2310 results about "Double walled" patented technology

A grow light having an exterior shell with an air inlet and a hot air exhaust outlet, and a specular interior insertable into the shell. The sides of the specular insert are spaced apart from the walls of the shell so as to form a double-walled housing having air cooling chambers and vents which facilitate the movement and exhaust of air heated by high intensity light bulbs.

A double walled stent system particularly suited for treating abnormalities of the right ventricular outflow tract is disclosed having an exterior stent component and an interior stent component. The exterior stent component is secured to the interior stent component in a non-fixed, sliding relationship. The exterior stent component includes a plurality of longitudinally-extending connectors such as straight or sinusoidal bands. The interior stent component has a generally tubular cylindrical body and is centered within the exterior stent component. The stent system has a contracted delivery configuration and a radially expanded configuration for contacting the vessel wall. When deployed, the longitudinally-extending connectors of the exterior stent component come in contact with the vessel wall and fix the stent system to the treatment site. The interior stent component also radially expands but remains centered inside the exterior component and makes little to no contact with the vessel wall.

A seat frame for a vehicle or other seating comprises a seat back and a seat pan formed of molded double wall members having thin, substantially closed exterior walls and a substantially open interior. The exterior walls include front and back sections having a cavity therebetween, secured together to form a hollow, box beam type of structure. Integrally formed, spaced cup-shaped standoffs extend between the front and back sections between side walls thereof and provide internal reinforcement of the seat member between the side walls. The seat back includes a cavity for a seat back reinforcement member for either a restraint or non-restraint seat.

Single-walled carbon nanotubes have been synthesized by the catalytic decomposition of both carbon monoxide and ethylene over a supported metal catalyst known to produce larger multi-walled nanotubes. Under certain conditions, there is no termination of nanotube growth, and production appears to be limited only by the diffusion of reactant gas through the product nanotube mat that covers the catalyst. The present invention concerns a catalyst-substrate system which promotes the growth of nanotubes that are predominantly single-walled tubes in a specific size range, rather than the large irregular-sized multi-walled carbon fibrils that are known to grow from supported catalysts. With development of the supported catalyst system to provide an effective means for production of single-wall nanotubes, and further development of the catalyst geometry to overcome the diffusion limitation, the present invention will allow bulk catalytic production of predominantly single-wall carbon nanotubes from metal catalysts located on a catalyst supporting surface.

In this device for controlling the temperature of a battery of cylindrically-shaped electrochemical cells placed side by side, heat is conveyed by the flow of a heat-conveying fluid, which flow takes place inside a double wall whose section is in the form of circular arcs interconnected at their ends so that the junction points between the arcs are substantially in alignment. Relief is disposed in a baffle configuration inside the double wall to constrain the fluid to flow parallel to said section, alternately in one direction and then in the opposite direction. The wall is disposed against the battery in such a manner that each of the circular arcs is disposed coaxially against one of the cells.

The present invention relates to a carbon-silicon composite material. It includes silicon matrix and carbon nano tube or nano carbon fibre grown on the matrix. The average grain size of the described silicon matrix is 100 nm-100 micrometer, the diameter of the described carbon nano tube or nano carbon fibre is 1-200 nm and its length is 1 nm-100 micrometer. The described carbon nano tube is single-wall, double-wall or multiwall. Said invention also provides its preparation method and concrete steps.

The exhaust sound and emission control system is a system for reducing sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator having one or more catalytic converter elements in combination therewith in a single device. Alternatively, the system may have multiple angularly disposed chambers therein, with a series of V-shaped baffles or guides in one of the chambers, thereby combining resonator and muffler functions in a single device. In another alternative, the system has a series of longitudinal tubes therein, in combination with a series of V-shaped guides or vanes, combining catalytic converter, muffler, and resonator functions in a single device. The various elements of the different embodiments, e.g. catalytic converter element(s), double wall shell, perforated tubes and multiple flow paths, interconnecting crossover tubes, etc., may be combined with one another as practicable.

Provided herein composition and methods for nanoporous membranes comprising single walled, double walled, or multi-walled carbon nanotubes embedded in a matrix material. Average pore size of the carbon nanotube can be 6 nm or less. These membranes are a robust platform for the study of confined molecular transport, with applications in liquid and gas separations and chemical sensing including desalination, dialysis, and fabric formation.

A rechargeable lithium ion button cell battery having a sealed housing comprises an inner casing and an outer casing, both casings have at least one flat area as top or bottom of the battery, and a round or oval side wall vertically formed to the flat area. Said side walls are single wall not folded double walls. An insulation gasket is positioned between said side walls, and the outer casing opening is mechanically crimped to complete the seal of the battery. Inside the sealed housing the anode & cathode electrodes are spiral wound with separator to be a round or oval roll. Said roll axis is vertical to the said flat areas of the casings. The two electrodes are tapered in width and comprise current collectors of metal foils coated with lithium-intercalating active materials, leaving small area of uncoated metal foils as welding tabs for connecting to the casings. The tabs are welded to the casings respectively, or for the tab of the electrode which connecting to outer casing, welded to an aluminum flake first and said flake is pressed on the outer casing by said gasket. Two insulation washers could be applied to inner side of the casings to prevent short circuit. Such battery has high energy density, low impedance, high reliability and long cycle life.

A double walled polycarbonate liquid holding vessel. The vessel may have an inner wall and an outer wall that are coupled to each other in a manner that defines an air tight gap therebetween. A resealable unit may be provided with the vessel that permits resealable access to the interior of the inner wall. The outer wall may be multi-section or single section, and various techniques may be used to conceal joints used to mount the outer wall to the remainder of the vessel. Various embodiments are disclosed.

The present invention relates to cooling/heating units and their installation to wall or window openings, and more particularly pertains to a new and improved casing to secure the air conditioner while protecting against heat leakages through the casing itself. The wall casing is a cabinet structure containing a top side, a bottom side opposing the top side, and two opposing lateral sides being approximately orthogonal to the top and bottom sides. The top, bottom, and lateral sides forming substantially a box with the front and back opened. Each of the sides is double-walled and filled with an insulating material.

The invention discloses a graphene and carbon nanotube mixed enhanced metal-matrix composite material and a preparation method thereof. The graphene and carbon nanotube mixed enhanced metal-matrix composite material is characterized in that graphene and a carbon nanotube are mutually connected to constitute an enhanced network in a metal matrix, wherein the graphene is few-layer graphene with 10 layers or less, the radius-thickness ratio of the graphene is larger than 200, and the volume fraction of the graphene is 0.1-1%; and the carbon nanotube is a single-wall, double-wall or multi-wall carbon nanotube, the length-diameter ratio of the carbon nanotube is larger than 20, and the volume fraction of the carbon nanotube is 0.5-5%. Compared with the composite material enhanced only by the carbon nanotube, the graphene and carbon nanotube mixed enhanced metal-matrix composite material disclosed by the invention not only has greatly improved mechanical properties, but also has more excellent electric conduction and heat conduction properties, and is a multi-purpose structure and function integrated material. In addition, the preparation method provided by the invention based on slurry blending and graphene oxide reduction is simple and efficient and is easy for large-scale production.

A thermally insulated beverage glass is provided as an insulated drinking glass made from glass with an interstitial space in the sides and bottom. The sides and bottom of the glass are double-walled, forming an interstitial space for insulating purposes. The interstitial space can be left filled with air, or filled with an insulating material such as Styrofoam(R). The interstitial space not only reduces or eliminates condensation from forming on the exterior of the glass when filled with cold liquid on hot, humid days, but it also helps keep the liquid cooler. Alternately, when the glass is filled with hot liquid it also aids in keeping the liquid hotter, longer.