102results about How to "Rigid and stable" patented technology

A universal joint apparatus comprises clamps, a locking mechanism, and a rod connecting the clamps and the locking mechanism. At least one clamp is a scissors clamp, i.e. a clamp comprising two segments fastened by a pivot. The scissors clamp generates extra compressive force on the object being held, providing a stable and rigid universal joint. Clamps are able to rotate with respect to each other, allowing for greater flexibility in usage. The universal joint apparatus is capable of being added to a support frame between other components. In one embodiment of the invention, the universal joint includes a dedicated retractor blade handle to ensure that the locked position of the cam handle is oriented substantially away from the operative site.

Devices, tools and methods for minimally invasive implantation of a dynamic interspinous implant device for distracting between spinous processes and providing dynamic stabilization. One exemplary device includes a main body including a shaft having a longitudinal axis; a first clamping mechanism having first and second jaws configured to clamp a spinous process of a first vertebra, and a second clamping mechanism having third and fourth jaws configured to clamp a spinous process of a second vertebra. The first, second, third and fourth jaws extend transversely from the shaft and at least two of two of the jaws are releasably mounted to the shaft and are mountable to and removable from the shaft by relative movement between the respective jaw and the shaft in a direction normal to a longitudinal axis of the shaft. The shaft has sufficient columnar strength to maintain distraction between the first and second vertebrae via the clamps, while also allowing at least one of the relative movements between the first and second vertebrae selected from the movements including lateral bending, flexion, extension and axial rotation.

An energy-absorbing hood assembly for a vehicle includes upper and lower layers and a middle panel. The upper and lower layers have first and second interface surfaces, respectively. The middle panel has opposing first and second surfaces defining a corrugated profile having a plurality of bonding surfaces, the bonding surfaces being attached to the first and second interface surfaces to thereby define a plurality of laterally oriented channels. The corrugated profile further defines a height and wavelength along a substantial portion of the hood assembly, each being configured to be variably tunable to provide different predetermined levels of absorption and attenuation of kinetic energy imparted to the hood assembly by objects upon impact therebetween. Preferably, the hood assembly also includes an upper hood panel having an inner surface secured to the upper layer. Ideally, the corrugated profile is a trapezoidal waveform profile.

The invention discloses a tunnel model test device for global observation of surrounding rock deformation and fracture. The tunnel model test device includes a model test box and a loading device for simulating pressure application to a soil layer; the model test box comprises a bottom wall, a peripheral side wall fixedly connected with the bottom wall in a detachable manner, and an observation assembly used for observing the interior of the model test box; the observation assembly is arranged on the side wall; the loading device includes a loading frame, a force applying mechanism and a force measuring mechanism; the model test box is located in the loading frame; and the force applying mechanism and the force measuring mechanism are arranged at the upper part of the loading frame. The tunnel model test device of the invention is simple and convenient to assemble. The size of the model test device can be adjusted according to different research objects. With the tunnel model test device adopted, change and influence in various aspects, of a tunnel surrounding rock support and protection system can be reflected more truly, comprehensively, intuitively and accurately, and therefore, the interaction mechanism of a tunnel surrounding rock support and protection structure can be better learned, and the mechanical properties of tunnel surrounding rock can be understood more deeply.

The invention discloses a septic tank special material with good processing fluidity. The septic tank special material is prepared from the following components in parts by weight: 100 parts of HDPE (high-density polyethylene); 5 to 20 parts of calcium carbonate; 1 to 10 parts of PP (propene polymer); 1 to 5 parts of naphthenic oil; 0.5 to 2 parts of zinc stearate. The invention also discloses a preparation method of the septic tank special material. The preparation method comprises the following steps: S1, mixing the HDPT, the calcium carbonate, the PP, the naphthenic oil, the zinc stearate and the SEBS, softening and fusing; S2, smashing an anti-bio agent and spraying on LLDPE (linear low density polyethylene) flux, and cooling to room temperature, so as to obtain an anti-bio microcapsule; S3, adding the anti-bio capsule obtained in S2 into the fusant of S1, and performing injection molding.

The invention discloses a solospun device of a ring spinner in the textile industry, which comprises a fixation clamp which is buckled on a front leather roll shaft of the ring spinner by a hook, and a partition wheel which is arranged at both sides of the fixation clamp and connected with a swing bearing. A shaft of the swing bearing is sheathed with a spring used for adjusting the tensile force of the swing bearing and the partition wheel closely fits to a front roller of the ring spinner and rotates with the rotation of the front roller by the action of a friction force. The fixation clamp is also fixed above a jaw of the front leather roll shaft by a locating screw and fixedly held on the front leather roll shaft by a holding screw to form a three-point fix. The surface of the partition wheel is provided with a partition groove with deep and shallow sections as well as wide and narrow sections which are alternated with each other and a transition section vertical to the partition groove while the transition section is a groove of which the bottom is flush to the bottom of the deep section of the partition groove. The solospun device has the advantages that the fixation clamp of the solospun device has stable rigidity, no frictional loss occurs between the fixation clamp and machine parts of the ring spinner, the partition wheel has reliable operation and the fiber can be prevented from accidental damages.

Provided is a sintered metal bearing formed from a starting material power of which a copper based powder and an iron based powder are principal components, and having a radial bearing surface on the inside periphery, wherein the copper based powder used is one in which an ultrafine copper powder of a particle size distribution in which the proportion of particles less than 45 µm in diameter is 80 wt% or more constitutes one-third or more, expressed as ratio by weight, of the total copper based powder; and the compact obtained by compaction molding of the starting material power is sintered at 900ºC to 1000ºC inclusive.

The invention belongs to the field of organic materials, and relates to an arylamine compound, an electronic element using the arylamine compound, and an electronic device, wherein the arylamine compound has a structure represented by the following formula 1. According to the invention, the arylamine compound is used as a hole transport material to be applied to an OLED device, so that good deviceperformance and low voltage can be obtained.

The invention discloses a bicycle completely prepared from a basalt-fiber-reinforced resin-based composite. Such components of the bicycle as a handlebar, a front fork, a vehicle frame, wheel hubs, a crank and pedals are prepared from the basalt-fiber-reinforced resin-based composite. The basalt-fiber-reinforced resin-based composite is mainly prepared from the following raw materials by weight: 70 to 75 parts of basalt fiber, 25 to 30 parts of resin, 0.5 to 15 parts of a curing agent, 0.25 to 3 parts of a mold lubricant and 0.125 to 3 parts of a promoter. According to the invention, the basalt fiber used in the invention is much lower in price compared with carbon fiber, so the cost for the bicycle is reduced; basalt fiber materials of different forms and resin are used for different components of the bicycle, so the mechanical properties of each component of the bicycle is maximally improved; a preparation method provided by the invention enables the content of the fiber to be increased to 60 to 70%, so product performance is greatly improved and product weight is low; and the preparation method is rapid in molding and saves cost.

Aluminum filled via disks are manufactured utilizing a plurality of drilled substrates placed into a metal can in a stacked, interdisposed assembly with a corresponding number of graphite molds. Aluminum infiltration ingots are added and the can is heated to a temperature to melt the ingots. The molten aluminum is pressurized so that it flows into the vias. The substrates are then cooled, removed from the can, separated from between the graphite molds, and the flat surface faces are ground and polished to expose the filled vias.

The invention belongs to the technical field of resin diamond wire saw production, and specifically relates to a method for surface treatment of diamond micropowder. The steps are as follows: take alcohol, silane coupling agent and pure water respectively according to the mass ratio of 3-8:1-3:1-3 and mixed, stirred at room temperature for 2-6 hours to obtain a treatment solution; the resulting treatment solution was mixed with the diamond micropowder in a mass ratio of 1 to 5:1, and stirred at 40-80°C for 2-6 hours; the stirred The speed is 800 rpm. The invention performs simple and high-efficiency surface treatment on the diamond micropowder to improve the bonding strength between the resin adhesive and the diamond micropowder.

The invention relates to a polyolefin composition, particularly to a thermo-oxidative-aging-resistant impact-resistant polypropylene composition and a preparation method thereof. The composition comprises the following raw materials: 88 to 97 parts of a polypropylene powder resin, 3 to 12 parts of metallocene linear low density polyethylene mLLDPE, 0.05 to 0.1 part of an antioxidant A, 0.05 to 0.1part of an antioxidant B, 0.03 to 0.07 part of a degradation agent, 0.02 to 0.08 part of an antistatic agent, and 0.02 to 0.1 part of an acid absorption agent, wherein the sum of the polypropylene powder resin and the metallocene linear low density polyethylene mLLDPE is 100 parts, the antioxidant A is mercaptan acrylate and has the number-average molecular weight of 1305, and the antioxidant B is tri(2,4-di-tert-butylphenyl) phosphite, and has the number-average molecular weight of 647. The preparation method comprises the following steps: uniformly mixing the raw materials, and carrying outtwin-screw extrusion granulation to obtain the polypropylene composition with good heat resistance, good impact resistance and good flowability.

The invention discloses a water expansion forming process for vehicle universal joints. The process is characterized by comprising the following steps: (1) raw materials-carbon steel pipes are cut asneeded sizes; and burrs at two ends are removed; (2) the carbon steel pipes are annealed at a temperature of 450-600 DEG C to reach the surface hardness HRB of 30-40; (3) the carbon steel pipes are put in a water expansion mold; the mold is tightly pressed by a water expansion machine; meanwhile, booster cylinders at two ends are pushed into punches; saponification liquid with pressure of 16 MPa is injected for primary water expansion formation; the water expansion forming parameters are as follows: the water expansion machine applies the pressure of 120 tonnages to a main cylinder; the pressure is lower than 24 MPa; the output pressure is higher than 18 MPa; the output water pressure of left and right side cylinders is 20-28 MPa; the displacements of the left and right punches are 43 mm;the water cylinder capacity is higher than 1.5 L; and the water supply pressure is lower than 4 MPa; and (4) semi-finished products are annealed again after water expansion by the procedures; the annealing temperature is 450-600 DEG C; and the hardness HRB is 34-36.

The invention discloses a high-stability battledore frame and a manufacturing process thereof. The manufacturing process comprises the following steps: 1) preparing raw materials; 2) coiling a battledore frame; 3) fixing; 4) molding. By reducing the FAW, the battledore frame is manufactured through coiling according to an overlapped symmetric increase method, symmetric distribution of overlapped layers is improved, coils of the battledore frame can be effectively increased, the wall thickness of the cross section of the battledore frame can be reduced, the weight distribution uniformity consistence of the cross section of the battledore frame can be improved, and the battledore frame has stable rigidity, high strength and good playing performance.