150 results about "Mechanical tension" patented technology

Provided herein are masonry structures, including walls, which are disposed upon a footing having a re-bar disposed longitudinally therethrough. The masonry structures of the invention include vertical bores disposed along their lengths, and include tensioned cables which extend through a first vertical bore, are spirally wound about the re-bar, and also extend through a second vertical bore such that the end portions are rigidly anchored in position near the top course of masonry units used in constructing the structures, and wherein the tensioned cables are under a relatively high mechanical tension. By staggering a plurality of tensioning cables, structures comprising a plurality of masonry units of enhanced structural stability over structures of prior art are provided.

A rotary printing press is provided. The rotary printing press includes a continuous printing web of material to be printed, at least one printing unit for printing on the printing web, and a cutting device for cutting the web printed by the printing unit. The rotary printing press further includes a traction device located downstream of the furthest downstream printing unit and upstream of the cutting device. The traction device is for applying a predetermined mechanical tension to the printed web discharged from the furthest downstream printing unit and the printing web is a coated paper web. A method for printing is also provided.

Electromechanical lock and its operation method. The lock includes a power transmission mechanism to receive mechanical power produced by a user of the lock; a generator to produce electric power from the mechanical power; an electronic circuit, powered by the electric power, coupleable with a key, to read data from the key, and to issue an open command provided that the data matches a predetermined criterion; an actuator, powered by the electric power, to receive the open command, and to set the lock in a mechanically openable state; and a threshold device to control the power transmission mechanism so that a mechanical tension rises until a predetermined force threshold is exceeded, whereupon the mechanical tension transforms to an action producing the mechanical power received by the power transmission mechanism.

The invention provides a strain clamp for JRLX/T carbon fiber leads, relates to a strain clamp for connecting, fixing and tensioning the JRLX/T (ACCC) carbon fiber leads on a pole tower in an overhead electric transmission and transformation circuit, is classified in H02G7/02, and relates to electric power fittings arranged in the electric transmission and transformation circuit, namely the technical field of devices for adjusting and keeping mechanical tension. The strain clamp comprises an internal thread pull anchor, a sleeve, an inner-cone external thread core sleeve, an outer-cone elastic clamp core, a bush, and the like. The strain clamp is mainly characterized in that the internal thread pull anchor is connected with the inner-cone external thread core sleeve the middle of which the outer-cone elastic clamp core passes through, a lead composite core passes through the interior of the outer-cone elastic clamp core, the outer-cone elastic clamp core is automatically clamped with the inner-cone external thread core sleeve through a radial acting force to lock the lead composite core, and the JRLX/T (ACCC) carbon fiber leads are connected and fixed on the pole tower through hydraulic pressure and the like. The strain clamp has the advantages of novel structure, good guide performance, strong stability, stable holding power, low cost, convenience for mounting and constructing, low labor intensity, and the like.

The invention discloses a cell suspension culture tank and its usage. Compared with current flat base biological tank, it is characterized by wide- bodied culture tank, converse flat conical bottom, larger culture medium area, benefit for oxygen absorption and carbon dioxide discharge, reduced cell inoculation volume, much lower level of air injection, prolonged air bubble course, regular agitation that makes culture medium contacts with tank wall, and generates small cutting force and mechanical force, and benefit for surface area enlargement, air aeration amount and improved mixing. The disposal plastic or glass shake flask suspension culture system using no complicate control tower and relevant probe, is developed by using design in this invention. The invention aslo relates to large- size industrial biological reactor which is drove by stirring paddle.

The invention relates to so-called panel loudspeakers (11) working according to the multiresonance principle. Said loudspeakers are generally formed by a core layer (13) and at least one outer layer (14.o, 14.u). The outer layers (14.o, 14.u) are connected to the core layer (13). A periphery is also provided (12) enclosing the panel loudspeaker (11) at a lateral distance (A). The panel loudspeaker is connected to the periphery (12) by means of connecting elements (17, 17′). Although good reproduction results can be obtained in the mid and high audio frequencies with the panel loudspeakers (11) described above, undesired large panel surfaces are known to be required for good low frequency reproduction. When such panel surfaces are not used, the lowest panel resonances ensuring bass reproduction are shifted towards the midfrequencies. Hence, the invention aims at providing a panel loudspeaker (11) exhibiting improved acoustic reproduction in the low frequency range despite a relatively smaller panel surface. According to the invention, this is achieved in that the connecting elements (17 17′) are subjected to mechanical tension when they are connected to the periphery (12) resulting in supplementary particularly low frequency drum resonances in addition to the existing low frequency panel resonances, which can be modulated by the tension in the connecting elements (17, 17′).

A fast automated gear shift operation is performed using a powertrain in a hybrid vehicle, the powertrain including a gear box, an engine, at least one controllable motor, a torque ripple damping device, a mechanical connecting device for connecting or disconnecting the engine to or from, respectively, wheels of the vehicle. In the gear shift operation the motor is controlled to perform a sequence of steps in which different torques are delivered by the motor to temporarily change the speed thereof. The torques are selected so that they reduce the mechanical tension over at least one elastic part of the powertrain. Hence it can be achieved, that during at least a period during the gear shift operation torques over mechanical elements in the gear box cooperating in the current gear and/or over the mechanical connecting device are eliminated or at least strongly reduced. The period should be sufficiently long so as to permit disconnection of said mechanical elements cooperating for the present gear and/or to permit disconnection of the mechanical connection device.

A sensor for measuring mechanical changes in length, in particular a compressive and/or tensile stress sensor, includes a sandwich system with two flat and superposed electrodes separated from each other by a tunnel element (tunnel barrier), in particular an oxide barrier, a current being set up between the electrodes and through the tunnel barrier, one electrode consisting of a magnetostrictive layer 3 which responds to elongation, and wherein the contributions of the anisotropies caused by mechanical tension are larger than those from the intrinsic anisotropies, relative changes in system resistance ΔR/R larger than 10% at room temperature being attained during elongation.

The invention relates to the technical field of mechanical property tests, and discloses a horizontal push-pull force tester. The horizontal push-pull force tester comprises a fine tuning module, a tensiometer, a coarse tuning module, a base, precise guide rails and a transitional plate, wherein the fine tuning module comprises a tension fine tuning handle wheel, a lead screw and a lead screw seat; the forwarding or retracting of the lead screw is controlled by the forward and reverse rotation of the tension fine tuning handle wheel; the other end of the lead screw is contacted with the precise guide rails fixedly provided with the tensiometer and the transitional plate; and the accurate position of the transitional plate on the precise guide rails can be controlled. The coarse tuning module comprises a winding wheel, a winding handle, a ratchet wheel and a bearing seat; and the winding handle controls the ratchet wheel to rotate only toward one direction by the bearing seat and generate stepping. The horizontal push-pull force tester can carry out detection of mechanical tension or thrust on a single product, and has the advantages that the testing value is accurate, the error is less and the occupied space is less. In addition, by applying the fine tuning function of the horizontal push-pull force tester, the tension can be increased at constant speed, and the product is prevented from being damaged after being impacted by sudden force in the testing process.

The invention relates to a multifunctional mechanical tension and compression fatigue loading device and method. The multifunctional mechanical tension and compression fatigue loading device comprises a power source main shaft, a test piece loading connecting member, a dual eccentric wheel mechanism, a tension piece and an elastic tension and compression connecting rod mechanism, wherein the elastic tension and compression connecting rod mechanism comprises a pressure connecting rod, an elastic element, a counter-force casing and dual loading inserting lugs. The method comprises the following steps of: rotating a secondary eccentric wheel; adjusting the position of an eccentric shaft of the secondary eccentric wheel according to the requirement and then locking the secondary eccentric wheel with a main eccentric wheel; starting a power source; sequentially adjusting the expansion amount of the elastic element through the main eccentric wheel, the secondary eccentric wheel, the tension piece and the pressure connecting rod; and rotationally adjusting nuts and further tuning the expansion mount of the elastic element to meet the loading requirement of the test piece. According to the multifunctional mechanical tension and compression fatigue loading device and method disclosed by the invention, the load error caused by wear of a structural element and mechanical clearance can be greatly reduced and the higher-precision repeated fatigue loading of the structural element is realized.

The invention discloses a mechanical tension adjusting device for a cable. The mechanical tension adjusting device comprises a supporting plate and supporting legs which are fixed at two sides of the bottom surface of the supporting plate, wherein one group of the supporting legs is internally provided with through hole structures and one group of fixed limiting plates is fixed at the inner sides, located on the through hole structures, of the corresponding supporting legs; cable groove structures are formed in upper surfaces of the fixed limiting plates; one group of hollow shell bodies is fixed at parts, located on the group of the supporting legs, of the supporting plate; one group of electromagnetic controllers is fixed on the outer surfaces of the hollow shell bodies; the inner parts of the hollow shell bodies are of a hollow structure; and one group of iron cores, which are externally wound with coils, is fixed at the tops, located in the hollow structures, of the hollow shell bodies. According to the mechanical tension adjusting device for the cable, the thickness of the cable is adjusted to enable the fineness degree to be uniform as much as possible, and tension of the cable is changed through a lengthening effect, so that the tension of the cable is uniform; and furthermore, the device for changing the cable is electromagnetic and has controllability.

An improved method for controlling electrically operated weft-braking devices, capable of automatically adjusting the mechanical tension of the weft yarn (F) in mechanical-picking weaving machines (TE), is disclosed herein. The excitation current (Ie) of the weft-braking device (LF) is controlled by an adjustment loop (A) using a signal (tens-mis), which is a measure of the actual tension of the yarn, as a feedback signal for the adjustment loop (A). The improvement comprises employing an average value (TMx), which is computed at predetermined intervals (x) of weft picking and for a predetermined number (i) of picking strokes, in order to measure the direct tension of the thread (F), so that said average value (TMx) is substantially stable and not affected by fluctuations due to variations of the parameters of the weaving process.

The length of the optical fiber section under tension expands by a certain amount that is proportional to the level of tension applied to it. Monitoring the variations in the phase of the arriving signal allows to discover a fiber that is subject to a certain level of mechanical tension. With the method and apparatus according to the present invention it is possible to protect optical communication channels against failures in an optical transmission fiber that are caused by any kind of mechanical disturbances.

A CMOS device comprising a FinFET comprises at least one fin structure comprising a source region; a drain region; and a channel region comprising silicon separating the source region from the drain region. The FinFET further comprises a gate region over the source region and the drain region and partitioning the fin structure into a first side and a second side, wherein the channel region is in mechanical compression on the first side and in mechanical tension on the second side. The FinFET may comprise any of a nFET and a pFET, wherein the nFET comprises a N-channel inversion region in the second side, and wherein the pFET comprises a P-channel inversion region in the second side. The CMOS device may further comprise a tensile film and a relaxed film on opposite sides of the fin structure, and an oxide cap layer over the fin structure.

Cryostat configuration for keeping cryogenic fluids in at least one cryocontainer (1) which is suspended on thermally insulating suspension tubes (2) and/or suspension devices which are connected to an outer jacket (3) of the cryostat configuration, wherein the at least one cryocontainer (1) is centered relative to a container disposed further outside, preferably the outer jacket (3), using at least three centering elements (4) which are distributed about the periphery of the cryocontainer (1), wherein one end (5) of each centering element (4) abuts or is connected to the container disposed further outside, characterized in that in at least one of the cryocontainers (1), each end (6) of the centering elements (4) facing away from the outer jacket (3) is connected to an actuator (7) which exerts a pressure or tensile force on the respective centering element (4), and which is mounted to the cryocontainer (1) at at least one contact point (A, A′, B, B′), wherein, through fixation of the actuator (7) to the cryocontainer (1) at the contact point (A, A′, B, B′), through thermal changes in size of the cryocontainer (1), through thermal changes in sizes of individual components of the actuator (7), and optionally through mechanical translation, a mechanical tension is generated in the corresponding centering elements (4) such that the centering elements (4) remain loaded with a nearly constant pressure or tension, preferably in the range of ±10% of the pressure or tension prevailing at room temperature and irrespective of the temperatures within the cryostat configuration. This yields a cryostat configuration which permits pressure centering without overloading the centering elements.

An integrated planar Bragg grating is fabricated by depositing layers of material onto a negative expansion substrate to form a waveguide, which is held in mechanical tension with the substrate. A Bragg grating is then formed in the waveguide. As the temperature of the waveguide increases, the mechanical tension between the waveguide and the substrate is relieved, such that the peak reflection wavelength of the Bragg grating remains nearly constant.

The invention belongs to the technical field of shape memory alloy applications, and in particular relates to a shape memory alloy wire winding drive mechanism. Shape memory alloy wire winding drive mechanism, including panel 1, several pulleys 2, fixed end 3, displacement output end 4, tension spring 5 and mechanically trained shape memory alloy wire 6; shape memory alloy wire 6 One end is fixed on the fixed end 3, and several pulleys 2 are wound around, the other end is connected to the displacement output end 4, energized and heated, the shape memory alloy wire 6 recovers and shrinks, and the shape memory alloy wire 6 passes through the pulley 2 6. The return displacement of the different broken lines bypassing the pulley 2 is well transmitted to the displacement output terminal 4 to realize the displacement output and realize the purpose of the shape memory alloy wire outputting a large driving displacement in a small space. The structure of the invention is simple, reliable and miniaturized, and can be widely applied in industrial fields such as mechanical electronics and automation.

A biosensing platform capable of high throughput mechanochemical biosensing comprising a DNA origami nanostructure having a plurality of slots into which recognition elements are strategically placed and apparatus that senses a change in the origami nanostructure in response to the introduction of a target where the apparatus includes a signal transduction unit and signal sensor which exploits mechanical signals in a recognition element which signal includes one or more mechanical tension or mechanochemical rearrangement event. The nanostructure is preferably a 2-dimensional or 3-dimensional arrangement of tiles linked by locking elements, such as aptamers that will open in response to an event such as exposure to a drug molecule, DNA, RNA or protein target.

The present invention provides methods for simultaneously colouring and straightening the hair, for straightening the hair directly before or after a colouring treatment, and for straightening the hair directly before or after a bleaching treatment. Besides, the present invention also provides a method for straightening the hair by drying the hair with hot air under conditions of mechanical tension. The straightening methods of the present invention utilize compositions containing formaldehyde.

The invention relates to a deposition method of a crystalline silicon battery back electrode. The method is characterized in that an electrode capable of preventing dissolving diffusion of element silicon to element aluminum at a preset temperature is deposited around the periphery of the local opening of crystalline silicon undergoing a passive film local opening technology; or the electrode capable of preventing dissolving diffusion of element silicon to element aluminum at the preset temperature is deposited around the periphery of the predetermined local opening position of crystalline silicon undergoing a passive film generation technology; and the preset temperature is not greater than 950DEG C. The method can eliminate recesses and cavities in the local contact position in current common aluminum silicon sintering processes, and reduces absorption of a sintered aluminum layer to long-wavelength photons; and local back field, local electric contact and mechanical tension are formed through arranging an electrode, so the back reflection of a PERC battery is further improved, and the current is improved.