191 results about "Reduced mass" patented technology

An apparatus for launching and dispensing multiple satellites into orbit includes a central structure and a plurality of satellites releasably bundled around the central structure to form a cohesive, single payload mounted on an upper stage of a launcher rocket. The central structure includes a central tube and an adapter shell that fits onto the upper stage of the rocket. Each satellite has the shape of a partial cylinder segment of which an outer wall is a cylindrical segment shell. The satellites are bundled and secured together around the central structure by tension bands, whereby the cylindrical segment shells form a load-bearing complete outer cylindrical shell that surrounds the central tube. This structure provides sufficient stiffness and strength to withstand the loads that arise during launch, while having a reduced mass. The satellites themselves, rather than the central structure, bear the loads during launch. This allows the central structure to be of relatively lightweight construction.

A linear motor includes a stator including a stator core for forming plural magnetic poles and a magnetic wire mounted on the stator core, and a mover provided at the interior of the stator and including a mover core and a magnet mounted on the outer side of the mover core. The linear motor has the magnet have a reduced mass, thus having a small size, a low overall cost, and a high operating efficiency.

Methods and compositions are disclosed whereby free antibody or nucleic acid co-administered with a long-acting formulation, such as a microparticle or implant, containing the antibody or nucleic acid to achieve a long duration of antibody or nucleic acid release. One result is that less of the long-acting formulation excipient or polymer is needed allowing for small-volume administrations as required, for example, for ocular, intra-dermal, orthopedic, brain and spinal delivery. In one aspect, the free antibody or nucleic acid alone has efficacy for an extended period, during which time, very little or no long-acting formulation antibody or nucleic acid is released. In one aspect, after the free antibody or nucleic acid has diminished activity, is gone, or no longer has activity, the long-acting formulation antibody or nucleic acid begins to release for a desired preprogrammed duration to provide long-acting durations. Less formulation mass is needed because the entire antibody or nucleic acid is not encapsulated or implanted with encapsulation or implant excipient or polymer. In addition, more antibody or nucleic acid can be administered to afford longer-acting formulations.

A membrane humidifier for a fuel cell system is disclosed wherein the membrane humidifier includes a plurality of membrane layers, a first pair of spaced apart sealing bars disposed between a first membrane layer and a second membrane layer adjacent to perimeter edges thereof to form a first flow channel, a second pair of spaced apart sealing bars disposed between the second membrane layer and a third membrane layer adjacent to perimeter edges thereof to form a second flow channel, and a plurality of supports, wherein a first support is disposed adjacent the second planar layer and extending between the second pair of spaced apart sealing bars, and a second support is disposed adjacent the third planar layer and extending between the second pair of spaced apart sealing bars.

The present invention is a technique to fabricate thin-film composite perm-selective membranes by a transfer method. The composite membranes are useful in separating liquid, vapor or gaseous mixtures by selective permeation and reduce mass transfer resistance of the support layer. Selectivity and flux are improved by reduction of the mass transfer resistance of the support layer.

The invention belongs to the technical field of civil engineering and relates to a self-loading device for a test of simulating crustal stress of a surrounding rock on a rock tunnel shaking table. The self-loading device comprises an airbag, an air compressor, a reducing valve and a model box which is provided with four side plates, a top cover and a base, wherein a left side plate is longitudinally and uniformly provided with at least two jacks; a built-in plate which is parallel with the left side plate and has four sides wrapped with rubber is arranged inside the mo0del box; the jacks drive the built-in plate to displace in a horizontal direction so as to realize lateral loading; the air compressor inflates the airbag, and the reducing valve controls the pressure of the airbag; and the airbag is arranged in the model box to realize vertical loading. The device is used for a test on a shaking table to stimulate different initial crustal stress states and provide convenience for researching dynamic response of a tunnel under different work conditions. By adopting an airbag loading way, the self-loading device, disclosed by the invention, can reduce mass of the model box per se to the maximum extent while realizing loading of the test on the shaking table.

The present invention relates to agglomerated zeolitic adsorbents based on zeolite X with an Si/Al ratio such that 1.15<Si/AL<1.5, consisting of crystals with a mean diameter of 1.7 mm or less and of an inert binder, at least 90% of the exchangeable cationic sites of the zeolite X being occupied by barium ions. They may be obtained by agglomerating a zeolite X powder having a mean diameter of 1.7 mm or less with a binder, followed by zeolitization of the binder, exchange of the zeolite ions with barium (and potassium) ions and activation of the adsorbents thus exchanged. These adsorbents exhibit, simultaneously, excellent selectivity, reduced mass transfer resistance and excellent mechanical strength and are particularly suitable for the adsorption of the paraxylene contained in C8 aromatic hydrocarbon fractions in liquid phase in processes of the simulated moving bed type and especially for the separation of paraxylene of C8 aromatic hydrocarbon fractions by adsorption, but also for the separation of sugars, polyhydric alcohols, cresols, and substituted toluene isomers.

The invention discloses a preparation method for a direct methanol fuel cell film electrode, which belongs to field of direct methanol fuel cell. The film electrode employs a proton exchange film as an electrolyte film, a platinum-ruthenium-carbon catalyst as an anode and a platinum-carbon catalyst as a cathode, and is composed of a supporting layer, a micro-pore layer, a catalytic layer, a proton exchange film which are arranged at the anode side and a supporting layer, a micro-pore layer, a catalytic layer which are arranged at the cathode side. The preparation method for the film electrode includes: preparation and pretreatment of the film, preparation of a catalyst paste, preparation of the catalytic layer, preparation of a micro-pore layer paste, preparation of the micro-pore layer and hot pressing process. Advantages of the preparation method are that: the micro-pore layer and the supporting layer prepared by the method have higher porosity, reduce mass transfer resistance of the film electrode, improve interface between the micro-pore layer or the catalytic layer and the supporting layer, thereby increasing three-phase contact area of catalyst and reactant and increasing output power density of the cell.

The present invention relates to bilayer tablet formulations comprising metformin extended release (XR) or reduced mass metformin XR formulation as the first layer, an SGLT2 inhibitor formulation as the second layer, and optionally a film coating. The present invention provides methods of preparing the bilayer tablet formulations and methods of treating diseases or disorders associated with SGLT2 activity employing the bilayer tablet formulations.

A system for controlling a centrifugal gas compressor (108) in an HVAC, refrigeration or liquid chiller system (100) in which flow of gas through the compressor is automatically controlled to maintain desired parameters within predetermined ranges so as to prevent stall and surge conditions within the system. A variable geometry diffuser (119) in the compressor controls the refrigerant gas flow at the discharge of the compressor impeller wheel (201). This arrangement reduces mass flow, decrease/eliminate flow-reducing stall, and increases the operating efficiency of the compressor at partial load conditions. The variable geometry diffuser control in combination with a variable speed drive (VSD) (120) increases the efficiency of the compressor at partial system loads, and eliminates the need for pre-rotation vanes at the inlet of the centrifugal compressor.

The battery package for electric vehicle comprises a group of batteries and a box made of FRP (Fiber Reinforced Plastics) material to protect pole column and prevent short circuit or more damage. This invention has well physical and chemical features, and reduces mass and production cost.

A thin-walled light resin composition engine cover has reduced mass and thickness while retaining radiated sound reduction effects, heat resistance, and mechanical properties. The cover has an average thickness of 2.0 mm or less. The resin composition includes (a) a polyamide resin composed of essentially at least one of scrap of vehicle airbag fabric made of nylon 66 containing a copper-based stabilizer and vehicle airbag fabric recycled, (b) a modified polypropylene resin, (c) a reinforcement material, (d) a metal deactivator and a photo-thermal stabilizer, and (e) a viscosity regulator. The resin composition has a melt flow rate of not less than 40 g/10 min.

The invention provides a speaker unit for low frequency reproduction wherein distortion is reduced and the orientation of a sound image of the lower side frequency region is augmented. To that end, the phase characteristic in an actually used frequency band is made substantially flat. The speaker unit includes a speaker enclosure, a duct formed in the speaker enclosure and having a port thereon, and a speaker mounted in the speaker enclosure. The speaker is formed such that it has a first resonance frequency set higher than a higher side frequency of the actually used frequency band (about 20 Hz to 100 Hz), while the port is formed such that it has a second resonance frequency set lower than a lower side frequency of the used frequency band. For example, the speaker includes a vibrating system having a reduced mass or a reduced compliance with which the first resonance frequency is set higher than the higher side frequency of the actually used frequency band, and the duct has an increased length or a controlled cross sectional area with which the second resonance frequency is set lower than the lower side frequency of the actually used frequency band.