1446results about How to "Change distance" patented technology

A spinal implant including first spinal attachment member for attaching to a first spinal portion, second spinal attachment member for attaching to a second spinal portion, and a post-implantation variable dimension device disposed between the first and second spinal attachment members, which is operable after completing surgery in which said spinal implant was installed into a patient, to cause relative movement between the first and second spinal attachment members.

The invention discloses a hydraulic valve mechanism of a variable valve lift. The hydraulic valve mechanism of the variable valve lift comprises a valve spool of a puller cam, a sleeve capable of rotating relative to the valve spool and a seal gland connected with a valve. The top end of the sleeve is adapted to the valve spool; the bottom of the sleeve is adapted to the seal gland and an oil chamber is formed in the middle part of the sleeve. The hydraulic valve mechanism of the variable valve lift is characterized in that a valve spool oil duct is formed in the valve spool; an inlet of the valve spool oil duct is movably adapted to a sleeve oil duct; the outlet of the valve spool oil duct is communicated with the oil chamber; and the inlet of the valve spool oil duct is in shape of a helical notch. Part of gears are arranged outside the sleeve so as to drive the sleeve to rotate by racks or other similar mechanisms. A return spring is further arranged on the valve spool. The problems of complicated structure, high cost and low reliability existing in prior art are solved. The hydraulic valve mechanism of the variable valve lift is a hydraulic valve mechanism which is capable of realizing quick response.

The invention relates to an X-ray device which includes an X-ray source and an X-ray detector which are mounted at a respective end of a common holding device. The holding device being attached to the room by way of a supporting device. In order to realize a more flexible construction of such X-ray devices that are widely used and are usually provided with a holding device in the form of a C-arm and nevertheless maintain a high positioning accuracy. The invention further relates to a supporting device constructed with a plurality of hinged, serially interconnected supporting members. The supporting device is formed notably by a serial manipulator, for example, a conventional robot arm.

A disk drive electrical interconnect assembly and additive method therefor. The interconnect assembly has a supporting or fifth layer of metal, a fourth layer of a polyimide precursor or a polyimide with a first face directed away from the fifth layer, a third layer directly attached to the first face and defining a first subset of one or more conductive trace pair members, a second layer on the third and fourth layers of a polyimide precursor or a polyimide with a second face directed away from the third layer, and a first layer directly attached to the second layer and defining a second subset of one or more conductive trace pair members in spaced, paired and laterally offset relation respectively with one or more of the first subset pair members.

A disk drive suspension and method has a metal load beam and an electrical interconnect assembly. The interconnect assembly has an insulative layer, a read pair of forward and return path conductive traces, a write pair of forward and return path conductive traces that are supported by the insulative layer, preferably in offset relation across the insulative layer, and a metal layer for grounding and mounted on the insulative plastic layer in fixed spaced relation to the conductive traces to be between the interconnect assembly and the load beam. The metal layer shields the conductive traces from variations in impedance occasioned by varying distances between said electrical interconnect and said load beam.

The invention discloses a calibration device of a laser alignment device and a method for measuring indication errors of the laser alignment device through the calibration device. The calibration device comprises two mutually independent rotation shafts capable of rotating for 360 degrees. One of the rotation shafts is used as a reference shaft and the other rotation shaft is capable of moving, pitching and deflecting in the horizontal direction and vertical direction. By setting the rotation angles of the rotation shafts, and adjusting the horizontal and vertical displacement quantity, pitching quantity and deflection quantity of the other rotation shaft, measurement of the displacement quantity in the horizontal and vertical directions, the rotation angle quantity of an inclinometer and indication errors of alignment deviation of a position sensitive sensor of the laser alignment device can be achieved. According to the invention, operation states of the laser alignment device in actual working processes can be precisely simulated; the standard alignment deviation quantity of measurement shafts can be displayed in a real-time and direct manner; calibration results are quite precise; and operability of the measurement process is quite high.

A supersonic externally pressurized inlet comprising a generally scoop-shaped supersonic pressurized portion for diffusing a supersonic free jet. The supersonic pressurization portion includes a main wall having a leading edge and a throat downstream of the leading edge; and sides joined to opposed side edges of the main wall to form a generally scoop-shaped member. The sides preferably protrude far enough into the supersonic flow to encompass the initial oblique shock attached to the leading edge of the main wall. The main wall has an inner surface generally formed as an inclined sector of the surface of revolution, the inner surface of the main wall cooperating with the inner surfaces of the sides to form a three-dimensional external pressurized surface. The supersonic external pressurization inlet also includes a subsonic diffuser section arranged to receive airflow from the supersonic pressurization section and diffuse the airflow to subsonic conditions. The variable geometry inlet includes an outer ramp hinged about its forward edge and forming part of the inner surface of the spoon diffuser, the pivotal movement of the outer ramp being used to vary the throat size of the inlet. The subsonic diffuser includes an inner ramp hinged around its trailing edge to maintain a smooth transition from the outer ramp.

The present invention discloses a touch apparatus integrating a pressure-sensing function. A display module is disposed at the bottom of the touch apparatus; a touch module and a cover body are disposed above the display module; the touch module is located on a conducting layer on the surface of the display module and is connected to the display module; a gap is formed between the touch module and the display module; the cover body is connected to and covers the touch module; when external touch force is applied to the cover body, the touch module bends in a force application direction of the external force due to the pressure, so that the change of the gap can lead to corresponding change of the capacitance and the pressure; and a specific frequency signal is configured for the display module and can distinguish the capacitance between the touch module and the display module, changed by the external force, and the pressure on the cover body and the touch module. According to the apparatus provided by the present invention, the pressure is sensed by using the change of the gap distance, and it is easier for the specific frequency signal in the display module to distinguish the external force such as finger clicking, and the pressure sensed capacitance.

A sensor device includes a housing base part, a bearer part, a chip structure situated on the bearer part, and a spring / damper combination via which the housing base part and the bearer part are elastically connected to one another. In the sensor device, the housing base part, the spring / damper combination and the bearer part are situated one over the other.

The invention discloses a transparent combustion chamber with a square interior passage, belonging to the field of the design of transparent combustion chambers for liquid-propellant rocket engines. The transparent combustion chamber comprises a head mechanism, a combustion chamber body mechanism, an observation window mechanism and a guiding mechanism; wherein the head mechanism comprises an oxidant cavity, a fuel nozzle, an oxygen nozzle and a fuel cavity; the combustion chamber body mechanism comprises a combustion chamber body substrate and a pressure-measuring filler neck; the observation window mechanism comprises an observation window cover plate and quartz glass; and the guiding mechanism comprises an head guiding slot and a tail guiding flange. In the invention, the observation window cover plate, the quartz glass and the combustion chamber substrate are mutually sealed with square graphite which expands to fill gaps among the observation window cover plate, the quartz glass and the combustion chamber substrate, so that glass can be ensured to be contactless with metal so as to play the role of protecting the quartz glass. The design of the square interior channel of the combustion chamber is favorable for leveling a quartz glass sheet to the inner wall surface of the combustion chamber and reducing the disturbance to an inner flow field of the combustion chamber; and four corners of the square interior channel are transitioned by adopting large circular arcs so as to prevent stress concentration.

A platform including two winged aircraft are tethered during flight by a single tether near their respective centers of gravity. The tether is windable about a reel, so that a distance between the aircraft can be changed during flight. The aircraft contain avionics configured to enable autonomous flight using natural wind gradients. One aircraft imposes aerodynamic forces on the other, through the tether, while flying at an altitude where wind speed is significantly different than wind speed at an altitude of the other aircraft. The two aircraft cruise back and forth within a maximum distance from a station on the ground. Cruise conditions are established using an iterative computer algorithm which utilizes flight measurements. The aircraft communicate information between each other, and the ground, and contain a payload which performs a useful function at high altitudes.

The invention discloses a puncture wire clamp. According to the puncture wire clamp, wire clamping grooves are formed by fixed puncture blades and movable puncture blades, wherein the positions of the two fixed puncture blades are changed by adjusting the position of a sliding block in a sliding groove, then, the distance between the two wire clamping grooves is changed, and thus the puncture wire clamp can adapt to main wire and branch wire connection with different separation distances. Meanwhile, the adjustable range of the distance between the two wire clamping grooves is wide, and the puncture wire clamp can adapt to main wire and branch wire connection with large span.

To provide a microphone unit for stereophonic recording capable of adjusting an intersecting angle of sound collecting axes in accordance with conditions without impairing directivity and sound quality of the microphone. Respective rotation bases (408, 508) are rotatable about a center axis with respect to mounting bases (404, 504), respectively, which are mounted to a main body (20) of a portable sound recorder (10) through respective brackets (402, 502). Respective top ends of respective knurls (414, 514) of leading ends of the respective rotation bases (408, 508) has a shape being cut to form an inclined surface from a radial direction, and respective microphones (418, 518) are retained so that diaphragms (420, 520) are in consonance with the cut surface. Accordingly, by rotation of the respective rotation bases (408, 508), sound collecting axes (426, 526) vertically extending from the diaphragms (420, 520) are changed in their axes like a precession, thereby being capable of adjusting an intersecting angle of the sound collecting axes (426, 526) of right and left microphones (418, 518).

The invention provides a method for measuring the thickness of a linear laser narrowband filter PSD heat radiation plate. The measurement method comprises the following steps: a linear laser emits a laser to irradiate the surface of a sampling; the light diffused from the surface of the sampling irradiates onto a PSD photosensitive surface through a narrowband filter plate and a lens; the signals of two paths of currents are output from the two sides of PSD under the action of the light; and the current signals output by PSD are processed to acquire the measured thickness. The measurement system adopts the double optical path structure optical differential measurement method which plays a certain compensation role in the angle error caused by angle inclination in the measurement system. Therefore, the method is relatively suitable for real-time non-contact measurement in a rugged industrial production environment.

The invention discloses a knee-joint operation adjusting and fixing distraction device which comprises a foot posture adjusting fixing apparatus capable of performing stepless continuous position adjustment and fixing in the front-back direction of a guide rail and rotating at 3360 degrees, a foot-thigh separation distance quick and fine adjusting device capable of achieving quick adjustment and fine adjustment of a separation distance between the foot and the thigh in the vertical direction of the shank, and a thigh posture fixing apparatus capable of adjusting rotation of the fixing apparatus according to a foot posture, wherein the lower end of the foot-thigh separation distance quick and fine adjusting device is connected with the foot posture adjusting fixing apparatus, and the upper end of the foot-thigh separation distance quick and fine adjusting device is connected with the thigh posture fixing apparatus. The foot-thigh separation distance quick and fine adjusting device comprises a quick adjusting rod mechanism with the lower end fixed on a foot fixing boot, wherein the upper portion of the quick adjusting rod mechanism is connected with a fine adjusting mechanism, and the upper end of the fine adjusting mechanism is connected with the thigh posture fixing apparatus. The knee-joint operation adjusting and fixing distraction device can meet continuous or temporary fixing and position adjustment under the condition that the knee joint of a patient is at different bending and stretching angles and inward and outward turning angles and any-time quick, fine and accurate adjustment of the foot, shank, knee joint and thigh positions of the patient and angle postures.

A magnetic recording medium having magnetic dots that can achieve high density recording is disclosed. The magnetic recording medium comprises at least an underlayer, a magnetic recording layer, and a protective layer sequentially laminated on a nonmagnetic substrate. The underlayer is composed of ruthenium or an alloy of mainly ruthenium and has an undulating structure formed with ridge lines in a predetermined pitch on the surface of the underlayer. The magnetic recording layer contains at least ferromagnetic crystal grains and a nonmagnetic component. Magnetic dots composed of crystal grains with a grain size not smaller than 4 nm in the magnetic recording layer are aligned on a surface of the underlayer along the ridge line, and each of the magnetic dots s separated by the nonmagnetic component from each other. A simple manufacturing method for this medium also is disclosed.

The invention relates to the technical field of food processing, and in particular discloses a fresh meat cutting and shredding device. The fresh meat cutting and shredding device comprises a rack anda cutting table, where the two ends of the cutting table are rotationally connected with a driving wheel and a driven wheel respectively, the driving wheel and the driven wheel are jointly wound witha plate-chain conveying belt, and the driving wheel is coaxially connected with a gear; a transverse plate is arranged above the cutting table and is connected onto the rack through a spring, and a press plate is arranged under the transverse plate and is connected with the transverse plate through a spring; a cutting knife is arranged on the side, facing the press plate, of the transverse plate,and a knife seam for enabling the cutting knife to pass is formed in the pres plate; the rack is fixedly connected with a fixed strip, and the fixed strip is vertically connected with a toothed rackvertically; the toothed rack is meshed with an incomplete gear; and the incomplete gear can be meshed with the gear in the rotation process. According to the fresh meat cutting and shredding device, by the meshing of the incomplete gear and the gear, the driving wheel is driven to rotate, and therefore automatic feeding and discharging of fresh meat is realized; by the meshing of the incomplete gear and the gear, the cutting knife is driven to move, and therefore cutting and shredding of the fresh meat are realized; and thus, the working efficiency is improved.

The invention provides an optical lens, a lens module and a terminal. The lens module comprises the optical lens and a photosensitive assembly, wherein the optical lens is used for imaging a scene onan object side onto the photosensitive assembly; the optical lens comprises a lens barrel and a lens set accommodated in the lens barrel; the lens set sequentially comprises a first lens group, a second lens group and a third lens group from the object side to an image side; the first lens group comprises at least one first reflecting surface, and the first reflecting surface faces the image side;the second lens group comprises at least one second reflecting surface, and the second reflecting surface faces the object side, is opposite to the first reflecting surface and is used for reflectingreceived light to the first reflecting surface; and the lens module further comprises a motor, and the motor is connected with the first lens group or the second lens group so as to drive the first lens group or the second lens group to move in an optical axis direction. According to the optical lens, the lens module and the terminal, continuous zooming can be achieved under the condition of small optical thickness, and the structure is simple.

A mobile chafing dish apparatus includes a dish-support pan, a plurality of legs connected to the dish-support pan, and swivel caster wheel assemblies connected to respective distal ends of each of the legs. A fuel-support pan assembly is connected to the plurality of legs, and a plurality of chafing dishes are supported by the dish-support pan. With the mobile chafing dish apparatus of the invention, the mobile chafing dish apparatus can be easily moved along a table top surface by simply pulling on or pushing the apparatus. The dish-support pan includes pan handles located at ends of the dish-support pan. A transparent cover is supported by the dish-support pan. Preferably, fuel-burner-reception walls are supported by the fuel-support pan assembly. Fuel burners are received in regions defined by the respective fuel-burner-reception walls.

The invention relates to a shock absorber which comprises a lower supporting seat, an upper supporting seat, a joint, a lower elastic piece and an adjusting piece, wherein the upper supporting seat is tightly pressed towards the lower supporting seat; the joint comprises a core block and a supporting rod, the core block is arranged between the upper supporting seat and the lower supporting seat, and the supporting rod extends out of the core block and penetrates through the upper supporting seat; the lower elastic piece is arranged between the core block and the lower supporting seat, and the adjusting piece is used for adjusting the distance between the upper supporting seat and the lower supporting seat. The stiffness valve of the shock absorber can be adjusted on an installation site so that the demand for different shock absorbing stiffness is met, and the adaptability of the shock absorber is stronger than that of a common shock absorber. Meanwhile, after the shock absorber is used for a long time, the stiffness variation of the shock absorber caused by the aging and creep deformation of the lower elastic piece can be corrected by readjusting the distance between the upper supporting seat and the lower supporting seat, and therefore the service life of the shock absorber is relatively prolonged.

A belt deceleration device for an electric power steering device, comprising: a driving pulley with a first helical tooth, a driven pulley with a second helical tooth, a driving belt with a third helical tooth, at the twist angle of each helical tooth Between β and the coefficient of friction μ between the first or second helical teeth and the third helical teeth, a relationship of tan β<μ is maintained. In addition, in the electric power steering device, the backlash adjustment between the gears meshing in the speed reduction device, or the adjustment of the belt tension of the speed reduction device is performed.

A network controller (NC) (105) that reduces the overhead exchanges for mobility events in a communications network is disclosed. Such a communications network is constituted by a wireless multihop communications network comprising a multihop chain (MH) (130) that wirelessly connects in series wireless communications entities (WCE) (110, 115) for relaying and the network controller as a first entity. Within the wireless multihop communications network a mobile node (MN) (125) wirelessly communicates with the wireless communications entity (115) located at the end of the multihop chain (130). In a communications network, the network controller (105) manages the multihop chain (130), and upon determining that the communications path has to be changed by a mobility event (ME) (141), it establishes a wireless communication between the mobile node (125) and a wireless communications entity (120) by expanding (132) the multihop chain (130).

The invention relates to a crushing device, and discloses a ceramic roller type crusher. The ceramic roller type crusher comprises a frame, a fixed roller and a movable roller, wherein the fixed roller is fixedly connected to the frame; the movable roller is arranged on the frame; one side, far from the fixed roller, of the movable roller is connected with a connecting rod; one side, far from the movable roller, of the connecting rod coats a fixed sleeve connected with the frame; a thread hole is formed in the connecting rod; and a through hole fitting the thread hole is formed in the fixed sleeve. The ceramic roller type crusher further comprises a bolt; the bolt penetrates through the through hole to be connected into the thread hole; a through groove is formed in the fixed sleeve; a pressing rod is slidingly connected into the through groove; an elastic piece is arranged between the pressing rod and the connecting rod; a fixed base is arranged on the fixed sleeve, and is connected with a thread rod; the thread rod penetrates through an opening hole formed in the pressing rod; and a nut is arranged at one side, penetrating through the opening hole, of the thread rod. Aiming at the problem that a traditional ceramic crusher only can crush ceramic raw materials with one size, the invention provides the ceramic roller type crusher capable of crushing the ceramic raw materials with different sizes.

The invention discloses an EMC inductor which comprises a magnetic core and a winding wound on the magnetic core, wherein lead inductance generated by the winding and turn-to-turn capacitance enable the second resonant frequency of the EMC inductor to be in a set frequency band, and the set frequency band is determined according to the frequency to which the interference signal to be inhibited corresponds. The invention also discloses an EMI filter comprising the EMC inductor and a switching power supply comprising the EMI filter. The invention also discloses a manufacturing method of the EMCinductor. The second resonant frequency of the EMC inductor can effectively inhibit the high-frequency noise in the frequency band, improves the high-frequency EMC performance of the inductor in the filter, and can realize high impedance characteristic the bandwidth of which is about 10MHz in the frequency band of 10MHz-200MHz.

The invention belongs to the field of manufacturing machines and devices of woven cloth and particularly relates to the field of cloth winders, in particular to an improved type cloth winder. The improved type cloth winder comprises a machine frame. A cloth feeding device and a winding device are arranged on the machine frame. The two ends of the winding device are respectively provided with a width adjusting device. Each width adjusting device comprises an adjusting frame. A stop block is arranged on each adjusting frame. The bottom of each stop block extends to the upper portion between a first winding wheel and a second winding wheel of the winding device. By the adoption of the improved type cloth winder, the width adjusting devices are arranged on the winder, it is guaranteed that the distances between the width adjusting devices and the cloth are identical, the cloth is prevented from deviating in the process of winding, the tidiness and the quality of winding of the cloth are guaranteed, the phenomenon that the cloth is wound multiple times is avoided, and the production efficiency is greatly improved.

The invention relates to a detection device, and particularly relates to a device for detecting the tensile capacity of rubber and plastic strips, The invention aims at solving the technical problem of providing a device for detecting the tensile capacity of the rubber and plastic strips, which is high in detection precision and cannot drop the rubber and plastic strips in a detection process. In order to solve the technical problem, the invention provides such a device for detecting the tensile capacity of the rubber and plastic strips. The device comprises a pedestal and the like, wherein the top of the pedestal is connected with a stretching mechanism; the stretching mechanism is connected with a fixing mechanism. According to the device, through arranging the stretching mechanism, in this way, the stretching detection on the rubber and plastic strips is convenient; moreover, a connecting rod, an LED (Light-Emitting Diode) lamp and a dividing rule are arranged; experimental data is conveniently recorded; meanwhile, a second bearing block, a rotating rod and the like are arranged; in this way, a person is not needed to turn off a servo motor; the accuracy of an experiment is increased; meanwhile, a second mounting rod, a threaded rod and a pressing block are arranged, and in this way, the rubber and plastic strips with different requirements on the tensile capacity are conveniently detected.

The invention relates to a multifunctional stair cleaning robot, in particular to a multifunctional stair cleaning robot with capacity of automatic adjustment as well as stairclimbing and stair cleaning methods corresponding to the robot. The multifunctional stair cleaning robot comprises a base staggering mechanism, a front base, an electronic control mechanism, a rear base, a power supply system, interlacing shaft telescoping mechanisms, a cleaning mechanism and a base telescoping mechanism. On the basis of the pendulum principle, the stairclimbing and stairs-down actions of the robot are simulated, the mechanical structure is simple, and implementation is easy. The multifunctional stair cleaning robot can be suitable for stairs with different widths, and the adaptive capacity of the robot is enhanced. By means of a present widely applied ZigBee wireless module, the cooperative matching effect of the front base, the rear base and the interlacing shaft telescoping mechanisms is realized, and the efficiency is higher. The climbing adaptability to the stairs with different widths can be realized, and the practicability is greatly improved.

The invention discloses intelligent clamping and fixing equipment for circuit board welding. The intelligent clamping and fixing equipment is characterized by comprising a fixed clamping assembly, a moving clamping assembly and an angle adjustment device, the moving clamping assembly is used for adjusting the distance with the fixed clamping assembly and jointly clamping a circuit board with the fixed clamping assembly, and the angle adjustment device is used for adjusting the angle of the included angle between the circuit board and the horizontal plane. The intelligent clamping and fixing equipment is stable in structure and fast and convenient to disassembly and assembly, the angle adjustment device adjusts the angle of the included angle between the circuit board and the horizontal plane so as to meet the board inspection or welding need, indexing holes are formed in two rotating discs, the numbers of the indexing holes in the two rotating discs are different, and the angle of theincluded angle between the circuit board and the horizontal plane can be quickly and effectively adjusted through the matched used of the two rotating discs; and the moving clamping assembly is arranged so as to facilitate clamping of the circuit boards of different length, in addition, a low-order plate is fixed through a sucking disc, the many traditional fixing steps are reduced, and the welding efficiency is improved accordingly.

A double-spindle machine tool comprises two tool-holder spindles and two work holding fixtures allocated thereto. A work holding fixture comprises a work carrier plate which supports itself on an adjustable abutment. This abutment is adjusted by means of an adjusting device in dependence on changes in the distance of the axes of rotation of the tool-holder spindles.

The invention discloses a hydrogel@gold nanocomposite and a preparation method and application thereof. The hydrogel@gold nanocomposite is composed of one or more core-shell structure units, and each core-shell structure unit is of a core-shell structure with hydrogel microspheres serving as the core and a gold nanosphere layer serving as the shell. The diameter of each gold nanosphere is 30-60 nm, and the diameter of each hydrogel microsphere is 5-200 micrometers. The preparation method includes the steps that the microfluidic chip technology is adopted to prepare the P(AAm-co-AAc) hydrogel microspheres; chloroauric acid is reduced in ethanediol to prepare the gold nanospheres; the gold nanospheres are transferred into water and mixed with the P(AAm-co-AAc) hydrogel microspheres, the mixture is subjected to standing for 12-48 h, and the hydrogel@gold nanocomposite is obtained. According to the hydrogel@gold nanocomposite and the preparation method and application thereof, the properties of a gold nanomaterial and hydrogel can be effectively exerted, the SERS effect can be substantially enhanced, and the sensitivity of SERS detection can be improved, and the detection capability on low-concentration molecules can be improved.