38 results about "Round back" patented technology

A probe for engaging a conductive pad is provided. The probe includes a probe contact end for receiving a test current, a probe retention portion below the contact end, a block for holding the probe retention portion, a probe arm below the retention portion, a probe contact tip below the arm, and a generally planar self-cleaning skate disposed perpendicular below the contact tip. The self-cleaning skate has a square front, a round back and a flat middle section. The conductive pad is of generally convex shape having a granular non-conductive surface of debris and moves to engage the skate, whereby an overdrive motion is applied to the pad causing the skate to move across and scrub non-conductive debris from the pad displacing the debris along the skate and around the skate round back end to a position on the skate that is away from the pad.

The invention discloses a wafer whose back side is coated with adhesive through adopting the silk screen printing and a process for preparing a back electrode of the wafer, the preparation process comprises the following five steps: preparing a wafer, and keeping the wafer flat in the subsequent steps, adopting the silk screen printing to coat the adhesive on the back side of the wafer and drying, arranging the wafer which is coated with the adhesive on a scribing blue film, separating, adhering and solidifying the separated wafer. The process eliminates the flanging phenomenon which easily occurs during the preparation of the wafer, the dosage of bonding slurry is reduced by one-third, the cost of the bonding slurry is greatly reduced by about ten percent, and the flatness of the coating surface of a back electrode of the chip is guaranteed, a scribing is easily cut, the intensity of the combination between the chip and the electrode during the eutectic welding is guaranteed, and the production time and cost are greatly saved. The wafer whose back side is coated with the adhesive of the invention can be stored for a long time, and the control to the quality of the stock is improved.

A probe for engaging a conductive pad is provided. The probe includes a probe contact end for receiving a test current, a probe retention portion below the contact end, a block for holding the probe retention portion, a probe arm below the retention portion, a probe contact tip below the arm, and a generally planar self-cleaning skate disposed perpendicular below the contact tip. The self-cleaning skate has a square front, a round back and a flat middle section. The conductive pad is of generally convex shape having a granular non-conductive surface of debris and moves to engage the skate, whereby an overdrive motion is applied to the pad causing the skate to move across and scrub non-conductive debris from the pad displacing the debris along the skate and around the skate round back end to a position on the skate that is away from the pad.

Provided is an electrically powered wheelchair capable of stably walking on a staircase and a flat ground. The electrically powered wheelchair consists of a seat, a controller, a frame, a front wheel, a similar Archimedes helical line impeller conversion mechanism, a transformable back wheel, a motor and a small front wheel auxiliary caterpillar band. The similar Archimedes helical line impeller conversion mechanism consists of a planet wheel mechanism, a clutch and a telescopic support rod. The planet wheel mechanism consists of four planet gears, a sun wheel and a planet carrier and is connected with the transformable back wheel. The transformable back wheel consists of four sections of circular arc wheel flanges capable of respectively being screwed open towards the outer sides of the wheel flanges and arc-shaped rod hubs, wherein the four sections of circular arc wheel flanges form a complete round back wheel flange, and the circular arc wheel flanges and the arc-shaped rod hubs form four wheel blades completely identical in structure. Each arc-shaped rod hub is fixedly connected with the corresponding planet wheel and connected with the planet carrier through a hinge. The electrically powered wheelchair capable of stably walking on the staircase and the flat ground is simple in structure, high in energy efficiency, stable in motion, conformable in riding and capable of being applied to daily family life of disabled people and old people.

The invention provides a cluster head selection method, a cluster head selection system and a multi-hop network. The cluster head selection method comprises that each node sends its own energy information to a base station; the base station calculates network average energy and a cluster head selection threshold value of this round according to the energy information sent by each node and transmits the network average energy and the cluster head selection threshold value of this round back to each node; each node determines whether to enter a dormant state or not in the cluster head selection process of this round according to a first ratio of the current self energy to the network average energy; the nodes not entering the dormant states generate random numbers between 0-1 and judge whether the ratios of the random numbers to the first ratios are less than a threshold value or not; and if the ratios of the random numbers to the first ratios are less than the threshold value, the nodes are selected as the cluster head nodes. According to the cluster head selection method, the cluster head nodes are selected according to the surplus energy, and the energy distribution of the whole network is more uniform; moreover, through adoption of a dormant mechanism related to the surplus energy of the nodes, the survival time of the nodes is prolonged; and the survival time of the whole network is prolonged.

An integral transverse flange for a duct includes a first upturned portion extending substantially perpendicularly from a duct wall of the duct. The flange further includes a second portion bent rearwardly from the first upturned portion, and a third return portion turned toward the duct wall and rounded back toward the first upturned portion from the second portion. A fourth L-shaped portion extends from the third return portion, the L-shaped portion having a first arm arranged adjacent to and in close relation with the second portion and a second arm arranged adjacent to and in close relation with the first upturned portion. A bead is formed in the first upturned portion.

The invention relates to a movable cover board carding device for a cotton carding machine, which comprises a cylinder, a guide rail, a movable cover board, a driving wheel, a driven wheel, a tensioner and a transition wheel. The guide rail is fixedly arranged on a surface plate of the cylinder; the movable cover board comprises a cover board skeleton, cover board hinge pins, fixing blocks and bearing rolling sleeves; the cover board hinge pins are fixedly connected to both ends of the bottom of the cover board skeleton; the cover board hinge pins are sleeved with the fixing blocks; hinge pin holes on the fixing blocks are provided with limiting grooves; the positions of the two limiting grooves are staggered along the axial directions of the hinge pins; the cover board hinge pins in the limiting grooves are sleeved with the bearing rolling sleeves; the bearing rolling sleeves are in rolling contact with the guide rail; the driving wheel and the driven wheel are arranged in round backs at both ends of the movable cover board; and the tensioner and the transition wheel are arranged at the horizontal end of the movable cover board. Due to adoption of the structure, the distance between the movable cover board and the cylinder is stable; the movable cover board carding device is reliable to operate; maintenance cost is reduced; labor intensity is reduced; the device has superior stability in the actual operating process; a small number of neps and cotton impurities in generated cotton slivers are generated; and the cotton slivers have high fiber quality.

The invention provides processing equipment for a curve component and a processing method of processing equipment. The processing equipment is characterized by comprising a rack, wherein a longitudinal moving device and a transverse moving device are arranged on the rack; a transverse moving bracket is arranged on the transverse moving device; a drive device, an active device, a first driven device and a second driven device are arranged on the transverse moving bracket; the drive device is connected with the active device; one side of the active device is equipped with the first driven device; the other side of the active device is equipped with the second driven device; the active device drives the driven device to rotate through a component; and a sanding device for a cutting device isfurther arranged on the rack. The processing equipment for the curve component provided by the invention effectively solves the component processing problems that Ming-style round-backed armchair handrails are arc-shaped, sections are required to be normally circular and diameters are inconsistent, and can process the components with circular or oval sections, the components of different diametersand the components with arc-shaped or S-shaped side surfaces.

The invention relates to a floating type double-layer back plate brake pad which is characterized by comprising a pad thick back plate, a pad thin back plate, a dovetail element, a plurality of pad friction blocks and a plurality of elastic pads. The pad thick back plate is of an arc-shaped semi-sole structure; the elastic pads are provided with spherical supporting faces; the pad friction blocks are provided with spherical supporting faces and fastening connecting elements; the elastic pads enable the friction blocks to be adjusted in an elastic mode in the vertical direction relative to the pad thick back plate and the pad thin back plate; the spherical supporting faces of the elastic pads and the spherical supporting faces of the friction blocks can rotate; the friction blocks are cylindrical, and mutual positioning of the friction blocks in an installation plane is achieved in the circumference direction by means of three evenly distributed convex keys on a round back plate and three evenly distributed key grooves in the pad thin back plate. Compared with an existing structure, in braking of a train, the maximum contact friction area can be obtained due to pads and a brake disc, braking is stable, the functions of damping, shock absorbing, denoising, heat dissipation and the like are achieved, the friction blocks and the elastic pads can be replaced, train operation cost is reduced, and the floating type double-layer back plate brake pad can be widely applied to braking systems of high-speed trains.

The invention provides a bed on which a patient and so forth can take a posture for sitting on a chair, in particular, a bed for allowing the posture for sitting on a chair to be taken, effectively usable even by those having the back in the shape of the round back, Kyphosis or the like.

The invention relates to the technical field of medical equipment, in particular to a nail in femoral marrow, which comprises a hollow-structure nail body made of 002Cr19Ni13Mo3. The front end of the nail body is in a contracting shape, a spiral blade hole and two round back-locking nail holes arranged on two sides of the spiral blade hole are respectively arranged on a back end section of the nail body, at least two front-locking nail holes are arranged on the front end section of the nail body, the tube diameter of the front end section of the nail body is smaller than that of the back end section of the nail body, and three circumferentially-equant longitudinal grooves are arranged on the front end section of the nail body. The nail in femoral marrow is locked through a single hole, easy to operate, capable of effectively avoiding cleavage of femoral necks in operation and easy to reset by being matched with a spiral blade and a fixed screw, can meet requirements for combination between femoral necks and femoral near-end fracture positions, and effectively reduces further damage on fracture between thighbones and thighbone ankles.

The invention discloses a method for improving the photoperiod sensitivity of a tropical maize germplgasm yellow grain Tuxpeno. The method comprises the following steps: improving the photoperiod sensitivity of a tropical maize germplgasm yellow grain Tuxpeno B.P.C.15 by using a temperate specially-early mature dent maize germplgasm LM2, adopting a breeding selection method including processes of performing hybridization, mixed pollination, two-round back-crossing and continuous three-generation selfing, performing growth period and plant height selection as well as combining ability early generation test, and synchronously performing photoperiod sensitivity identification in a plurality of places in a tropical zone, a subtropical zone and a temperate zone, and especially continuously performing two rounds of back-crossing by taking the temperate specially-early mature dent maize germplgasm LM2 as a back-crossing parent so as to ensure that the proportion of a temperate maize germplasm can be increased, and a maize selfing line which takes a temperate maize germplasm background as the main and integrates the tropical germplasm characteristics and temperate germplasm advantages can be obtained. By adopting the method disclosed by the invention, the problem of photoperiod sensitivity commonly existing in a process of planting the tropical maize germplasm in a temperate area can be effectively solved; and the method also has important significance in promoting the northward migration of maize varieties in the tropical zone and the subtropical zone in China.

Garage Door Track Lock to prevent overhead opening garage door from opening. Lock with Z Flange is placed securely through garage door vertical track on one side with back plate and shackle inserted through lock cylinder on opposing side and is securely in place above roller. When the lock secured in this way it prevents garage door opening. Lock cannot be cut with bolt cutters or pried off. Garage Door will be able to open when lock is unlocked with a key. The lock uses a Z Flange welded on Master Lock M46XKAD (or equivalent) and a round back plate is welded to the Master Lock shackle.

The invention provides a copying mechanism and a method for manufacturing a curved component through same. The copying mechanism comprises a rack and a control box, wherein a cutting device and a copying die device are arranged on the rack; a longitudinal moving device and a transverse moving device are arranged on the rack; at least one first active device, a second active device, a first slave device and a second slave device are arranged on the transverse moving device. According to the copying mechanism of a woven curved component, the problems of processing of arc-shaped components, components with regular circular sections, and components with different diameter, such as armrests of Ming style round-backed armchairs, can be effectively solved; one sample can be manufactured as a model for realizing massive copying of the component components with circular or elliptic sections, the components with different size, and the components with arc-shaped or S-shaped side surfaces; and the copying mechanism fills the gap of wood-working machines.

The invention provides a processing method for a minitype hardcover round back book, which comprises the following processes: matching a section; placing the section in an adhesive binding machine; conducting back milling and groove pulling on the section, wherein the groove depth produced by the groove pulling is 0.2-0.5 mm; brushing certain glue on a spine of the book being subjected to the back milling and the groove pulling, wherein the brushing of glue is conducted in twice, the thickness of the first glue is 0.35-0.55 mm, and the thickness of the second glue is 0.5-0.75 mm; heating and rounding formation, wherein the heating temperature is 38 DEG C, the heating time is 32 S, and then the book is formed by rounding; finally, conducting paper bottom gauze packaging. through the adoption of the method, the minitype book is allowed to be kept to be bound firmly during round back threadless deluxe binding, so that pages are not fell apart; meanwhile, the binding of a plurality of minitype books can be conducted by one same perfect adhesive binding machine, so that the work efficiency can be improved and the cost is saved.

The invention provides a material breakage emergency device of a belt material processing production line, which is arranged between a material frame and a subsequent processing device during usage and is used for conveying the belt material to a processing device after the subsequent processing device tows the belt material to pass through; the device comprises a detecting device used for detecting whether the belt material is in a state, a pressing device used for pressing the belt material in the case of material breakage and a material storage device, which are sequentially arranged during usage; the material storage device comprises a front wheel set and a rear wheel set, which are used for driving the belt material to repeatedly round back and forth, wherein the front wheel set is fixedly arranged, and the rear wheel set is movably arranged; and when a coiled belt material is used up and necessary to be changed or a breakage occurred at the middle of the belt material, the production line needs no pauses, thereby greatly reducing the product rejection rate and improving the production efficiency.

The invention discloses a detachable round-back chair. The detachable round-back chair comprises a seat cushion, front chair legs, rear chair legs, a chair back and fasteners, wherein the seat cushion is connected with the front chair legs, the rear chair legs and the chair back; connecting structures are arranged on the seat cushion, the front chair legs, the rear chair legs and the chair back, and the connecting structures are mounted together through the fasteners. During the mounting process of the detachable round-back chair, the original structures of the parts are not damaged, after disassembly of the detachable round-back chair, the original shape can be recovered, thus the repeated assembly and disassembly can be realized, the occupied volume is reduced, the packaging cost is saved, and storage and carrying are facilitated. The invention further provides a mounting method of the detachable round-back chair.

The invention discloses a rotary bookcase which comprises a main bookcase body rotationally arranged on a wall and a sliding device for driving the main bookcase body to rotate, wherein the lower part of a rotary shaft of the main bookcase body is fixed on an iron plate; the main bookcase body comprises a round back plate, a plurality of annular partition boards and a plurality of radial partition boards, the back side of the round back plate faces the iron plate, the annular partition boards are fixed on the front side surface of the round back plate like concentric circles, the radial partition boards are connected between the annular partition boards respectively to form multiple book cells, the round back plate and the annular partition boards take the rotary shaft as the center, the radial partition boards are radially arranged by taking the rotary shaft as the center, and the rotary shaft and the round back plate are connected through bearings. The bookcase can rotate on the wall, books can move circularly from top to bottom or from bottom to top along with rotation of the bookcase, a user can rotate the bookcase to enable a required book to be rotated to the bottommost position when needing to take the book, the bookcase is convenient to use, and the wall is used sufficiently.

The invention discloses a wafer whose back side is coated with adhesive through adopting the silk screen printing and a process for preparing a back electrode of the wafer, the preparation process comprises the following five steps: preparing a wafer, and keeping the wafer flat in the subsequent steps, adopting the silk screen printing to coat the adhesive on the back side of the wafer and drying, arranging the wafer which is coated with the adhesive on a scribing blue film, separating, adhering and solidifying the separated wafer. The process eliminates the flanging phenomenon which easily occurs during the preparation of the wafer, the dosage of bonding slurry is reduced by one-third, the cost of the bonding slurry is greatly reduced by about ten percent, and the flatness of the coating surface of a back electrode of the chip is guaranteed, a scribing is easily cut, the intensity of the combination between the chip and the electrode during the eutectic welding is guaranteed, and the production time and cost are greatly saved. The wafer whose back side is coated with the adhesive of the invention can be stored for a long time, and the control to the quality of the stock is improved.

The invention relates to a lower cavity and a cavity for a food rubbish treatment machine. The lower cavity comprises a cylindrical side wall and a lower round back cover which are connected into a whole, wherein the middle of the back cover is provided with a shaft hole; the side wall of the shaft hole is provided with a discharging pipe; the inner surface of the discharging pipe is connected with the bottom surface of the back cover into a whole through a transition curved surface; and the axis of the discharging pipe is arranged approximately parallel with the tangential direction of the side wall circumference surface. The cavity for the food rubbish treatment machine comprises an upper cavity and the lower cavity, wherein the upper and lower cavities are connected through a fastening piece and a sealing piece; the lower cavity comprises the cylindrical side wall and the lower round back cover which are connected into a whole; the middle of the back cover is provided with the shaft hole; the side wall of the shaft hole is provided with the discharging pipe; the inner surface of the discharging pipe is connected with the bottom surface of the back cover into a whole through the transition curved surface; and the axis of the discharging pipe is arranged approximately parallel with tangential direction of the side wall circumference surface. By the structure design of the lower cavity and the cavity, resistance is reduced, thereby avoiding blocking phenomenon.

The invention discloses a method for hotly rounding the middle back of an outer shell of a round back photo album. The method is characterized by comprising the following steps: (1) mounting, namely uniformly applying a layer of glue to the inner surface of the finished outer shell in an environment with the relative humidity of 60%-80% and the temperature of 20-25 DEG C, mounting a layer of lining paper on the glue, and controlling the humidity of the outer shell after mounting the lining paper to be 18%-20%; (2) pressing a round back, namely instantly arranging the middle back of the outer shell obtained in the step (1) into a base of a hot rounding mould supported by a soft buffer material, applying a pressure of 20-35 kgf to the hot rounding mould with the outer shell through a pressing head on hot rounding equipment to enable the middle back of the outer shell to form the round back, and meanwhile, setting the temperature of the pressing head to be 160-190 DEG C, controlling the action time of the pressing head to be 4-6 s and heating and shaping the round back formed by stamping to obtain a smoother round back. The method has the advantage that the smoother round back can be easily obtained by the method.