60 results about "Cantilever bending" patented technology

A filtering face mask that includes a mask body that is adapted to fit at least over the nose and mouth of a wearer to create an interior gas space when worn; and an exhalation valve that is in fluid communication with the interior gas space. The exhalation valve includes a valve seat with a seal surface and an orifice through which exhaled air may pass to leave the interior gas space; and a flexible flap that is mounted to the valve seat such that the flap makes contact with the seal surface when the valve is in its closed position and such that the flap can flex away from the seal surface during an exhalation to allow exhaled air to pass through the orifice. The flap is unbiased when in its closed position and exhibits a cantilever bend ratio of 0.0050 or less.

The present disclosure relates to one or a combination of an absorbent article's chassis, inner leg cuffs, outer leg cuffs, ear panels, side panels, waistbands, and belts that may comprise one or more pluralities of tightly spaced (less than 4 mm, less than 3 mm, less than 2 mm, and less than 1 mm) and/or low Average-Dtex (less than 300, less than 200, less than 100 dtex) and/or low Average-Pre-Strain (less than 300%, less than 200%, less than 100%) elastics to deliver low Pressure Under Strand (less than 1 psi according to the conditions defined by the Pressure-Under-Strand Test), while providing adequate Section-Modulus (between about 2 gf/mm and 15 gf/mm) to make the article easy to apply and to comfortably maintain the article in place on the wearer, even with a loaded core (holding at least 100 mls of liquid), to provide for the advantages described above. Further, the elastomeric laminates of the present disclosure outperform existing laminates currently used for disposable absorbent articles as it relates to one or more key parameters (including Percent Contact Area, 2-98% Height Value, Pressure-Under-Strand, Air Permeability, Water Vapor Transmission Rate, Caliper, Caliper Retention Value, Cantilever Bending, Open Area, Section-Modulus, Rugosity Wavelength, Rugosity Frequency, Graphic Distortion Ratio).

A micro-switching device includes a base substrate and a cantilever fixed to the base substrate via a spacer or anchor portion. The cantilever has an inner surface facing the substrate and an outer surface opposite to the inner surface. A conductive strip is formed on the outer surface of the cantilever. The switching device also includes a pair of stationary electrodes fixed to the base substrate. Each of the electrodes includes a downward contacting part spaced from the conductive strip on the cantilever. As the cantilever bends upward, the conductive strip is brought into contact with the contacting parts of the respective stationary electrodes.

The invention discloses a method and a device for observing the conformation transition of macromolecules and the biochemical reaction between target molecules and probe molecules. The method comprises the steps as follows: the macromolecules and one or more of the probe molecules which are different or identical are arranged on single side surfaces of various micro-cantilevers in a micro-cantilever array; the incident parallel rays emitted from a light source reach the micro-cantilevers, and the reflection rays are received by an optical receiver assembly to form an array of reflection ray spots corresponding to the micro-cantilevers one by one; when the conformation transition of macromolecules occurs or the combination of the probe molecules and the target molecules present in a solution to be tested occurs, the micro-cantilevers bend and deform with the deflection of the reflection rays, and accordingly, the positions of the corresponding reflection ray spots change; and according to the position change and the displacement of the reflection ray spots corresponding to each micro-cantilever, the conformation transition of the macromolecules can be learned, whether the target molecules corresponding to the probe molecules are present or absent in the solution to be tested can be determined, and the concentration of the target molecules present in the solution can be obtained. The invention can realize the simultaneous observation of the displacement signals of a plurality of micro-cantilevers, and at the same time eliminate the noise signals due to the variation of the refraction index and the change of the intensity of a light source. The invention has the advantages that the effects of vagabond rays can be greatly reduced by controlling the measurement of the light beam polarization state, and the measurement precision is improved.

The invention discloses a surface roughness online detection device and method for a high-temperature coating superconductive baseband and belongs to the technical field of detection of high-temperature coating superconductive basebands. The surface roughness online detection device for the high-temperature coating superconductive baseband comprises a band winding and unwinding system, an atomic force microscope, a power system and an IPC (Industrial Personal Computer) system. A surface roughness online detection method comprises that a baseband is placed on a sample stage of the atomic force microscope through the band winding and unwinding system, a probe tip acts on the surface of the baseband to be detected, laser beams emitted by a laser is focused on a back surface of a micro-cantilever through a reflector and is reflected on a light spot position detector, during sample detection, due to interaction forces between atoms on a baseband surface and atoms at the tip of the probe of the micro-cantilever, the micro-cantilever bends and fluctuates along with the surface topography of the baseband, reflected beams also offsets along with the surface topography of the baseband, then a control system indicates a position of a light spot through a light-difference-converted voltage signal, and a baseband RMS (root-mean-square) roughness Rq and an arithmetic mean roughness Ra are computed through a computer. The simple-structure atomic force online checking device and detection method can meet requirements of surface inspection of samples.

The invention relates to a stepping piezoelectric drive motor, which comprises piezoelectric vibrators, a rotating shaft, mass blocks, a base and composite cantilevers, wherein two ends of each piezoelectric vibrator are fixedly connected to the rotating shaft and the corresponding mass block respectively; each composite cantilever is in a sheet structure and is formed by laminating a high-friction elastic material and a low-friction elastic material; the friction coefficients of the high-friction elastic materials and the low-friction elastic materials are different; the composite cantilevers are vertically arranged on the lower surfaces of the mass blocks; the laminated surfaces of each high-friction elastic material and the corresponding low-friction elastic material is parallel to the bonded surface of piezoelectric ceramic and one corresponding elastic substrate; the rotating shaft and the base form a rotation pair; the piezoelectric vibrators vibrate to drive the mass blocks to vibrate; the composite cantilevers are bent; and the motor directionally rotates by combining the action of the materials with two friction coefficients adopted by the composite cantilevers. The stepping piezoelectric drive motor has the advantages of being long in service lifetime and simple in structure.

The thread form can provide a controlled thread stiffness which can more evenly distribute loads and can be less sensitive to changes in relative pitch. The controlled stiffness of the thread can provide a desired cantilever bending of the thread under assembled load. The thread form can utilize a traditional thread form at and/or above the pitch diameter, thereby maintaining the area of contact close to that of a standard thread form. Standard gaging implements can be used to ascertain the thread pitch and for quality control. The thread form includes a side extending between the crest and the root. The side has a first portion extending from the crest toward the root and the second portion extending from the first portion toward the root. The first and second portions extend toward the root in different orientations relative to the thread.

A push plate that includes springs in the form of cantilever flexures and an inspection window is disclosed. The push plate provides a known, uniform, down force and minimal torque to a package to be tested. The cantilevers have a known, calculable down force producing stiffness. The window provides for viewing of the package during testing.

The invention relates to an axial and vibration high-low cycle composite fatigue test device. The device comprises a base (2) which is rigidly connected with excitation equipment through a transitionplate (1), cantilevers arranged on two sides of the base (2) are connected with connecting arms (4); one end of each of two connecting rods (5) is mounted on one connecting arm (4); a beam (6) is installed at the other end of each connecting rod; the beam (6), bearings (3) arranged on the two sides of the base (2), the connecting arms (4) and the connecting rods (5) form a load frame capable of smoothly rotating around cantilevers on the two sides of the base (2), a sample (8) and an axial force applying device (9) are connected to the symmetry axis of the load frame in series, and an axial force applying device (9) is fixed to the base (2). The axial force applying device of the test device can axially load the sample; when the excitation equipment excites at a resonance frequency, the load frame drives the sample to resonate, and the cantilever bending load generated by resonance is completely borne by the sample, so that the high-cycle vibration fatigue load is superposed on the low-cycle axial fatigue load.

A golf club shaft which satisfies strength and is lightweight is provided by the present invention. This golf club shaft comprises one or more fiber-reinforced resin layers, and is characterized by satisfying the following relationship (1), wherein x [mm] is the displacement in a cantilever bending test, M [g] is the mass of the golf club shaft, and L [mm] is the length thereof, and by satisfying the following strength standard values [1]-[4]: M×(L/1168)<49.66 e^−0.0015x (relationship 1); [1] the three-point bending strength at T-90 (the position 90 mm apart from the smaller-diameter end) is 800 N or higher; [2] the three-point bending strength at T-175 (the position 175 mm apart from the smaller-diameter end) is 400 N or higher; [3] the three-point bending strength at T-525 (the position 525 mm apart from the smaller-diameter end) is 400 N or higher; and [4] the three-point bending strength at B-175 (the position 175 mm apart from the larger-diameter end) is 400 N or higher.

A scanning probe microscope capable of radiating light on a sample without moving the sample from the scanning probe microscope and measuring the sample with controlling the condition under which the sample is placed and without changing the location of the sample is provided. The scanning probe microscope includes a cantilever having a probe on a top end thereof, sample moving means for moving the sample, detachable cantilever bending amount detecting means for detecting bending amount of the cantilever by means of a laser beam and exposure means for exposing the sample to light from upper side of the cantilever, wherein the cantilever bending amount detecting means is independently detachable when exposure of the sample is carried out.

The invention discloses a fixing and limiting device for a front wheel six-component slip ring and method and medium and heavy trucks. The device comprises a fixing assembly and an elastic limiting assembly, wherein the fixing assembly comprises a cantilever bending plate and a vertical supporting plate, the vertical supporting plate extends along a vertical direction, the cantilever bending plateextends along a transverse direction, the cantilever bending plate is connected with the vertical supporting plate, and the cantilever bending plate crosses to the outer side of a tire from the innerside of the tire; the elastic limiting assembly comprises a guiding rod and a limiting support, the guiding rod extends along a vertical direction, and the lower end of the guiding rod is fixedly connected with the slip ring of a six-component sensor; and the limiting support is connected with a suspending end, the limiting support is provided with a limiting hole for enabling the upper end of the guiding rod to pass through and enabling the guiding rod to move freely along a vertical direction, the upper end of the guiding rod is a preset height higher above the limiting support, and transverse and vertical movement of the guiding rod is limited. The problems of inadequate structural strength reliability, high manufacturing cost, poor generality, large measurement data errors and low slip ring service life existing in the medium and heavy truck six-component slip ring fixing device in the prior art can be solved.

The invention discloses an aeroelastic model of a suspended monorail wind tunnel test pier stud. The aeroelastic model comprises a pier body and a cantilever end. The cantilever end connected to the top of the pier body is provided with a lower bending bracket. The pier body and the cantilever end have steel box structures and each of the pier body and the cantilever end is provided with a plurality of steel partition plates at intervals in a respective length direction; each steel partition plate is connected with a counterweight block; and each counterweight block is not in contact with theinner wall of the pier body or the inner wall of the cantilever end. According to the aeroelastic model, the additional mass is provided by using all counterweight blocks to meet the model need; sincethe counterweight blocks are not in contact with the inner wall of the pier body or the inner wall of the cantilever end, the structural damping influence is avoided; the counterweight blocks are arranged discontinuously in the respective length direction of the pier body or the cantilever end to prevent the influence on the rigidity of the structure, so that conformity to the actual condition ofthe structure is improved and the wind tunnel test becomes real, accurate and reliable. The aeroelastic model has advantages of simple structure, great convenience in setting, and good effect.

A seawater circulation system for performing corrosion fatigue tests on metal materials consists of a seawater container 1, a micro-pump 2, a rubber conduit 3, a water flow control valve 4, a double-layer anti-leakage corrosion device 5, a sample fixing end 6, and a sample surface crack end 7. Low cycle fatigue test sample end 8, sample loading end 9, conduit 10, and filter box 11. The seawater container is inserted into the micro-pump, and the rubber conduit connects the micro-pump and the water flow control valve and communicates with the double-layer anti-leakage corrosion device. The fixed end of the sample, the crack end of the sample surface, and the low-cycle fatigue test can be fixed on the double-layer anti-leakage corrosion device. The sample end, the sample loading end, and the other end of the double-layer anti-leakage corrosion device communicate with the filter box through a conduit, and return to the seawater container after filtration. The low-cycle corrosion fatigue test under the cantilever bending loading mode can be carried out, which changes the previous status of using air fatigue performance data instead of seawater fatigue performance data for metal verification, and increases the safety, reliability and service life of the ship.

The invention discloses a set-mounted vehicle-mounted winch system, which is characterized in that it includes a main hook and an inner swing arm, the main hook is provided with a longitudinal column, the front end of the longitudinal column is connected with an oblique arm inclined to the left, and the front end of the oblique arm is connected with a A straight arm stretching forward in the same direction as the longitudinal column. The straight arm is connected with a cantilever that bends to the right and then bends backward to form a hook. A gap is set in the center of the straight arm and the cantilever. The gap runs through the cantilever front and back, and the gap runs through the straight From the arm to the joint between the straight arm and the oblique arm, the straight arm is provided with a chute in the front and rear directions that communicates with the gap, and the center of the longitudinal column is provided with a through hole that runs through the front and back. The inner swing arm is elbow-shaped and the thickness is equal to the width of the gap. The front end of the swing arm is located in the gap and is connected to the chute through the hinge shaft. The rear end of the inner swing arm is provided with a cylindrical boss, and the front end of the through hole is provided with a positioning hole that can match the boss; it will not be unhooked even if it is loose, and the traction rope is bent and deformed. The friction and friction are small, the service life of the traction rope is longer, and it is not easy to produce dead bends.