261results about How to "Improve overall strength" patented technology

A quick insertion fastener has an internally threaded first member ("nut") adapted to be quickly attached and tightened on an externally threaded second member ("bolt"). The nut is formed with a casing with an internal frusto-conical front surface, a plurality of threaded shell segments contained in the casing having external frusto-conical front surfaces which abut the front surface of the casing, a spring member positioned at a rear part of the casing which elastically holds the rear ends of the shell assembly together, and an end retainer provided at the rear part of the casing having a taper for engaging the rear ends of the shell assembly and displacing them radially apart when the shell assembly is displaced axially toward the end retainer by insertion of the bolt. This allows the bolt threads to move without interference past the internal threads of the shell segments. When the insertion force of the bolt is released, the spring member urges the shell segments together so that the internal threads of the shell assembly become engaged with the bolt, and the nut can be tightened on the bolt. The spring member may be a radial spring or O-ring, or in the alternatively may be a wave compression spring, segmented spring, circumferential or axial leaf springs, or a flexure spring formed integrally with the end retainer. The nut may also be configured with an external sleeve member for pulling the shell assembly back relative to the nut casing for quick disengagement from the fastener.

The invention includes a physical vapor deposition target composed of a face centered cubic unit cell metal or alloy and having a uniform grain size less than 30 microns, preferably less than 1 micron; and a uniform axial or planar <220> texture. Also described is a method for making sputtering targets. The method can comprise billet preparation; equal channel angular extrusion with a prescribed route and number of passes; and cross-rolling or forging subsequent to the equal channel angular extrusion.

A firearms magazine has compound tapered side walls and feed lips having substantially parallel end portions for maintaining contact with the cartridge as it is loaded. Removable inserts reduce the interior length and width to hold cartridges of different sizes. One insert has a channel along its height to protect the cartridge noses, and is held by a reinforcing member. A movable cartridge follower feeds the cartridges out of the magazine and has a pair of projections extending along its length for contacting and centering the last cartridge and a projection at one end slideable in the channel of the insert. The follower has one or more downwardly extending members to contact the floor or walls to maintain position of the follower with respect thereto. Projections extending inward from the side walls contact shoulders of the firearms cartridges in sliding relationship as they are fed out of the magazine.

A shielding apparatus useful in the attenuation of electronic noise or spurious electric signals is disclosed. In one embodiment, the shielding apparatus is encapsulated with an electronic component such as an integrated circuit. At least parts of the apparatus are formed using a selective metal deposition process (e.g., electroforming) that increases manufacturing efficiency and provides enhanced mechanical and structural features, as well as reduced cost. In another embodiment, the shielding apparatus comprises an array. Methods of manufacturing and utilizing the shielding apparatus are also disclosed.

A mobile apparatus includes an internal hands-free loudspeaker and a magnetic shielding plate that protects external objects sensitive to magnetic fields from the high-level magnetic field generated by the loudspeaker.

A linear actuator includes a housing formed of a first half shell and a second half shell and defining an accommodation chamber, a front opening in front of the accommodation chamber and a receiving chamber at the bottom side of the accommodation chamber, a driving mechanism having a push rod movably mounted in the accommodation chamber and extending out of the front opening, a motor mounted outside the accommodation chamber and a spindle coupled to and rotatable by the motor for causing the transmission shaft to reciprocate, and limit switches detachably mounted in the receiving chamber for stopping the motor upon movement of the transmission shaft to a front or rear limit position.

The invention discloses a construction method of a geogrid reinforced clay edge-covered tailing subgrade and belongs to the technical field of subgrades in the civil engineering. The construction method comprises the following steps: foundation treatment, sand gravel underlayer construction, laying of a two-way geogrid and water-permeable geotechnical cloth, feeding laying operations of clay edge-covering layers on the two sides of the subgrade and a tailing subgrade main body layer by layer, rolling construction, one-way geogrid construction between the tailing subgrade main body and the edge-covering clay to a designed elevation, and finally, the construction of an ash doped clay sealing layer. As the one-way geogrids are laid between the clay edge-covering layers on the two sides of the subgrade and the tailing subgrade main body, the defects such as differential settlement, poor subgrade stability and the like between the two fillers, namely the clay and the tailings, are reduced. The construction method has the advantages of simple structure, low cost and convenience for construction; besides, the consumption of the tailings and the overall stability of the subgrade can be increased, the differential settlement and the usage of the earthwork of the subgrade are reduced, rainfall infiltration and capillary water rise are decreased, and the internal drainage performance of the section of the subgrade is improved.

A hollow part is formed in a silicon substrate through the front and the back. A vibration electrode plate is arranged on an upper surface of the silicon substrate to cover the opening on the upper surface. A fixed electrode plate covers the upper side of the vibration electrode plate while maintaining a microscopic gap with the vibration electrode plate, where the peripheral part is fixed to the upper surface of the silicon substrate. The fixed electrode plate has the portion facing the upper surface of the silicon substrate through a space supported by a side wall portion arranged on an inner edge of the portion fixed to the upper surface of the silicon substrate without interposing a space. The outer surface of the side wall portion of the fixed electrode plate is covered by a reinforcement film made of metal such as Au, Cr, and Pt.

A bicycle frame is provided in which the head tube, top tube and down tube are constructed as a single structural unit with the ends of the top tube and down tube left open to allow for ease of molding.

The invention discloses a rapid injection technique to cavity among walls of compound shaft. The shaft is sectioned by injection in accordance with the frozen shaft depth, shaft wall thickness and strength and stratigraphic position of water-bearing bed, and the section has height of 100-200 m. When constructing inner layer shaft wall, pre-installing and pre-embedding a vertical sectioned injection pipe adaptable to the height of the injected section, a plurality of injection heads are equipped on the sectioned injection head and communicated with the cavity among walls of plastic interlayer, a plurality of injection points are formed at the same time at one section, the upper end of the sectioned injection pipe is connected with a delivery pipe, and the other end of the delivery pipe is connected with an injection pump via a connecting rubber pipe. The invention has the advantages of simple process, safe and reliable performance, high injection speed, high efficiency, and low cost. And, the occupied time of injection process to cavity among walls to the shaft construction is reduced by 60-90 percent, so as to shorten the shaft construction period.

A conductive substrate (18) and an etching substrate (20) are bonded to each other. An etch mask (25) is formed on the etching substrate (20) using a photolithography technique. On the etching substrate (20), grooves (20a) and X-ray transmitting sections (14b) are formed by dry etching using Bosch process. The grooves (20a) are filled with Au (27) by an electroplating method using the conductive substrate (18) as an electrode. Thus, X-ray absorbing sections (14a) are formed.

A leg fitness equipment includes two cranks respectively connected to both sides of a transmission shaft of a transmission wheel; each crank being inserted to a transmission bracket; each transmission bracket being pivoted to a pull rod; a pedal being provided to each pull rod; a terminal of each pull rod being pivoted to a guide pulley bracket containing a guide pulley or pulley; both guide pulleys or pulley striding over two sidetracks provided to both sides of a base of the fitness equipment; a user stepping on the pair of pedals to alternatively stamp thereon for both pull rods to slide back and forth on the guide track by means of the guide pulley; each pull rod follows the turning of the cranks at one end of the crank to be driven to its ascending and descending positions while reciprocally traveling by following expansion or reducing of the guide track; both pull rods drive the pair of pedals to produce oval turning; a reinforced section defined by a link between both terminals of two sidetracks to prevent the guide track from shaking and deformation due to torsion applied by the pair of pedals; and a user may stamp the pair of pedals in a position either facing or facing away from the transmission wheel of the fitness equipment to select travel motion in a toe-out or toe-in fashion in exercising stable simulation of roller / in-line skating, skiing, treading, walking, or twisting motion for achieving fitness purpose.

A method for making a low embodied energy cementitious mixture by blending a variety of post-consumer wastes, post-industrial wastes, as well as renewable, organic and recyclable materials with Portland cement or a material having similar cementitious properties. The primary materials are recycled concrete, coal-fired fly ash waste, silica fume, post-industrial waste, organic or inorganic waste fibers. Glass, brick, ceramics, ground tires and other waste products, as well as virgin aggregate can also be included in the low embodied energy cementitious mixture.

An engine cover 17 has a cover main body 19 and an engine hood 20 which is attached to an opening portion formed on an upper surface of the cover main body 19 and a plurality of reinforcing plates 24 are fixed to an inner surface of the engine hood 20. First to fourth reinforcing plates 24a to 24d of a plurality of reinforcing plates 24 define a space in an engine portion 14. An expansion chamber 26 which is communicated with an intake passage 23 reaching to an engine and resonant chambers 27, 28 which are communicated with the expansion chamber 26 via ports 29 are formed in the engine portion 14.

A retractable step assembly for a vehicle includes a track assembly mounted on a vehicle frame beneath a workbed, a step assembly, and a pivot assembly that engages the track and step assemblies together. The step assembly moves between a storage position where it is disposed between tracks of the track assembly, and an operational position where it extends outwardly from the tracks, through an aperture in the vehicle's wall panel, and angles downwardly toward the ground. A foldable handrail on the step assembly is selectively movable between a collapsed position and an extended position. The handrail is in the extended position when the step assembly is operational and folds to the collapsed position when the step assembly is stored. First and second supports are provided for the step assembly to rest upon when in either of the storage position and the operational position.

A light-emitting device (100) is provided with a metal part (2) atop a planar LED substrate (1), and an LED element (3) is disposed atop the metal part (2). A glass substrate (5) is provided to an upper surface of the LED element (3), and a wavelength conversion part (6) is formed on an upper surface of the glass substrate (5). The wavelength conversion part (6) comprises a light-transmissive ceramic layer formed by heating a mixture containing a phosphor, an organometallic compound, a layered silicate mineral, an inorganic particulate, an organic solvent, and water.

The invention relates to the field of electronic devices, in particular to a shell, a shell manufacturing method and an electronic device. The shell is provided with a metal connecting part, the metal connecting part is located in a gap and connected to shell parts, on the two sides of the gap, of the metal shell, the outer side face of the metal connecting part sinks relative to the outer side faces of shell parts on the two sides of the gap, the gap is filled with plastic tape, wherein the outer side face of the metal connecting part is covered with the plastic tape. According to the shell, the shell manufacturing method and the electronic device in the embodiment, as the metal connecting part and the plastic tape are combined, firm connection between the shell parts on the two sides of the gap is achieved, and the effect of enhancing the overall strength of the shell is achieved; the metal connecting part is concealed in the plastic tape, and the appearance of the shell is not influenced.

A method for converting a single-hull vessel to a double hull vessel, and the converted double hull vessel, is disclosed. The single hull vessel to be converted has an outer hull surrounding a center cargo tank flanked by a port wing tank and a starboard wing tank, with spaced-apart transverse bulkheads extending between the port and starboard wing tanks to form one or more central tanks. An elevated floor is added to the central cargo tanks by installing new bottom plating spanning the transverse bulkheads and the sidewalls of the wing tanks. Support members are added to increase the strength of the elevated floor, the cargo tank, and the wing tanks, as needed. A sealed compartment is formed by the new elevated floor, the outer hull, and the sidewalls and bulkheads to protect the cargo from leaking out of the vessel should the integrity of the single hull be breached. The method achieves conversion of the single hull vessel to a double hull construction without breaching the integrity of the pre-existing single outer hull, and thus is faster and easier in converting single hull vessels to minimize cost of conversion and vessel outage.

A method for fabricating composite light-weighted glass ceramics, suitable for use as, e.g. mirror blanks or microlithography stages, at low temperatures is disclosed. Component pieces are polished then joined at low temperature using a silicate-containing joining liquid. Assembly is then performed in such a way that the joining liquid forms an interface between each component. After a period of low or slightly elevated temperature curing, rigid joints are formed throughout and the composite is dimensionally, vibrationally, and temperature stable and can withstand tensile stresses >4000 psi. The room-temperature cured composite can be heat treated using a slow, systematic temperature increase to dehydrate the joints. A sealing coating may optionally be provided to prevent excess dried joining liquid from flaking off the formed joint.

The invention discloses a prestressed concrete solid square pile and a making method thereof, wherein the square pile comprises a steel reinforcement cage, four non-prestressed additional main reinforcements, a pile tip, a pile end mesh sheet and concrete, wherein the main reinforcements of the steel reinforcement cage use prestressed concrete steel rods; the steel reinforcement cage comprises an internal cage body and an external cage body; the external cage body is square; the internal cage body is in the form of a quadrangle with four arch edges; the internal cage body and the external cage body are respectively welded with each other through a stirrup in a spirally sliding way; the four non-prestressed additional main reinforcements use ordinary steel reinforcements and respectively positioned at four corners of the external cage body at the pile end; the pile end mesh sheet is put at the top end of the pile; and the steel reinforcement cage, the non-prestressed additional main reinforcements, the pile tip and the pile end mesh sheet are integrally cast by using high-strength concrete to form a whole solid square pile. According to the invention, as the pile main reinforcements use prestressed high-strength steel reinforcements, the stirrup is molded through mechanically rolling and welding high carbon steel wires and the pile tip and a pile body are connected and integrally cast, the integral strength of the pile can be enhanced, the cost of the connection between the pile tip and the pile body is reduced and the rock penetrating capacity of the square pile is enhanced.

In a semiconductor device, a thinly-molded portion covering a whole of a heat dissipating surface portion of a lead frame and a die pad space filled portion are integrally molded from a second mold resin, because of which adhesion between the thinly-molded portion and lead frame improves owing to the die pad space filled portion adhering to a side surface of the lead frame. Also, as the thinly-molded portion is partially thicker owing to the die pad space filled portion, strength of the thinly-molded portion increases, and a deficiency or cracking is unlikely to occur.

The invention discloses an energy-absorbing guide anti-collision device for a pier. The anti-collision device comprises a tubular pile group arranged beside the pier, wherein, an anti-collision buoyancy tank is sheathed outside the tubular pile group. The energy-absorbing guide anti-collision device for the pier has the advantages of simple structure, low cost and capability of absorbing energy during the collision process and guiding ship motion.

The invention relates to an easily-detached and conveniently-folded trolley dumper with high dumper strength made of the same material as a trolley handle bar and a trolley side beam. Dumper wheels are connected with a trolley frame chassis, a dumper hopper is positioned on the trolley frame and can be turned over. Side beams of two steel pipes of the trolley frame are bent and molded with the same steel pipe as the two handle bars of the trolley respectively. Both ends of a front steel pipe beam and a back steel pipe beam between the side beams of the two steel pipes of the trolley frame are welded with the side beams of the two steel pipes respectively, and both ends of a core beam of a steel pipe frame of the trolley are welded with the front steel pipe beam and the back steel pipe beam. The lower part of the front part of both sides of the dumper hopper is connected with the front steel pipe beam of the trolley frame through a connecting lug and can be rotated, and a hopper port of the dumper hopper is welded with a corner-shaped reinforced edge. The trolley dumper has the advantages that the integral strength of the trolley frame is high, and the stability is good; the trolley dumper can be disassembled, a plurality of dumper hoppers can be stored by folding so as to be convenient for transport and storage, and the transport cost and storage cost are low; and the peripheral corners of the hopper port of the dumper hopper cannot be shoved off, and the strength of carriage plates is reinforced.

A method for fabricating a ceramic article which includes providing a batch comprising components of (i) a mixture of inorganic raw materials comprising talc, alumina, and silica; (ii) a binder comprising a water-soluble organic binder and a fibrous silicate mineral having a high aspect ratio in combination with a large surface area; and (iii) a polar solvent; mixing the batch components to form a homogenous and plasticized mass; shaping the plasticized mass into a green body wherein the green body has improved strength; and, sintering the green body by heating to a temperature and for a time to initiate and sufficiently achieve conversion of the green body into a fired ceramic article.

The invention relates to an integrated regenerative fuel cell membrane electrode assembly and a preparation method of the integrated regenerative fuel cell membrane electrode assembly. The integrated regenerative fuel cell membrane electrode assembly comprises a specific combination of fuel cell oxygen reduction and water electrolysis double-effect catalytic agent. The integrated regenerative fuel cell membrane electrode assembly further comprises a special protection gasket, the special protection gasket is added in connection surfaces among a polyester frame, a gas diffusion layer and a proton exchange membrane in the process of hot pressing to protect the proton exchange membrane, so that the proton exchange membrane is prevented from being cut and damaged by the polyester frame and the gas diffusion layer in the process of ethylene-methyl acrylate (EMA) hot pressing, and therefore the reliability and durability of an integrated regenerative fuel cell membrane electrode are improved, and the performance of a uniform regeneration fuel cell (URFC) is improved.

The invention provides a high-temperature axial-flow type tail gas turbine which belongs to the field of energy recovery. The device adopts a structure form of axial air inlet and radial upward or downward exhaust and comprises an air inlet casing 1, a first stage guide vane 2, a second stage guide vane 3, a rotor 4, a transition casing 20, an exhaust casing 5, a bearing system 6 and a base 7. A moving vane adopts a vane shroud in a V-shaped structure, and a surrounding belt of the top of the moving vane is sealed by a honeycomb in an integral domain structure. The invention is suitable for tail gas with higher inlet pressure and low flowing quantity and the tail gas with solid particles, has higher efficiency, improves the heat insulation efficiency by 4% compared with the existing tail gas turbine products, and improves the sealing reliability of the moving vane and the surrounding belt of the top of the moving vane.