Abstract:
An improved nested tube cryogenic support and its method of manufacture includes a plurality of nested tube assemblies each including an FRP tube having a metal connector element integrally joined at each end thereof by forming a groove around the outer periphery of the connector elements, forming the end portion of the uncured FRP tube into the groove, and applying a prestressed fiber reinforced plastic band around the outer periphery of the tube at the groove to apply a compressive force reinforcing the joint between the connector elements and the tube.
Abstract:
A conversion kit is utilized in combination with an air tank for containing pressurized air to include a series of inner communicating fittings mounted to a primary distribution block for utilization of the container as a transportable source of pressurized air. A modification of the invention includes the kit structure in cooperation with a cage organization to afford protection to the pressurized container minimizing damage thereto.
Abstract:
Fire resistant tank apparatus is adapted for transportation and for installation above-ground to receive and dispense a liquid hydrocarbon or hydrocarbons, or the like, and includes a metallic tank assembly having a lightweight, triple hulled, wall structure, defining inner, intermediate and outer walls which are spaced apart. Thermal barrier material is located in certain space between such walls, and in such manner that there is no direct heat conducting metallic path between such walls, as for example the intermediate and outer walls. In addition, fire resistant material may be applied to the outer side or sides of the outer walls and hardened to define a relatively lightweight shell enclosing the tank assembly. The structure resists severe heat invasion in the form of radiation, convection and conduction to maintain liquid hydrocarbon in the innermost tank isolated from such invasion. Also, the structure is bullet resistant.
Abstract:
A mobile carrier capable of carrying a number of gas cylinders comprises a generally horizontal first support surface with at least three wheel supports rigidly attached to it, each wheel support including a rotatably mounted wheel. The wheel supports are off-set laterally relative to the first support surface, the first support surface being below the top of at least one wheel support. An upright frame rigidly connected to the first support surface extends around three sides of the carrier. A second support surface is pivotally connected to an outside edge of the first support surface along a fourth open side of the carrier. The second support surface is pivotable between an upright position, where it may be secured to the frame, and a lowered position in which the second support surface is supported on another surface so that a gas cylinder may be moved between the mobile carrier and another surface by rolling the container about its axis between the first support surface and the other support surface along the second support surface.
Abstract:
Process for recovering acetone from used acetylene cylinders in order to make the cylinders disposable as a solid waste. A system is described for effecting the acetone recovery.
Abstract:
An apparatus and method for high pressure gas filling of gas cylinders is disclosed. The apparatus includes an elongated filling tube for a pressurized gas cylinder having a valve regulator/fitting sealed in an opening at one end of the gas cylinder, the elongated filling tube extending within the cylinder and being attached at one end to the valve regulator/fitting. The elongated filling tube is provided with longitudinally spaced transverse openings along the length thereof to facilitate intermixing of gases injected into the cylinder under pressure. The method of high pressure gas mixing within a pressurized cylinder includes the steps of injecting a predetermined volume of a first gas under a predetermined pressure into the cylinder, and injecting a remaining volume of at least one other gas under a greater predetermined pressure into the cylinder, while also intermixing the molecules of the first and the at least one other gas together throughout the cylinder in order to produce a desired gas mixture within the pressurized cylinder.
Abstract:
A fuel tank for a propane fuel tank includes an electrically insulative covering positioned in place over substantially the entire exposed surface of the tank to prevent transmission of electric current through the tank by contact of the tank with a source of current. The insulation on the tank also prevents penetration of the tank by arcing of electric current from a spaced apart current source and the tank. The fuel tank is cylindrical and the covering comprises an eight mil thick seamless tube of polyethylene secured by heat shrinking to the outer surfaces of the cylindrical tank. The method according to the invention comprises providing an electrically insulative material, placing the insulative material over the outer surfaces of the tank and bonding the insulative material to the outer surface of the tank.
Abstract:
A cold exchange system includes a Dewar flask having an inner vessel and an exterior vessel joined to and surrounding the inner vessel, defining an evacuable chamber therebetween. The flask includes an evacuation port through the inner and exterior vessels through which cryogenic gas contained in the inner vessel can evaporate during the cold exchange process. The exterior vessel includes a device port through which a device to be cooled extends. The device is housed in a housing that is engaged over the device port. A cold finger is in heat transfer contact with the inner vessel. A non-metallic flexible bellows is sealingly adhered to the cold finger at one open end of the bellows. The other open end of the non-metallic bellows is sealingly adhered at its other open end to a top plate which is vacuum fitted over the device port. The non-metallic bellows and device housing define a second evacuable chamber separate from the Dewar flask vacuum chamber. The separation of the vaccum chambers is maintained by the non-metallic bellows and adhesive joints between the bellows and the cold finger and top plate. The device to be cooled is mounted in direct mechanical contact with the cold finger within the device chamber defined by the non-metallic bellows. The joint between the non-metallic bellows and the metallic cold finger and top plate is formed by an adhesive compound essentially containing an admixture of an epoxy with fine grain beads. The beads each generally have the same outer diameter to create a uniform adhesive joint, to insure a vacuum tight seal, and to provide a uniform spacing of the bellows from the aluminum components to insure long-term vacuum integrity of the adhesive joint during repeated thermal cycling.
Abstract:
An all plastic one piece blow molded pressure vessel and sprayer combination shows a bottom closure with upwardly inclined feet. Internal pressure causes the upward and inward portion of the feet to descend such that the feet remain in good contact with a planar surface on which the vessel is resting, such that the bottom does not become bulged outwardly and rock.