678 results about "Stress bearing" patented technology

A dental composite having high filler loading and low shrinkage thereby providing good strength and marginal integrity. Through the use of prepolymerized filler particles in combination with a structural filler and a nanofiller, the composite exhibits very low shrinkage and is useful in stress bearing restorations and in cosmetic restorations. The structural filler used is ground to a mean particle size of less than 0.5 μm and the nanofiller has discrete particles of a mean particle size less than 100 nm to improve handling and mechanical characteristics. The prepolymerized filler particles also allow for less viscosity and better handling characteristics of the composite.

The present invention provides a peelable seal for a multi-chambered container including a first edge and a second edge. At least one of the first edge or second edge includes a stress bearing portion and a non-stress bearing portion.

Provided is an electrically conductive elastic composite yarn having an elastic member that is surrounded by at least one conductive covering filament. The conductive covering filament has a length that is greater than the drafted length of the elastic member such that substantially all of an elongating stress imposed on the composite yarn is carried by the elastic member. The elastic composite yarn may further include an optional stress-bearing member surrounding the elastic member and the conductive covering filament.

A method and a system for filling or passing a fluid through irrigation pipes equipped with dripping emitters having a non-return valve. The irrigation pipes are connected at one end to a container with the fluid and at the other end to an operable vacuum source such as vacuum pump. The vacuum source is operated to create vacuum in the pipes to suck the fluid from the container to fill the pipes. The fluid may be passed through the pipes to the vacuum source and then returned to the container by another pipe, or may be retained in the pipes without flow, or may be subjected to pressure pulses. In all cases, the non-return valves are plugged under the vacuum so as to prevent entry of external air or water into the pipes through the dripping emitters. A non pressure-compensated dripping emitter with built-in non-return valve is provided as well.

The invention discloses a rock mass structural surface shear test method, which comprises the following steps of firstly, cutting a rock mass test piece into a cuboid and marking a vertical axis line and a horizontal axis line; then adjusting an adjusting rod, fixing the rock mass test piece by a movable steel baffle, enabling the vertical axis line of the rock mass test piece to coincide with the vertical axis line of a normal loading mechanism, enabling the horizontal axis line of the rock mass test piece to coincide with the horizontal axis line of a shear loading mechanism, and enabling the structural surface of the rock mass test piece to be located above the movable steel baffle; carrying out grading force application on the rock mass test piece by the normal loading mechanism from the vertical direction, and carrying out grading force application on the rock mass test piece by the shear loading mechanism from the horizontal direction; receiving the force application data of the normal loading mechanism and the shear loading mechanism and the displacement values of a normal displacement sensor and a horizontal displacement sensor by a computer, and analyzing and calculating the data. The invention also provides a rock mass structural surface shear test device. According to the invention, the stress bearing condition of a rock mass in the reality can be simulated, and test data are accurate and reliable.

A fluid-filled vibration damping device including: an elastic body connecting a first and a second mounting member, defining a pressure receiving chamber undergoing pressure fluctuation during input of vibration; an equilibrium chamber defined by a flexible layer for permitting its volume change; an orifice passage connecting the pressure receiving chamber and equilibrium chamber; a movable member; and a short passage for connecting two chambers with a length smaller than that of the orifice passage. When pressure in the pressure-receiving chamber increases, the movable member is displaced or deformed toward to close the equilibrium-chamber-side opening of the short passage to have the short passage substantially closed, while when pressure in the pressure-receiving chamber decreases, the movable member is displaced or deformed to have the short passage operative.

The invention relates to a method and a device for measuring solid interface contacted heat transfer coefficient based on a transient method. The method comprises the following steps: a lever loading device 2 is connected with a pressure turning joint 4, a centering ball 11, a low temperature sample connecting rod 6 and a low temperature sample 14 in turn from the top to the bottom; a positioning block bears pressure in advance; and a thread transmission shaft 20 pushes a high temperature sample 15 out of a heating furnace through a high temperature sample supporting rod 17, contacts and jacks up the low temperature sample 14 to transfer the pressure to the contact surface. A temperature control thermocouple 13 of the heating furnace is connected with a program control meter, the output end of the program control meter is connected in parallel and then is connected with an industrial computer 26 through an RS232 converter, a temperature detecting thermocouple 16 is connected with a preposition multi-path gate amplifier 23 and an A / D converter plate 25 in turn to acquire and process temperature signals of measured points in real time as well as compile a FORTRAN calculation module by applying a counter heat transfer arithmetic. The method has the advantages of high measuring temperature, quick acquisition and practical measuring principle, and is suitable for the research field of solid thermal processing.

A pneumatic radial ply tire (50) having a tread (52), a carcass (60) with two sidewalls (77, 78), two or more radial plies (70, 72), two annular beads (36a', 36b'), a belt structure (56) located radially between the tread and the radial ply structure (58), one or more circumferentially deployed high-modulus incompressible belt reinforcements (66) and / or two or more circumferentially deployed high-modulus tensile-stress-bearing fabric reinforcements (59). Belt reinforcement(s) (66) and / or fabric reinforcement(s) (59) work to increase the lateral and circumferential rigidity of the tread (52) and underlying structures of the carcass (60). The lateral and circumferential stiffening of the tread (52) enhances high-speed runflat handling and contributes to improved runflat operational life.

The invention discloses a steering device comprising an outer column held between a tensioning element (13) and a bracket (12) by an operating rod (L) to prevent movement of the fixed elements (16, 17) along the inclined groove (12a) (21), and the inner column (11) that is held relative to the bracket (12) by the outer column (21) to prevent the fixed elements (16, 17) from moving along the telescopic slot (11a), so in the direction of inclination and telescopic direction Secure the steering shaft (S). When the lever (L) is operated, since the bracket (12) applies pressure to the inner column (11) through the flange portion (21c, 21d) of the outer column (21), the inner column (11) is The approaching direction is subjected to pressure in the opposite direction, and since the rigidity of the pair of brackets (12) is substantially equal, the center of the inner column (11) can be substantially held at a constant position, and thus the steering shaft (S) Axis misalignment can be suppressed.

A fluid-filled vibration damping device including: an elastic body connecting a first and a second mounting member, defining a pressure receiving chamber undergoing pressure fluctuation during input of vibration; an equilibrium chamber defined by a flexible layer for permitting its volume change; a first orifice passage connecting the pressure receiving chamber and equilibrium chamber; a medial chamber disposed between the pressure receiving chamber and equilibrium chamber; a second orifice connecting the pressure receiving and medial chambers, being tuned to a frequency higher than does the first orifice passage; a pressure fluctuation transmitting mechanism disposed between the pressure receiving and medial chambers for a restricted pressure transmission between chambers by restrictive displacement of its movable member; and a pressure regulating rubber plate defining the medial chamber, regulating pressure fluctuation in the medial chamber by its elastic deformation.

The invention relates to the field of development of hydrogen energy source storage equipment, and aims to provide a fixed type multi-layered vacuum heat-insulating high-pressure liquid hydrogen storage tank. The liquid hydrogen storage tank comprises an inner tank and an outer tank; a fiber enhanced epoxy resin based composite material layer covers the outer shell of the inner tank and is fixed in a chamber body of the outer tank by a supporting part; the inner tank and the outer tank are of vacuum heat-insulating interlayers; multiple vacuum radiation-prevention heat insulating layers covering the whole inner tank are paved in the vacuum heat-insulating interlayers; a vacuumizing device and a vacuum meter which communicate with the vacuum heat-insulating interlayers are arranged on the outer tank. By comprehensively considering two factors of the temperature and the pressure in a hydrogen phase chart, the used fiber-wound aluminum inner container can bear the pressure, and the hydrogen storage density is improved more, the waste is avoided and an overpressure condition is also prevented, and the safety of the structure is ensured. The fixed type multi-layered vacuum heat-insulating high-pressure liquid hydrogen storage tank is suitable for liquid hydrogen filling stations and gas-state hydrogen filling stations.

The invention relates to the technical field of communications and discloses a touch pressure detection apparatus. The pressure detection apparatus comprises a stressed plate, a sensor film and a stress bearing plate located between the stressed plate and the sensor film, wherein force coupling is realized between the stressed plate and the stress bearing plate; force coupling is realized between the stress bearing plate and the sensor film; a plurality of sensor units are distributed in array on the sensor film; each sensor unit comprises a first resistor, a second resistor, a third resistor and a fourth resistor; the four resistors match to form a Whist electric bridge; the first resistor is connected in series with the third resistor; the second resistor is connected in series with the fourth resistor; two serial circuits are connected in parallel; the stress bearing plate is provided with an opening that runs through the thickness of the stress bearing plate; and in each sensor unit, the second resistor and the third resistor correspond to regions in the opening of the stress bearing plate, and the first resistor and the fourth resistor correspond to regions outside the opening of the stress bearing plate. The pressure detection apparatus is improved in both sensitivity and accuracy.

Disclosed is a large-span truss hydraulic multi-point synchronous lifting construction method. The construction method includes the steps of lifting point selection, calculation of load power of each lifting point position, upper and lower anchor point arrangement of a truss, lifting device selection, calculation of overall lifting conditions, lifting trial and steel truss lifting. Deformation caused by truss lifting can be reduced by adopting the flexible steel strand hydraulic synchronous lifting technology, reasonably selecting lifting point positions and utilizing an original structure to serve as upper and lower anchor points for lifting as much as possible; after assembled on the ground, components are integrally lifted to a preset position to be assembled in place; the large-span components can be synchronously integrally lifted at ultra-high altitude, high-altitude operating quantity can be reduced, quality can be improved, workload can be reduced, labor is saved, convenience in mounting and demounting is achieved, stress bearing is unaffected, cost is lowered, funds are saved, duration of work is shortened, and difficulty of safety protection is remarkably reduced.

A fluid filled type vibration damping device including: a partition member having a communication passage connecting a pressure receiving and equilibrium chambers; an obstructing rubber elastic plate juxtaposed against the communication passage from an equilibrium chamber side, adapted to obstruct the communication passage, and arranged to be exposed to pressure of the pressure receiving and the equilibrium chamber at both faces; and a constraining member provided for retaining an outer peripheral section of the obstructing rubber elastic plate in contact against the partition member at multiple locations. The constraining member provides an opening / closing control member operated to induce the obstructing rubber elastic plate to push against the partition member and close off the communication passage, and to induce elastic deformation of the obstructing rubber elastic plate to be separated from the partition member.

Energy active composite yarns include at least one textile fiber member of either an elastic or inelastic material, and at least one functional substantially planar filament, which surrounds or covers the textile fiber member. The composite yarns can include an optional stress-bearing member, which also surrounds or covers the textile fiber member. The composite yarns may be multifunctional, meaning the functional substantially planar filament can exhibit combinations of electrical, optical, magnetic, mechanical, chemical, semiconductive, and / or thermal energy properties.

The novel invention discloses a cage-type spring which has the advantages of simple structure, small volume, high carrying capacity and low manufacturing cost. The cage-type spring is composed of one or multiple sections of spring groups, wherein each spring group comprises multiple elastic sheets which are arranged surrounding a centre line; and the two ends of each elastic sheet are respectively fixed on an upper connecting ring and a low connecting ring, and the elastic sheets are bent inward or outward relative to the centre line. The spring provided by the invention is composed of one or multiple sections of spring groups, and each spring group is composed of the multiple elastic sheets which surround the centre line and are in cage-shaped arrangement, when the spring is subjected to the pressure, the elastic sheets are bent inwards or outwards under the action of pressure, the multiple elastic sheets share the pressure together and are uniformly stressed, and the compaction state is stable. Compared with the traditional single spring wire spiral spring, the cage-type spring provided by the invention has the following advantages: under the conditions that the cage-type spring is made of a same material and the diameter of a spring wire is equal to that of each elastic sheet, the load born by the cage-type spring composed of eight elastic sheets is eight times that of the spiral spring, the volume of the cage-type spring is smaller and the cage-type spring is more simple and more convenient in use.

A combined pile embedded in rock is constructed through prefabricating reinforced concrete pipe or other pile with reinforcing bars used as the load bearing member in soil layer, embedding the reinforced concrete member or steel member with reinforcing bars in the drilled hole in rock, and grouting in-situ. At least one group of reinforcing bars passes through said member and cast inside it for bearing pressure or pull and improving the integrity of whole pile. Its advantages are high load-bearing power, simple structure and low cost.

A divided wall exchange column includes a dividing wall strengthened by stiffening members and / or a double wall design to better withstand pressure differentials and minimize temperature differentials. When a double wall is used, cost of manufacture and installation is minimized by reducing the manufacturing tolerances required while providing a design robust in construction, installation, and operation. When structured packing is used, the stiffening members, combined with positioning the layers of packing at preferred angles relative to the dividing wall, result in minimal interference with the heat and / or mass transfer process while minimizing the complexity of manufacture and construction of the packing. Further, by positioning the top layer of structured packing at other preferred angles relative to the dividing wall, a simplified liquid distributor design may be used in the divided wall exchange column while the layers below may still be orientated as described above with all the associated benefits.

The invention discloses a transparent conducting film and a writing-resistance high-penetrability resistance-type touching control panel using the same. The transparent conducting film comprises a first substrate material, a first hardening treatment layer which is arranged on the first substrate material, a colloid which is used for bonding one side of an unhardened layer of the first substrate material and a second substrate material, a first dielectric layer which is arranged on the other side of the second substrate material and has an optical refractive index of n1, a second dielectric layer which is arranged under the first dielectric layer and has an optical refractive index of n2, and a first conducting layer which is arranged under the second dielectric layer and has a refractive index of n3, wherein the refractive indexes of the film layer materials satisfy the equation that n3 is more than n2 and less than or equal to n1 as well as a film stack structure of substrate-high refractive index-low refractive index-high refractive index; and the film layer materials can form an antireflection film layer to improve the optical permeability of the transparent conducting film in a range of visible light. The transparent conducting film adopting a multilayer structure allows the conducting layer in the transparent conducting film to increase the allowable external stress bearing capacity effectively and improves the structural strength and writing resistance of the touching control panel.

The invention provides a method for measuring vector pressure by using capacitance change and the device. In the invention pressure sensors of changeable capacitance are set under forced flat plate and each pressure sensors of changeable capacitance is connected with a circuit cell. By measuring capacitance change and frequency change of oscillation circuit changes of action point of bearing pressure of forced flat plate and pressure size are calculated. The method adopted by the invention is that capacitance values at different positions are obtained firstly; then by oscillation circuit electric signal with certain frequency range is obtained; and then vector difference between directions is calculated to obtain forced point corresponding to the forced flat plate and forced status information. The circuit cell mainly comprises oscillation circuit cell, amplifying and shaping circuit cell, frequency counting cell, vector calculating cell and outputting data cell. The invention is provided with simple structure. It can calculate pressure change and inspect the position of forced point quickly. It can emend it by itself. It is applied in multiple fields.

A safety breakaway connector begins with a body that receives a cooperating insert providing a coaxial flow path. The body has threads, a collar leading to an extension, and a hollow interior. The insert also has threads, a collar that leads to an inner wall, and a hollow interior. The inner wall fits snugly within the extension of the body. Generally, the insert simply slides into and interconnects with the body for quick installation. Two spaced apart biased check valves remain slightly outwardly from the narrow portions of the body and insert. A guard covers the body. Upon the application of the minimum force, the insert separates from the body, and the check valves abruptly close preventing further leakage of fuel. Alternatively, a strategically located O-ring or gasket seals the various components and withstands pressure variations.

The invention discloses a composite fiber detection module comprising a substrate having a stress bearing surface, wherein a fiber structure I, a fiber structure II and a fiber structure III which are parallel up and down are arranged on the stress bearing surface; the fiber structure I is of a tubular structure and used for great measuring range measurement of shear force; the fiber structure II is of a single fiber structure and used for initial high-accuracy survey of the shear force; and the fiber structure III is of an embedded type structure and used for direction judgment. Through arranging three different fiber structures on the stress bearing surface of the same substrate, the composite fiber detection module can realize the great measuring range and initiall high-accuracy survey measurement and the direction judgment and obtain accurate and comprehensive information. During actual use, a plurality of composite fiber detection modules can be mutually connected to form a three-dimensional structure or extend along the same direction plane, thereby greatly improving the flexibility of the application of the module. In addition, the invention also discloses a composite fiber detection device.

The present invention provides a peelable seal for a multi-chambered container including a first edge and a second edge. At least one of the first edge or second edge includes a stress bearing portion and a non-stress bearing portion.

The invention is concerned with a tiny-hole ceramic filter with ultrasonic clean setting, relating to ultrasonic power, filter shell enduring press, tiny-hole ceramic filter inside of the shell and ultrasonic oscillator setting on the shell. This filter is fit for some kinds of liquid, such as water, alcohol, beverage, machine tool cooling fluid and air, and it will remove the bacteria and other grain impurity of the liquid to enhance the purity. It has high filtration precision, large filtration area, small filtration resistance, cleaning and filtrating together when filtrate is a jam (continuous filtration), small damage during cleaning (long work time), few liquid when cleaning, full resumed filtration amount and simple operation.

The invention discloses an aerial tube-shaped carbon fiber composite rod piece and a manufacturing method thereof. The rod piece is a tube-shaped structure made from a composite material formed by mixing and weaving high-modulus and low-modulus fibers, wherein the fiber weaving manner is longitudinal arrangement in bearing direction and transverse reinforcement in nonbearing direction. The rod piece comprises two bearing components and metal shaft sleeves, wherein the two bearing components are arranged fixedly, closely adjacently and side by side; the two ends of each bearing component are respectively provided with an ear part; the metal shaft sleeves are embedded in the ear parts; the metal shaft sleeves are in shape of a water drop. According to the rod piece disclosed by the invention, the water-drop-shaped metal shaft sleeves are beneficial to tensile loading and also beneficial to compression-resistance unloading, so that a pull rod can greatly uniformly distribute the load on the carbon fiber composite material when bearing the pressure. The manufacturing method disclosed by the invention is simple and convenient, the provided rod piece has the characteristics of resistance to high-altitude low temperature of -55 DEG C, resistance to ground high temperature of 45 DEG C, resistance to huge tension / pressure of 100 tons, vibration resistance, large torque resistance, no deformation, ultra high rigidity and strength, light dead weight and the like, and the provided rod piece can be taken as key bearing parts on spacecrafts.

A fluid-filled vibration damping device including: an elastic body connecting a first and a second mounting member, defining a pressure receiving chamber undergoing pressure fluctuation during input of vibration; an equilibrium chamber defined by a flexible layer for permitting its volume change; a first orifice passage connecting the pressure receiving chamber and equilibrium chamber; a medial chamber disposed between the pressure receiving chamber and equilibrium chamber; a second orifice connecting the pressure receiving and medial chambers, being tuned to a frequency higher than does the first orifice passage; a pressure fluctuation transmitting mechanism disposed between the pressure receiving and medial chambers for a restricted pressure transmission between chambers by restrictive displacement of its movable member; and a pressure regulating rubber plate defining the medial chamber, regulating pressure fluctuation in the medial chamber by its elastic deformation.