247results about How to "Unlock" patented technology

The invention provides an integrated pressure cooker facilitating lid opening. The integrated pressure cooker comprises a cooker body, a cooker lid and a fastening part, the fastening part comprises amovable clamping part arranged on the cooker lid and a fastening part body located on the cooker body, the cooker lid is fastened on the cooker body through the fastening part and further comprises openable clamping tongs, by opening and closing the cooker lid, the cooker body is unlocked and locked, the cooker lid is provided with an unlocking button, a first conveying mechanism is arranged between the unlocking button and the clamping tongs, the unlocking button drives the clamping tongs to be opened through the first conveying mechanism, when the unlocking button is triggered to move froman initial position to a first position, the clamping tongs are opened, and the unlocking button continues to be triggered to move to a second position, the movable clamping part is separated from thefastening part body. By operating the unlocking button, the clamping tongs are opened and separated from the fastening part, the pressure cooker is opened by one motion of operating the button, the problem in the prior art that the pressure cooker is complex in lid opening is solved, and a user conveniently uses the integrated pressure cooker.

A power storage device for a new energy vehicle, including a load plate fixed in the engine room of the vehicle and a mounting frame for installing the battery. The mounting frame is provided with a cavity with the mouth facing upward, and the battery can be lifted and placed in the cavity. , the top of the battery is equipped with handles on the left and right, the left end of the bearing plate is fixed with an upwardly extending vertical plate, and the lower end of the vertical plate is provided with a placement groove with the mouth facing right, and a toothed wheel is rotatably installed in the placement groove , the toothed wheel is driven by a motor fixedly installed in the vertical plate, the toothed wheel penetrates the placement groove, the left end of the mounting frame is provided with a first sliding groove with the mouth facing downward, and a sliding groove is installed in the first sliding groove Moving plate, the left end surface of the sliding plate is provided with a toothed bar, the left end wall of the first sliding groove is provided with a communication groove, the loading plate is provided with a fastening groove opposite to the first sliding groove, and the left end of the fastening groove is also provided with a Second slip slot.

The invention relates to an assembling fixture for a water cutter decoration bar, which is characterized by comprising a left side end cover detecting assembling device for mounting a left side end cover on the left side of a water cutter decoration bar and a right side end cover detecting assembling device for mounting a right side end cover on the right side of the water cutter decoration bar, and a plurality of buckle assembling devices and a plurality of pushing devices, wherein the left side end cover detecting assembling device and the right side end cover detecting assembling device are positioned at the left end and the right end of the fixture respectively, and the plurality of buckle assembling devices and the plurality of pushing devices are positioned in the middle of the fixture. According to the water cutter decoration bar fixture, through the adoption of the reasonable arrangement of the left side end cover detecting assembling device, the right side end cover detecting assembling device and the plurality of the buckle assembling devices and the plurality of the pushing devices positioned in the middle, the mounting of the left end cover, the right end cover and buckles can be completed respectively, the water cutter decoration bar mounted with the end covers and the buckles is pushed out through the pushing devices after the mounting is completed, and the automation of the whole process can be realized conveniently.

The invention relates to a TPCM system for building and maintaining a trusted operating environment. The TPCM system includes a power control unit connected to a power source, a startup code metric module, a platform environment metric module and a dynamic metric module, wherein the power source supplies the power control unit with a standby voltage as an operating voltage of the TPCM system. Thestartup code metric module is connected to a startup code flash memory of a computer main board through a main control bus to control its power supply and is configured that the startup code is read in the startup code flash memory after the TPCM system is powered up, a first hashed value of the startup code is generated and compared with a first reference hashed value, and a power-up signal is sent by the power control unit when the first hashed value and the first reference hashed value are consistent. The invention also relates to a method. The TPCM system for building and maintaining the trusted operating environment can improve the reliability of the trusted platform and reduce the cost while preventing a startup code chip from tampering hardware and preventing the trusted operating environment from being built with the tampered hardware, and can dynamically ensure the trusted operating environment.

The invention provides an overhead line coiling and uncoiling device of a charge connecting line, and belongs to the field of a charge gun connecting line protection device. The device comprises a charging pile, wherein the charging pile is arranged on the bottom surface of a ceiling of a charging station; the bottom surface of the ceiling of the charging station is provided with connecting rods; the connecting rods are positioned on the two sides of the charging pile; transverse tracks are connected with the ceiling of the charging station by the connecting rods; certain ends of the transverse tracks are provided with a line outlet; the transverse tracks are provided with a line inlet corresponding to the position of the charging pile; a slide block is arranged on the transverse tracks; the charge gun connecting line leads in from the line inlet, bypasses the slide block and gets out from the line outlet; a spring is arranged between the slide block and the end face at one end of the transverse track, so the charge gun connecting line does not trail on the ground, the service life of the charge gun connecting line is prolonged, the charge gun connecting line is not stepped on or crushed by an electric vehicle, and insulating skin is prevented from being damaged to prevent unexpected situations.

The invention relates to a refrigerator, a door for the same and a disassembling method for a display control assembly of the refrigerator. The door comprises a panel, a door lining, an embedded box and the display control assembly, wherein the panel is provided with a hollowed-out window; a mounting opening which is opposite to the hollowed-out window is formed in the front end of the embedded box; the embedded box is arranged between the panel and the door lining; the display control assembly is provided with a touch display screen, a mounting plate rack for fixing the touch display screen and a front cover plate arranged on the front side of the mounting plate rack; the touch display screen, the mounting plate rack and the front cover plate which are configured as a whole body successively pass through the hollowed-out window and the mounting opening and are mounted in the embedded box from front to back; the front cover plate is detachably connected with the mounting plate rack in a clamped manner; and the mounting plate rack is also detachably connected with the embedded box in a clamped manner. The disassembling method comprises the following steps of relieving clamped connection between the front cover plate and the mounting plate rack and disassembling the front cover plate from the mounting plate rack; and relieving clamped connection between the mounting plate rack and the embedded box and disassembling the mounting plate rack and the touch display screen from the inside of the embedded box. The refrigerator comprises a refrigerator body and the door.

The invention relates to a glass door and window mounting method. The glass door and window mounting method uses a glass window frame mounting device. The glass window frame mounting device comprisesa base, a lifting unit, a supporting unit and a nail shooting unit, wherein the lifting unit is arranged at the upper end of the base, and the supporting unit is arranged at the right end of the lifting unit; and the nail shooting unit is arranged at the right end of the supporting unit. According to the glass door and window mounting method, by means of the structural design that movement, contraction and adjustment can still be achieved after contact, when the length-to-width ratio of a frame is different and one end of a fixed end makes contact with the inner wall of the frame, the other end of the fixed end can still be fed to fix the other end of the frame, so that the frame is completely fixed; and according to the glass door and window mounting method, through the streamlined working processes of nail taking, edge changing, nail shooting and the like, the nail shooting operation is completely automatic and streamlined, so that the problem that the frame falls off when the nail shooting operation cannot be manually carried out is solved.

A vehicle door structure preventing a slide door from coming out of a swing door when the swing door is opened. The vehicle door structure (1) includes a lock mechanism (40) locking the slide door (6) in a fully closed or open position. The lock mechanism (40) includes a portion to be locked (50) provided to a guided body (18), a first locking portion (60) arranged at a position that corresponds to the portion to be locked (50) when the slide door (6) is in the fully closed position, and a second locking portion (70) arranged at a position that corresponds to the portion to be locked (50) when the slide door (6) is in the fully open position. The portion to be locked (50), in the fully closed position or the fully open position, protrudes toward the first locking portion (60) or the second locking portion (70) and is locked by the first locking portion (60) or the second locking portion (70). The second locking portion (70) protrudes toward the portion to be locked (50) when the swing door (70) is opened.

The invention relates to a snap-through rotary switch. A locking device is arranged on a moving contact frame, a locking structure is arranged on a middle seat; an unlocking device and an elastic assembly are arranged between a movable frame and the moving contact frame; when a rotary assembly rotates within a threshold value range, the moving contact frame is locked on the middle seat under cooperation of the locking device and the locking structure, and the movable frame moves relative to the moving contact frame to compress the elastic assembly so that the elastic assembly can store energy; when the rotary assembly rotates to a threshold value point, the unlocking device drives the locking device to break away from the locking structure, and the moving contact frame moves under the energy storage action of the elastic assembly to drive a moving contact to make contact with or break away from a static contact. The elastic assembly serving as an energy storage device is matched with the locking device and the unlocking device, the moving contact can rapidly break away from or make contact with the static contact, and therefore the contacting force of the moving contact and the static contact of the snap-through rotary switch is stable.

The invention provides an aviation hydraulic elevator, which comprises a bottom machine frame, the top of the bottom machine frame is supported by a scissor fork lift mechanism and provided with a topoperating platform; the scissor fork lift mechanism is provided with a hydraulic cylinder assembly for jacking the top operating platform; a cylinder mechanical lock mechanism for self-locking the hydraulic cylinder assembly is installed on the hydraulic cylinder assembly; the hydraulic cylinder assembly is connected with a hand pump structure and provides hydraulic power to drive the jacking action of the hydraulic cylinder assembly. The lift cylinder structure of the elevator adopts pure mechanical locking device; when an oil pipe suddenly bursts or the cylinder bottom suddenly falls off, the piston rod can be mechanically locked to avoid a sudden fall of the platform and cause a safety accident.

The invention discloses a wheel hub manufacturing device and method, and aims at being capable of effectively simplifying a wheel hub manufacturing technology and effectively improving the properties of a wheel hub. The wheel hub manufacturing device comprises a base, the base is provided with guide posts, a fixing plate is fixed to the guide posts, and the guide posts are sleeved with a movable plate which is located between the base and the fixing plate. The base is provided with a bottom mould and side moulds and the side moulds are arranged around the bottom mould. The movable plate is connected with a push rod of a first hydraulic cylinder. The movable plate is provided with a first through hole and second through holes, and a sleeve is arranged on the lower side of the movable plate. The fixing plate is provided with a second hydraulic cylinder, and a push rod of the second hydraulic cylinder penetrates through the first through hole and is connected with a plunger chip mold core. The plunger chip mold core is located in the sleeve and corresponds to the bottom mould. The fixing plate is provided with third hydraulic cylinders, the push rods of the third hydraulic cylinders penetrate through the second through holes and are connected with a flanging mould assembly which is arranged on the periphery of the plunger chip mold core in a sleeving mode and comprises flanging moulds. According to the embodiment of the invention, the wheel hub manufacturing device and method can be applied in manufacturing of wheel hub made of aluminium alloy, magnesium alloy, carbon fiber, a composite material and other materials.

The invention provides an anti-dust device, a connector assembly and a method for positioning an optical fiber in a straight-through type quick connector. The anti-dust device comprises a base portion, two cantilevers approximately and parallelly extending from two opposite ends of the base portion and used for enabling the anti-dust device on an optical fiber connector, a sleeve extending from the base portion between the cantilevers and used for accommodating a plug core of the optical fiber connector when the anti-dust device is installed on the optical fiber connector. The sleeve comprises a positioning face formed at the bottom of the sleeve, wherein a certain distance is reserved between the positioning face and the end of the optical fiber plug core to enable the end face of the optical fiber extending out of the plug core to be rightly in contact with the positioning face so as to achieve optical fiber positioning when the anti-dust device is installed on the optical fiber connector. The sleeve of the anti-dust device can accurately position the optical fiber extending out of the plug core of the optical fiber connector.

Disclosed is a fastener provided with a male member and a female member. The female member has: a flange part provided with an insertion hole; a cylindrical part that is formed from an elastically deformable member and extends downward from the flange part; and a slit provided in the cylindrical part. The male member has: a head; a shaft that extends downward from the head and, upon insertion into the cylindrical part of the female member, spreads said cylindrical part open; and a leg part provided with a latch part that, upon insertion into the cylindrical part of the female member, protrudes outward from the slit in the cylindrical part, and which expands outward from the bottom of the shaft to the top thereof. By inserting the cylindrical part of the female member into attachment holes in an attaching member and an attached member, and then pushing the male member into the insertion hole in the female member, the cylindrical part is spread outward, thus abutting against the rims of the attachment holes in the attaching member and the attached member, and fixing the attaching member and the attached member to each other; also, the latch part of the aforementioned leg part is made to protrude outward from the aforementioned slit, thus abutting against the rims of the attachment holes in the attaching member and the attached member, and fixing the attaching member and the attached member to each other.

The invention aims at providing a webbing retractor capable of realizing miniaturization of a rotation body. Wherein, a V-shaped gear is connected at a spool in a mode of capability of rotation with the spool, pawls ELF are disposed at the V-shaped gear. When the V-shaped gear rotates in the pulled-out direction and a W paw is relatively displaced with respect to the V-shaped gear, a lock piece limits rotation of the spool in the pulled-out direction. Additionally, via rotation of the V-shaped gear in a retraction direction, an engaging portion of ratchet teeth is engaged with the W pawl, and the pawls limit displacing of the W pawl with respective to the V-shaped gear caused by resulting from rebound of the stopping of the retraction of the webbing. Herein, due to rotation of the V-shaped gear in the pulled-out direction, the engagement of the engaging portion with the W pawl is released as the engaging portion is displaced toward a radial direction inside of the V-shaped gear. Therefore, miniaturization of the V-shaped gear can be realized without disposing of a space for displacement of the engagement portion at the engagement position of the W pawl and the engagement portion toward the radial external side of the V-shaped gear.

A pedal lock control device for a working vehicle has a motor drive device for driving a hydraulic travel motor according to the amount of operation of a travel pedal, a lock device for locking (fixing) the travel pedal to an operated state, an instruction device for instructing, according to operation of the operator, locking of the travel pedal by the lock device and release of the lock, a first detection device for detecting a first signal change generated by lock release operation which is operation reflecting the intention of the operator releasing the lock device and which is operation different from lock release operation by the instruction device, a second detection device for detecting a second signal change different from the first signal change and generated by lock release operation which is operation reflecting the intention of the operator releasing the lock device and which is operation different from lock release operation by the instruction device, and a lock control device for releasing lock of the lock device when at least either of the first and second detection devices detects lock release operation with the travel pedal locked by the lock device.

The invention belongs to the field of electric power auxiliary tools, and particularly relates to a 10kV power distribution cabinet isolation baffle opening tool using a lever principle. The 10kV power distribution cabinet isolation baffle opening tool comprises a lever body and is characterized in that one end of the lever body is provided with a ratchet bin, the other end of the lever body is provided with an unlocking pressure plate, the lever body at one side of a ratchet is internally provided with a pawl and a spring, the head part of the pawl is contacted with the ratchet, the tail part of the pawl is connected with one end of the spring, the other end of the spring is pressed against the internal part of the lever body, the tail part of the pawl is provided with a pull wire, the other end of the pull wire is connected with the unlocking pressure plate, a rotating shaft of the ratchet is externally connected to a first connecting shaft, the other end of the first connecting shaft is provided with a pull rod, the other end of the pull rod is provided with a first ferrule, and the external part of the lever body is provided with a second ferrule. The 10kV power distribution cabinet isolation baffle opening tool is ingenious in structure and convenient to use, and the lever body can be manufactured to meet safety requirements in length very easily. In addition, the 10kV power distribution cabinet isolation baffle opening tool is small in size, has fastening and locking functions, and does not occupy too much space inside the cabinet, thereby being convenient for the staff to work in the cabinet.

The invention discloses a Chinese herbal piece cutting-off machine, and belongs to the field of cutting-off machines. The Chinese herbal piece cutting-off machine comprises a first box and a second box. The second box is fixedly connected to the top wall of the first box through supporting rods. The supporting rods are slidably connected with a transverse plate through sliding grooves. A cutter isconnected to the bottom of the transverse plate. A rack is fixedly connected to the bottom of the transverse plate. A discharging mechanism is connected to the end, away from the transverse plate, ofthe rack. A locking mechanism corresponding to the discharging mechanism is connected to the side wall of the first box. A cam mechanism is connected to the second box. The output end of the cam mechanism abuts against the transverse plate. A collection box is connected into the first box. A feeding port corresponding to the collection box is formed in the top of the first box. The Chinese herbalpiece cutting-off machine can replace manual work to cut off medicinal materials and has a good discharging effect.

The invention relates to a hanging ladder and provides a telescopic pedal type hanging ladder aiming at the defect that the conventional hanging ladder is easily collided with a material pile or raised ground so as to be damaged. The telescopic pedal type hanging ladder comprises a hanging ladder, wherein the hanging ladder comprises a left upright post and a right upright post positioned on two sides, a plurality of stages of pedals which are vertically arranged at intervals and are fixedly arranged between the left upright post and the right upright post, a return spring and a mounting device used for mounting the pedal type hanging ladder, wherein the mounting device comprises a guide device for guiding in the vertical direction; the hanging ladder comprises a sliding device which is arranged on the guide device in a sliding mode and drives the left upright post and the right upright post to slide up and down in the vertical direction; and the return spring provides an upward elastic force for the sliding device, so that the hanging ladder slides upwards without an external force. When the telescopic pedal type hanging ladder is not used, the hanging ladder can be lifted upwards, the height between the bottommost pedal and the ground is increased, and the hanging ladder is prevented from being easily collided with a material pile or raised ground so as not to be damaged.

The invention discloses a fishable free falling tubing plug. The improvement is performed on the basis of a ZL201420608036.3 patent, the deformation of an expansion rubber tube is produced after being pressed and the diameter of the expansion rubber tube is increased through the pressure medium energy in an underground tubing, a reliable sealing structure is formed between the expansion rubber tube and an inner hole of the tubing, and the effect plugging is performed on the tubing. The sealing of the plug cannot be affected by the reduction of the external pressure due to the characteristic of the band direction sliding of an open thread locking block. The anchoring with the wall of the inner hole of the tubing is implemented due to the matching of an inclined wedge type slide column and a sliding block slip. Only a fishing head needs to be pulled upward to open a pressure channel when the fishing is required, a protection pressure sleeve and the sliding block slip are driven by the fishing head to move upward relative to the slide column through an underground pressure medium, and accordingly the unlocking is implemented. The effective plugging can be performed on the tubing and the fishable free falling tubing plug can be taken out of the tubing conveniently.

The invention provides a three-axis aircraft with high maneuverability. The three-axis aircraft comprises a fuselage, rotors and a power device driving the rotors to rotate. The rotors include the first rotor, the second rotor and the third rotor. The first rotor and the second rotor are symmetrically mounted on the two sides of the fuselage and near the front end of the fuselage. The third rotoris mounted at the position near the back end of the fuselage. A deflection driving device is mounted on the fuselage to drive the third rotor to obliquely rotate around the axis of the length direction of the fuselage. The first rotor and the second rotor have the same diameter, and the diameters of the first rotor and the second rotor are greater than the diameter of the third rotor. The maneuverability of the three-axis aircraft is advantageously improved.

The invention relates to an electronic cigarette needing to be opened with an ejector pin. The electronic cigarette comprises a body, a cover, a clamping position part and a clamping part; the side wall or the end wall of the body is provided with a liquid injection hole which is communicated with a liquid storage part arranged in a cavity of the body, the cover is arranged on the liquid injection hole in a covering mode, the clamping position part is arranged on the body, the clamping part is arranged on the cover, and the clamping position part and the clamping part are mutually clamped to enable the cover to be fixed on the body; the electronic cigarette further comprises a pushing part and the ejector pin, the pushing part is arranged between the clamping part and the cover or at one end of the clamping position part, the ejector pin ejects the pushing part in an abutting mode to enable the clamping part to be capable of moving relative to the cover or enable the clamping position part to be capable of moving relative to the body, and therefore clamping between the clamping position part and the clamping part is relieved. According to the electronic cigarette needing to be opened with the ejector pin, the structure is simple, and the cover is not prone to be opened by a child.

Provided is a connector having a locking mechanism and a separate front end, realizing miniaturization, and improving assembling capability and extracting operability. In the connector (1), two arms form the arm of the locking mechanism (30). One end of the arm portion (31) is fixed to separating portion (11) while one end of the arm portion (32) is fixed to the separation portion (12). A connecting portion is utilized for connecting the other end of the arms. When the connector is installed to the insertion portion of the connector of the coupling connector (80), the separating wall arranged at the insertion portion of the connector of the coupling connector enters between the separating section (11) and the separating section (12) and enters between the arm portion (31) and the arm portion (32) as well. According to the structure, the arm portions (31, 32) can be extended. Moreover, a clamping operation section (36) can be arranged at the other end portion of the arm portions.

The invention discloses a toppling preventing base for a robot. The toppling preventing base comprises a base. A partition plate is arranged in the base, the partition plate divides the interior of the base into an upper cavity and a lower cavity, distance measuring sensors are fixed to the two sides of the bottom of the lower cavity, and a rack extending in the length direction of the base is arranged on the upper end face of the partition plate; a counterweight ball is arranged in the middle of the rack, a groove is formed in the bottom of the counterweight ball, a driving motor is arrangedin the groove, and a gear is connected with a rotary shaft of the driving motor; the lower end of the gear extends out of the groove and meshes with the rack, a locking rod is clamped into a meshing point of the gear and the rack in a clearance mode, the locking rod is fixed to a locking plate, and the locking plate is fixed to a piston rod of a locking air cylinder; and a cavity is formed in therack, two counterweight plates abutting against each other are movably connected with the middle of the cavity in an inserted mode, and the counterweight plates are fixed to a piston rod of an adjusting air cylinder through connecting plates. According to the toppling preventing base for the robot, the occurrence probability of the situations of robot rollover and toppling can be effectively decreased.

The invention relates to a permanent magnetic circuit breaker closing lock catch and a tripping device, in particular to a closing lock catch and a tripping device which are applicable to a high-voltage permanent magnetic circuit breaker. The permanent magnetic circuit breaker closing lock catch and the tripping device are characterized in that: a mainshaft is provided with a lock catch connecting lever, a closing connecting lever and an opening connecting lever; the latching connecting lever is provided with a lock catch idler wheel; the closing connecting lever is provided with a closing idler wheel; the opening connecting lever is provided with an opening idler wheel. A tripping cam and an opening cam are respectively arranged on a square shaft; the tripping cam can be engaged to a closing fastener plate; the opening cam can be engaged to the opening idler wheel; the closing fastener plate is arranged on a fastener plate shaft, can be engaged to the latching idler wheel and the position thereof is restricted by a left position limit screw; the opening plate is fixed on a closing fastener plate, connected with an excitation tripping device and provided with a recovery spring. The permanent magnetic circuit breaker closing lock catch and the tripping device of the invention have the advantages of simple, compact and reasonable structure, being applied to high-voltage permanent magnetic circuit breakers, and realizing the closing fastening and tripping of the high-voltage permanent magnetic circuit breaker so as to avoid damaging the power system due to the closing rebound phenomenon of the circuit breaker.

The invention discloses a micro clamping finger air cylinder and a drive method thereof. The micro clamping finger air cylinder comprises a cylinder body, a piston body, clamping finger sliding seatsand clamping fingers. The piston body is arranged in the cylinder body and is provided with motion rods perpendicular to the surface of the piston body. The lower ends of the motion rods are fixed tothe piston rod, and the upper end of each motion rod is of a bevel structure. A reverse bevel structure corresponding to the bevel structure of the corresponding motion rod is arranged at the lower end of each clamping finger sliding seat, fixed holes are formed in the clamping finger sliding seats, the clamping finger sliding seats are connected to guide shafts in a sleeving manner through the fixed holes, and therefore the clamping finger sliding seats are driven by the motion rods to move on the guide shafts. The clamping fingers are fixedly arranged at the upper ends of the clamping fingersliding seats and move along with the clamping finger sliding seats, and then articles are clamped and fixed. The air cylinder is simple in structure and convenient to use, the stress direction is changed completely through the bevel structures, and therefore interconversion, between the vertical direction and the horizontal direction, of the stress direction of components is achieved.

The invention discloses a desk-type electric iron with a lock catch fixing device. The electric iron comprises an iron body, an iron baseboard and a desk body which is internally provided with the lock catch fixing device; a protrusion lip part is arranged at the front end of the iron baseboard; the lock catch fixing device comprises a lock catch mechanism, a desk body heat insulation board and an iron buckling mechanism; the lock catch mechanism comprises a lock catch push board, a lock catch push disc and a lock catch bracket; the lock catch push board is connected with the front end of the top of the lock catch push disc, the lock catch push disc is arranged above the lock catch bracket, screw hole fixing supports are arranged at the periphery of the lock catch bracket, slide grooves are formed in the left side and the right side of the lock catch bracket, and the lock latch push disc slides front and back along the slide grooves; the lock latch push disc is provided with a limiting protrusion board located above the protrusion lip part; the iron buckling mechanism comprises a heelpiece baffle arranged at the rear end of the desk body, the heelpiece baffle is provided with a fixed clamping block, and a fixed groove is formed in the rear portion of the iron. The iron can be effectively fixed to the desk body, the effect of locking and placing the iron and unlocking and taking out the iron is good, and the safety effect is effectively improved.