763 results about "Double edge" patented technology

A PCD cutting element, which in operation (and as it wears to a worn condition) presents at least two cutting lips to the material being cut. One particularly advantageous use of this new PDC cutting element is as cutting elements for earth boring drill bits.

An endoscopic tool utilizes a fiber optic system for illuminating and imaging ligaments or other tissue which are to be cut. Illumination and imaging is performed above a lateral opening at the distal end of a probe that is inserted into an incision point. Preferably, a two edged blade which can be moved in both the distal to proximal direction and the proximal to distal direction is selectively deployable from of the lateral opening at the distal end of the probe. The endoscopic tool is small in size, and preferably includes a pencil grip with a button actuator for deploying the two edged cutting blade. A wire actuator that fits into a slot in the bottom of the deployable blade, can be nested with the fiber optic cable such that the cross sectional area of the probe is reduced. Alternatively, a tube concentric with the fiber optic cable can be used as the mechanism for actuating the blade or other device. The surgeon can observe cutting of the ligament or other tissue as he moves the endoscopic tool in either or both the forward or reverse direction on a display screen which is operatively connected to the fiber optic system. A retractor can be used in conjunction with the endoscopic tool to lift tissue where dissection is desired, and to function as a guide for the blade.

Synchronously stackable double-edge modulated pulse width modulation generators are disclosed. An example pulse width modulation generator includes a ramp generator to generate first and second ramp signals that interact to form a virtual ramp signal; and a comparator module coupled to the ramp generator configured to produce a pulse width modulated signal based on a comparison between the virtual ramp signal and an input signal.

A method and system for expanding the number of memory modules that can be coupled to a motherboard such as a server blade is presented. A stack of multiple Dual In-line Memory Modules (DIMMs) is formed using novel double-connector-edge DIMMs, which each have connector pins on their opposite edges. Alternatively, the double-connector-edge DIMM is used to couple the motherboard to a memory expansion card that has multiple single-edge pinned DIMMs coupled in a “daisy-chain.”

Disclosed is a fine resolution pulse width generator for use in a multiphase pulse width modulated voltage regulator. The fine pulse width is generated by first generating a pulse with a coarse pulse width and one or more delayed replicas thereof. Then, digitally controlled analog interpolators are used to generate the fine resolution pulse width pulse by interpolating among the coarse pulse width pulses. Both single edge and double edge modulation embodiments are disclosed providing interpolation of just the trailing edges of the coarse pulses or both the leading and trailing edges, respectively. The disclosed fine resolution pulse generator uses counters, thermometer encoders and analog interpolators to achieve interpolation accurately by insuring that each interpolation step corresponds to an equal weight. Accuracy of the interpolation is defined by the linearity (i.e. how well the interpolation fits a best fit straight line) and monotonicity (i.e. how each step contributes a positive weight to the total).

The invention belongs to the technical field of image processing, provides a multi-view-point computing and imaging method, and aims to acquire accurate and high-precision depth information. According to the technical scheme, the multi-view-point computing and imaging method based on a speckle-structure optical depth camera comprises the following steps of: acquiring a depth map and a color map from human-machine interaction equipment Kinect of Microsoft; detecting the edge of the color map, and expanding gap information until the expanded gap covers the edge, which corresponds to the color map, near the conventional depth map; then performing double-edge filtration estimation on points on the edge of the gap according to depth information and color information; limiting the estimation process by virtue of edge information of the color map; and after the color map and the restored depth map are acquired, converting the depth map into a disparity map, and synthesizing any number of virtual viewpoint maps by a disparity map synthesis method combining a depth image and a color image. The multi-view-point computing and imaging method is mainly applied to image processing.

The invention discloses a multi-adaptive cutter head for a shield machine. The cutter head is provided with four cutter seats, three cutters directly fixed with the cutter head and movable cutters. Each cutter seat comprises a central double-edge hob seat, an exchangeable cutter seat, an inner and outer ring side-mounted cutter seat and a peripheral hob seat. The cutters include a peripheral scraper, an over cutter and a fishtail cutter. A main cutting surface of the cutter head is composed of a single-edge hob inlaid in the peripheral hob seat, a cutting blade in the inner and outer ring side-mounted cutter seat and the fishtail cutter; and a full section cutting cutter assembly is composed of a double-edge hob, a single-edge hob, a cutting blade, a peripheral scraper, an over cutter and a fishtail cutter. The multi-adaptive cutter head solves the problem that cutter replacement wastes time and labor, changes the traditional mounting mode to effectively prolong the service life of the cutter because the whole cutter works under a relatively smaller force, and can properly adjust the kind and the number of the cutters according to different geological conditions to effectively improve the adaptability of the cutter head of the shield machine and increase the efficiency and the quality of the tunnel shield.

A clock and data recovery circuit is disclosed and comprises a first gated voltage-controlled oscillator, a PLL unit, a phase-controlled frequency divider, a multiplexer, a matching circuit and a double-edge-triggered D flip-flop. The first GVCO receives a data signal and a reference voltage to generate a first clock signal and a second clock signal based on the data signal. The PLL unit receives a reference clock signal and generates the reference voltage to adjust the frequency of the first clock signal and the second clock signal at the vicinity of the predetermined frequency. The phase-controlled frequency divider receives and divides the first clock signal by N to output a third clock signal. The multiplexer controlled by a selection signal receives and outputs the second clock signal or the third clock signal. The matching circuit receives the data signal and the selection signal to match the delays therebetween. The double-edge-triggered D flip-flop comprises a data input terminal receiving the output signal from the matching circuit, a clock input terminal receiving the output signal from the multiplexer, and an output terminal outputting a recovered data signal.

The invention discloses a method for manufacturing a high-strength X100 steel grade spiral seam submerged arc welded pipe. The method comprises the following steps: uncoiling, flattening, edge milling, pre-springing, molding, inside welding, outside welding, pipe end belling, base metal layering ultrasonic examination, weld seam X ray inspection, hydrostatic test, weld seam ultrasonic inspection, pipe end chamfering and finished product inspection. In the technical steps of the preparation method, double edge milling process, pre-springing process and pipe end belling process are added so as to successfully solve the technical problems that the high-strength X100 steel grade spiral seam submerged arc welded pipe has poor molding stability, the welding joint performance cannot meet technical requirement and the like.

A static, double-edge-triggered flip-flop has an upper data path and a lower data path connected between a data input node and an output terminal. The upper path includes a switch connected to a first data loop, and the lower path includes a switch connected to a second data loop. The first and second data loops share a forward path having a data-inverting circuit. In addition, each loop has a feedback path which contains only one element in the form of a switch. However, no data-inverting circuit is included in either of the feedback paths. Advantageously, all the elements of the flip-flop may be constructed using MOSFET transistors implemented according to any one of a variety of semiconductor technologies. In more than one particularly advantageous embodiments, the flip-flop is constructed using a total of twelve transistors. Through this simplified two-loop design, operational efficiency is improved, low metastability is achieved and costs of manufacture are lowered, all while maintaining low power requirements.

A method and apparatus for making a stepped end on a tube of flexible material includes a tube slitting station having a slitting tool with double edge slitting blades penetrating through the tube to provide respective slits beside a first panel and beside a second panel, respectively; a first trimming station trimming a first panel of the tube to a first shortened length, a second trimming station trimming the side gussets to a second length, wherein the second length is longer than the first shortened length of the first panel; and an adhesive applying station applying adhesive on the tube above and below a fold line across the tube, wherein the tube is adapted to be folded along the fold line, and the adhesive material is adapted to form an adhesive to adhesive seal above and below the fold line while the tube is folded to provide a closed stepped end for a bag.

The invention relates to a manufacture method for preventing edge crack generated during low-carbon cold rolling of paper-thin strip steel, which sequentially comprises the steps: melting, plate blank heating, coarse milling, fine milling, cooling, coiling, acid washing, cold rolling, annealing and finishing and edge cutting, wherein the edge is not cut during steel coil acid washing, and the circular arc-shaped edge is maintained when the steel enters the cold rolling work procedure after the acid washing. The same plate temperature different in the plate blanking heating is lower than or equal to 40 DEG C, and the side pressure amount of the coarse milling is smaller than or equal to 50 mm. The final rolling temperature of the fine rolling is between 880 and 920 DEG C, an auxiliary vertical roller F1E of a machine frame F1 has the side pressure amount of 3 to 10 mm. The cooling is the laminar cooling of fast front section cooling with the cooling speed between 15 and 30 DEG C/s. The coiling temperature is between 650 and 710 DEG C. The single-edge cutting amount during the edge cutting is controlled between 5 and 7 mm, and the double-edge cutting amount is controlled between 10 and 14 mm. The thickness of cold rolling finished products of strip steel is between 0.15 and 0.45 mm, and the pressing rate is between 87.1 and 95 percent. The invention can solve the problem of edge crack of the paper-thin strip steel in the prior art.

The invention discloses an image restoration method based on a double-edge wave filter and margin deconvolution, comprising the following steps: (1) obtaining a restoration image with rings by adopting a standard RL algorithm to carry out higher iteration according to an image to be restored and a known fuzzy core; (2) adopting a double-edge wave filter to carry out filtering operation of the restoration image with rings to obtain the restoration image without rings; (3) carrying out the deconvolution on the restoration image without rings by the known fuzzy core to obtain a re-fuzzy image; (4) obtaining a restoration image detail by adopting the margin deconvolution by the re-fuzzy image obtained by the step (3) and the image to be restored, and adding the restoration image detail with the restoration image after eliminating ring to obtain a new restoration image containing ring; and (5) repeating the steps (2)-(4) for many times to obtain a final restoration image. The image restoration method can effectively inhibit middle and high frequency rings in the restoration image of the iterative algorithm, remain rich image details and obtain high-quality restoration images.

The invention provides a telescopic double-edged deep-hole boring cutter, aims to provide a deep-hole drilling boring cutter which has large length-diameter ratio, small self-excited vibration of a boring bar, reliable and stable feeding operation, no radial motion of a cutter arbor, and radial feeding of a cutting edge in a cutting process, and solves the problem that the deep-hole bottle cavity with large length-diameter ratio has large processing difficulty. The boring cutter comprises the boring bar which can extend to the deep-hole bottle cavity, wherein the central axis of the boring bar is provided with a through hole which runs through the central axis; a push rod (2) which is connected with a radial feeding device of the head of the boring bar is arranged in the through hole; the rear end of the push rod (2) is provided with a rotating handle; the rotating handle rotates a screw (5) and pushes the push rod (2) to do radial telescopic motion in the through hole of the boring bar; and the push rod (2) moves by way of pushing or pulling to drive the radial feeding device connected with the push rod and adjust the cutting edge of the double-edged boring cutter on a cutter block (3) to radically feed in the deep-hole bottle cavity.

The invention relates to a reciprocal rotary knife type material processor which is an improvement on a machining unit of kitchen appliances that make food of slurry, juice and paste and the like. The reciprocal rotary knife type material processor has universal working principle and can be arranged on various food processor at current to work or can be used similarly in other fields. The primary working part of the processor uses two concentrically reversed cutter shafts which are fixed with rotary cutters for machining. The machining rotary cutters can rotate at high speed positively and reversely under drive of a motor and transmission machinery, thereby overcoming the deficiency that the materials generate eddy to reduce the machining efficiency when the unidirectional rotary cutter works at high speed. The double-edged cutters have better machining effect in two rotary directions. The layered cutters and curved cutters can increase the working space. The invention solves the problems of the driving mode of dual-cutter shafts, the shape of the rotary cutters and improves the grinding effect and the like.

A double edge razor assembly with a razor blade alignment is provided. The double edge razor includes a head with a cap and a base. A post and at least one pin may protrude for the inner surface of the cap. The post and the at least one pin may snuggly fit within a channel through the razor. The post may fit through an aperture in the base, and the pin may fit within a pin hole in the base. The pin may align the razor in between the cap and the base, and prevent the razor from spinning out of alignment. The post may then attach to a handle to complete the double edge razor assembly.