for separating a gas mixture in a separation plant. A feed gas (18) is introduced into a compressor system (6, 16) and then into the separation plant. In the event of loss or partial loss of the compressor system (6, 16... | 07/29/2003 |
| 6598406 | Wave spring loaded split seal system A piston includes a circumferential groove having a seal ring and spring mounted within the groove. The spring exerts an axial force on the seal ring thereby preventing motion of the seal ring within the groove. Preferably, the spring in a wave spring, wh... | 07/29/2003 |
| 6595006 | Miniature reciprocating heat pumps and engines The present invention discloses a miniature thermodynamic device that can be constructed using standard micro-fabrication techniques. The device can be used to provide cooling, generate power, compress gases, pump fluids and reduce pressure below ambient ... | 07/22/2003 |
| 6591616 | Hydrogen infrastructure, a combined bulk hydrogen storage/single stage metal hydride hydrogen compressor therefor and alloys for use therein A combine bulk storage/single stage metal hydride compressor, a hydrogen storage alloy therefore and a hydrogen transportation/distribution infrastructure which incorporates the combine bulk storage/single stage metal hydride compressor.... | 07/15/2003 |
| 6592550 | Medical device including improved expandable balloon A medical device (10) includes a catheter shaft (11) including inner and outer catheter shafts (12 and 14), and an expandable balloon (18) carried by the catheter shaft (11). The balloon (18) is made from an irradiation cross-linked mixture of a polyamide... | 07/15/2003 |
| 6591632 | Cryogenic liquefier/chiller A system for chilling and/or liquefying a fluid wherein a multicomponent refrigerant in a circuit is compressed, condensed, expanded and warmed to cool one or more portions of the fluid which are then turboexpanded to generate refrigeration and which are ... | 07/15/2003 |
| 6584803 | Nitrogen rejection method and apparatus Nitrogen is rejected from a feed gas stream comprising methane and nitrogen so as to form a methane product. The feed gas stream is cooled in a main heat exchanger and rectified in a double rectification column comprising a higher pressure column, a lower... | 07/01/2003 |
| 6582394 | Stent and catheter assembly and method for treating bifurcated vessels An apparatus and method is provided for stenting bifurcated vessels. A main-vessel stent and delivery system is provided for implanting a stent in the main vessel of a bifurcated vessel, wherein the main-vessel stent has an aperture bordered by closed ste... | 06/24/2003 |
| 6581410 | Low temperature separation of hydrocarbon gas The invention provides a process for the separation of a heavier hydrocarbon fraction from a gaseous feed comprising a mixture of hydrocarbons, which process comprises subjecting the feed to a first fractionation to form a condensed product; subjecting th... | 06/24/2003 |
| 6581412 | Gas delivery at high flow rates This invention is directed to a method for delivering a liquefied compressed gas with a high rate of flow comprising passing a liquefied compressed high-purity semiconductor gas into a storage vessel; positioning a temperature measuring means onto the wal... | 06/24/2003 |
| 6581409 | Apparatus for the liquefaction of natural gas and methods related to same An apparatus and method for producing liquefied natural gas. A liquefaction plant may be coupled to a source of unpurified natural gas, such as a natural gas pipeline at a pressure letdown station. A portion of the gas is drawn off and split into a proces... | 06/24/2003 |
| 6578379 | Process and installation for separation of a gas mixture containing methane by distillation A process and apparatus for separation of a gas mixture. A process and an installation for cryogenic separation of the constituents of a natural gas under pressure in a first phase separator in which the constituents of each phase are separated in a disti... | 06/17/2003 |
| 6578378 | Process and installation for recovery and purification of ethylene produced by pyrolysis of hydrocarbons, and gases obtained by this process A process for the high-yield recovery of ethylene and heavier hydrocarbons from the gas produced by pyrolysis of hydrocarbons in which the liquid products resulting from the fractionated condensation of a cracking gas for the recovery of almost all the et... | 06/17/2003 |
| 6574972 | Low temperature heat transfer methods Methods of cooling an object are presented, the methods comprising contacting a heat transfer fluid with a liquid cryogen to form a precooled, substantially pure heat transfer fluid, and contacting the object with the precooled substantially pure heat tra... | 06/10/2003 |
| 6574968 | High frequency thermoacoustic refrigerator A thermoacoustic refrigerator having a relatively small size which utilizes one or more piezoelectric drivers to generate high frequency sound within a resonator at a frequency of between about 4000 Hz and ultrasonic frequencies. The interaction of the hi... | 06/10/2003 |
| 6568210 | Method and apparatus for obtaining a gaseous product by cryogenic air separation A method to obtain a gaseous product by the low temperature fractionation of air includes supplying a first, purified and cooled stream of air to a high-pressure column. At least one liquid stream from the high-pressure column is passed into a low-pressur... | 05/27/2003 |
| 6568207 | Integrated process and installation for the separation of air fed by compressed air from several compressors In an integrated process an air separation unit A receives compressed air from the compressor S of a blast furnace B and the compressor K of a gas turbine C. Nitrogen enriched air N from the air separation unit is sent to the gas turbine and oxygen enrich... | 05/27/2003 |
| 6569129 | Biological revascularization A catheter delivery system for delivering a treatment substance to an occlusion in a lumen of a tubular vessel includes a tubular catheter and a treatment substance. The tubular catheter includes a central lumen passing between a proximal end and a distal... | 05/27/2003 |
| 6568206 | Cryogenic hydrogen and carbon monoxide production with membrane permeate expander A process for recovering a first component and/or a second component from a multicomponent feed gas mixture containing the first component and the second component includes multiple steps. The first step is to pass the feed gas mixture through a membrane ... | 05/27/2003 |
| 6569146 | Method and apparatus for treating saphenous vein graft lesions A method for treating loosely formed, friable or fragile lesions in a patient's blood vessel. A catheter having a pair of sealing mechanisms is advanced such that the sealing mechanisms are positioned distal to and proximal to the lesion. The sealing mech... | 05/27/2003 |
