691 results about "Normal force" patented technology

Provided are bone conducting hearing devices having a normal force that secures the device to a user. A removable adhesive anchor secures an external component of the bone conducting hearing device to the user and provides reliable connecting that is comfortable, such as by a substantially uniform force generation over the contact area between the device and the user. Because the adhesive anchor is removable, a user can readily and reliably remove the device or connect the device, as desired. Also provide are methods of connecting any of the bone conducting hearing devices provided herein to a user, including the mastoid process of the user.

The invention relates to a method for producing flexible capacitor touch sensor, characterized in composed of middle layer preparation of PDMS, preparation of flexible PI substrate, graph metal sensitive electrode and relative electric connection, preparation of a first high-elasticity dielectric layer PDMS and a second flexible dielectric layer PI, graph metal drive electrode and relative electric connection, graph a top flexible insulation protective layer PI, separation of the flexible capacitor touch sensor. The invention optimizes and combines techniques, to realize the compatibility of organic flexible material PDMS, PI and traditional MEMS technique. And the capacitor touch sensor has compact structure, high mechanical strength, and high flexibility, while the product can contact the surface with any curvature to sense the volumes of normal force and tangent force, and be applied for the production of flexile capacitor touch sensor array.

The invention discloses an image texture tactile representation system based on force/haptic interaction equipment for virtual reality human-computer interaction, which is characterized in that when the virtual proxy of the force/haptic interaction equipment slides on a texture surface of a virtual object in a virtual environment, the surface height of the object texture corresponding to the contact point and a coefficient of kinetic friction for reflecting the rough degree of the contact point are firstly obtained on the basis of an image processing method, a continuous normal contact force model reflecting the concave-convex degree of the contact point and a tangential friction model reflecting the rough degree of the contact point are respectively established, and finally the texture contact force is fed back to an operator in real time through the force/haptic interaction equipment so as to realize the force haptic express and reappear when fingers slide over the surface texture of the virtual object. The feedback continuous change normal force not only enables the human-computer interaction to be more real, but also enables an interaction system to be more stable, and the feedback friction related to the rough degree of the contact point also further enhances the sense of reality when the texture reappears.

A precision tactical mount (12) includes a horizontal controller (30) and a vertical controller (34) for determining azimuth angles and elevation angles for a sight line of the precision tactical mount (12). The horizontal controller (30) and the vertical controller (34) have friction blocks (102, 114, 196) which engage mating friction surfaces with selectable forces for providing specific resistance against azimuth and elevation angular movement, without requiring separate mechanisms for locking the tactical mount (12) in selected positions. The friction blocks (102, 114 and 196) are preferably formed of softer materials than the mating friction surfaces to conform to the shape of the mating friction surfaces with increased normal forces, providing varying surface areas. The vertical controller (34) includes a course threaded screw member (142) mounted at an angle to a centerline (6) of the precision tactical mount (12) to provide fine control adjustment for elevation.

An elevator installation has braking equipment for braking and holding an elevator car which moves in vertical direction within guide tracks or rails. The braking equipment consists of at least two brake units each comprising a normal force regulation device that sets a normal force (F_N) in correspondence with a normal force value determined by a brake control unit and/or a locking device that locks the brake unit in a set braking position and which preferably maintains the set braking position in the case of an interrupted energy supply. The braking equipment provides a gentle braking or holding of the elevator car, which corresponds with the operational state of the elevator installation, with a low energy requirement.

A robot for cleaning and inspecting conduits has a synchronizing mechanism, which extends all driving units simultaneously and with a constant normal force applied to the conduit wall. The robot may be equipped with adapters for conduits with rectangular cross section, and with extension bars for conduits with large diameters. Further, the robot may be equipped with sensors monitoring the robot status, these include a sensor of the synchronizing mechanism position, inclinometer and gyroscope. Data from these sensors may be displayed on a monitor. The movement of the robot inside the conduit and therefore the speed of individual tracks is controlled by the operator by three control elements: direction of turning, diameter of bend and speed of motion. The robot is also able to travel backwards inside the conduit automatically based on stored information about forward movement.

The invention discloses a slope stability analysis slice method based on global optimization and belongs to the field of slope stability analysis. The method includes that a slope slip mass is divided into vertical strip blocks or inclined strip blocks, acting force (including normal force and shearing force) on the bottom faces of the strip blocks and acting force (including normal force and shearing force) between the strip blocks are utilized as unknown variables, stable safety coefficient of the slope is utilized as a target function, and a balance equation of the strip blocks, the yield condition of the bottom slip face of the strips blocks, the yield condition of contact face between the strip blocks and other constraint conditions are combined to build a nonlinear mathematical planning model for slope stability analysis, and an optimization algorithm is utilized to solve the global optimum maximum stable safety coefficient. By means of the method, the performance that the slope safety coefficient has a floor solution can be achieved. The method has the advantages of being clear in conception, high in calculation accuracy and the like and can be applied to stability analysis of soil slopes or rock slopes.

A capacitive force sensor is provided that includes a first support layer and a second support layer, a dielectric layer disposed between the first support layer and the second support layer, where the dielectric layer is a non-conductive elastomer that is incompressible in the a normal direction and deflects in a shear direction, a layer of parallel conductive traces disposed between and bonded to the dielectric layer and the first support layer, and a conductive layer of parallel shear channel traces having at least two distinct channels disposed between and bonded to the dielectric layer and the second support layer, where the parallel conductive traces and the parallel shear channel traces are locally parallel to each other and provide capacitive shear force measurement sensitivity while rejecting normal forces, where the normal force measurement is decoupled from the shear force measurement.

A normal force gradient/shear force sensor device and measurement method for measuring internal stresses in tissues of a person supported by a chair or bed includes a planar matrix array of peripheral normal force sensors radially spaced from central shear force sensors, comprising an electrically conductive disk located within a circular opening bordered by circumferentially spaced apart electrodes. The disk and electrodes are located between upper and lower cover sheets made of a stretchable material such as polyurethane; one cover sheet is adhered to the disk and the other sheet is adhered to a support sheet for the electrodes. Motion between the cover sheets in response to shear forces exerted on the array causes the disk to press more or less tightly against the electrodes varying electrical conductance between the disk and electrodes proportionally to the magnitude and direction of the shear force. Each normal force sensor includes an electrically conductive film pressed between row and column conductors. Measurements of conductance values of pairs of sensor, which vary proportionally to normal forces exerted on the sensor, are used to calculate a gradient vector of normal forces exerted by a body part on the sensor array, which is combined with the shear force vectors in an algorithm to calculate internal reaction shear forces, e.g., on flesh near a bony prominence.

An electrical connector (3) for electrical interconnection of a pair of circuit substrates (5, 6) includes a carrier plate (7) defining a plurality of openings (71) retaining electrical terminals (4) therein. The openings correspond to circuit pads (51, 61) on the circuit substrates. Each terminal generally has a canted coil spring configuration. Each loop of the canted coil spring configuration has curved contact portions (41, 42) for bearing against corresponding circuit pads, engaging portions (43) for engaging side walls of the carrier plate at a corresponding opening, and connection portions interconnecting the curved contact portions and the engaging portions. Radiuses of curvature of the curved contact portions are less than radiuses of curvature of the connection portions of each loop. Each loop closely abuts an adjacent loop of the terminal. Relatively large contact normal force is thus attained when the curved contact portions bear against the corresponding circuit pads.

A fiber optic connector assembly includes two connectors on fiber optic cables joined together by a clip having a trigger arm and a clip body. The trigger arm extends from the clip body at a shallow angle. The shallow angle of the trigger arm effectively reduces an amount of normal force required to activate latch mechanisms on the connectors. The clip is sandwiched between a connector housing and a boot, inhibiting the clip from axially translating relative to the connector assembly. The clip further includes an anti-rotation system to inhibit rotation of the connector assembly relative to the clip.

Panels of the invention are used to form large capacity enclosure sidewalls. Trailers, trucks and cargo vans are examples of such enclosures. Intermediate framing support is not needed. Each panel has a polymeric core with a first metal cladding and a second metal cladding. The core has opposed longitudinal configured ends, each of which has a stepped shoulder which extends the length of the panel. The metal claddings follow the contour of the stepped shoulder. The stepped shoulders are offset from the first face of the core approximately one-half the thickness of the panel. In assembling a walled enclosure sidewall, the panels are positioned so that adjacent stepped shoulders mate together to create a flush face surface. Joining means are used in the stepped shoulder areas to permanently join together adjacent panels. The joint formed by the attachment has a total of four metal cladding layers and two interposed polymeric cores to give the joint sufficient rigidity for the sidewall to withstand normal forces during use.

Disclosed is a packed, highly compressed cuboid-shaped filter tow bale, the top side and bottom side of which are free from noisome curvatures or constructions. The bale is characterized by the fact that (a) the bale has a packing density of at least 300 kg/m³, (b) the bale is entirely wrapped in an elastic packaging material which is provided with one or several convectively airtight connections, and (c) the upper side and lower side of the bale are substantially planar such that a flat plate which fully covers the bale can be pressed onto the upper side of the bale via a centrally effective normal force of 100 N and at least 90 percent of the surface of the upper side of the bale, which lies within the largest rectangle that can be inscribed by vertically projecting the bale onto the pressed plate, has a maximum distance of about 40 mm from the flat plate when the unopened bale is placed on a horizontal plane. A particularly suitable method for producing said bale comprises the following steps: (a) filter tow is supplied in a compressed form; (b) the compressed filter tow is enveloped in a wrapping; (c) the wrapping is closed in an airtight manner; and (d) the wrapped bale is relieved of the load. The wrapping of such a bale is largely prevented from bursting as a result of the prevailing internal pressure. The inventive bale has an ideal cuboid shape such that curvatures negatively affecting the bale during transport, or constructions hampering the behavior of the filter tow, are largely prevented from occurring.

A method of performing friction stir welding is provided herein. More specifically, traditional friction stir welding requires a rotatable head that is forced against a plurality of work pieces to bond the same. The rotational and normal forces generated by the friction stir welding tool are generally reacted by a backing plate, anvil, mandrel or other mechanisms, such hardware are subject to the applied forces and are often supported with additional internal supports. Conversely, a method of performing a friction stir weld is described that omits the need for such a backing member and internal supports as it is performed using a self reacting pin tool.

A method for fore-aft stabilization of a vehicle for motion in a specified direction over an underlying surface. The vehicle has at least one forward wheel and at least one aft wheel, and the forward wheel is characterized by a force normal to the instantaneous direction of motion of the vehicle. A motor actuator drives each aft wheel, and a controller governs the motor actuator or motor actuators in such a manner as to dynamically stabilize the vehicle, according to a uniform control law, when the forward wheel is in contact with the underlying surface or not. A torque is applied to the aft wheel on the basis of vehicle pitch or the force on the forward wheel normal to the direction of motion. Additionally, a periodic rotational modulation may be applied to the aft wheel, and a stabilizing torque provided based on a detected response, either of vehicle pitch or of normal force on the front wheel. Left and right motor actuators may independently control left and right aft wheels to continue turns as governed by user steering, whether or not forward wheels are in contact with the ground.

The invention provides a test device for dynamically measuring fretting pair frictional coefficient during the fretting fatigue process. A frictional coefficient measurement component realizes the fretting working condition and dynamically measures the frictional coefficient of a fretting pair formed by the cooperation of a fretting section and a fretting pad of a test piece during the fretting fatigue process; a normal force loading component realizes load applying in the horizontal direction; an upper-end fixing component realizes the fixing of the test piece and a clamp body; the horizontal direction loading in the fretting fatigue test is realized by adopting a hydraulic system; the loading system adopts a closed force system frame structure; the piston rods of hydraulic cylinders pushes the fretting pad to clamp a sliding block to move in a sliding groove in the clamp body; the frictional coefficient measurement component is fixed on the upper-end fixing component through a pin bolt; in the vertical direction, except the own gravity and the gravity of the hydraulic cylinder, the frictional coefficient measurement component only receives the frictional force produced due to fretting action between the test piece and the fretting pad; by adhering a strain piece to the working section of the clamp body and calibrating, dynamic monitoring of the frictional coefficient of the fretting pair during the fretting fatigue test process is realized.

The invention relates to a piezoelectric-type four-dimensional cutting force-measuring platform belonging to the technical field of sensing measurement and control, in particular to a force-measuring platform for detecting normal force and torque in three directions in the cutting process. The force-measuring platform comprises a base, a middle plate, an upper plate, a lead output plug, a lead, a thermal baffle, a sealing ring, four piezoelectric quartz sensors, a protective pad and connecting screws, wherein the four piezoelectric quartz sensors in diamond arrangement between the base and the middle plate are uniformly distributed on the same circumference of the same horizontal plane. The piezoelectric-type four-dimensional cutting force-measuring platform can simultaneously measures the normal force and the torque in three directions in any cutting process, has the advantages of high sensitivity, good linearity and repeatability, little transversal interference and high measurement precision and has universality for measuring drilling, grinding, milling, lathing and planing, thereby having wide application range.

The invention discloses a flexible three-dimensional force touch sensor of multi-fingered hands of a human-simulated robot and a three-dimensional force detecting system, relating to the field of touch sensors of robots. The invention aims at solving the problem that more touch sensors only can acquire normal force but can not detect the normal force and the force simultaneously like the human hands. A sensor body consists of a force-transferring hemispherical layer, a flexible top-level electrode layer, a composite material QTC (Quantum Tunneling Composites) with quantum channel effect and a flexible bottom-level electrode layer which are arranged in sequence from top to bottom; a signal acquisition circuit consists of a mixed-signal array programmable on-chip system and an analog multiplex selection module; the on-chip system comprises a digital logic module, an analog digital conversion module ADC, a digital analog conversion module DAC, an analog signal register I, an analog signal register II, a voltage amplifying circuit and a multi-way switch; and the analog multiplex selection module comprises an analog multi-way switch I and an analog multi-way switch II. The invention is used for the touch sensor for detecting the three-dimensional force of the multi-fingered hands of the human-simulated robot.

The invention provides a simple, accurate and field airbag-loading potable soft and weak interlayer direct shear apparatus. In the direct shear apparatus, airbag loading is adopted to apply a normal force, and a piston system arranged on the upper part of a reaction frame can guarantee the verticality and application uniformity of the normal force when a sample produces shearing displacement; and a ball screw system applies a tangential force and linear guides under a sample seat can guarantee the horizontality of the application direction of the shearing force and the continuity and smoothness of the tangential force. A normal force applying system avoids bearing load, and airbag pressurization is accomplished by a potable pressurizing device and is high in precision, simple and easy to implement. A tangential force applying system uses a screw handle to apply force and the force application is steady and highly operable. Both the normal force applying system and the tangential force applying system are fixed, small in volume, high in reliability and convenient in on-site test. The test device can perform the quick shearing of field soft and weak interlayer and consolidated drained quick and slow shear tests and is simple, precise and high in operability.