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4751 results about "Laser cutting" patented technology

Laser cutting is a technology that uses a laser to cut materials, and is typically used for industrial manufacturing applications, but is also starting to be used by schools, small businesses, and hobbyists. Laser cutting works by directing the output of a high-power laser most commonly through optics. The laser optics and CNC (computer numerical control) are used to direct the material or the laser beam generated. A commercial laser for cutting materials involved a motion control system to follow a CNC or G-code of the pattern to be cut onto the material. The focused laser beam is directed at the material, which then either melts, burns, vaporizes away, or is blown away by a jet of gas, leaving an edge with a high-quality surface finish. Industrial laser cutters are used to cut flat-sheet material as well as structural and piping materials.

Multi-directional and variably expanded sheet material surfaces

Expandable surfaces made from sheet materials with slits distributed on the surface of sheet material where the surfaces expand by application of force along or/and across the surface of sheet material. The unexpanded surfaces are flat sheets, or closed surfaces like cylinders, spheres, tubes, or custom-designed organic shapes marked with pre-formed or post-formed slit designs. The expanded surfaces can be single units or modules which can be attached to one another through various means. The sheet materials range from hard surfaces like metals, to softer materials like papers and plastics, or pliable materials like fabrics, rubbers, synthetic surfaces or bio-surfaces. The slits are arranged in patterns ranging from periodic, non-periodic to irregular designs. The slits can be straight, bent, curved or irregularly shaped with even or uneven spacing. Slitting can be achieved by digital cutting or punching devices like laser-cutting, water-jet cutting, digital punching, automated dies, etc. or pre-formed when casting the sheet material. Force can be applied manually with tools or through the use of machines and special set-ups. Applications range from architectural surfaces, walls, ceilings, panel systems, structures and sculpture. On a smaller scale, applications include containers, packaging material, fabrics and human wear. On micro- to nano-scale, applications range from expandable surfaces for gauzes, band-aids, stent designs, skin grafts, semi-permeable membranes and micro-filters for various industries including purification of fluids and chemical substances.

Multiple-angle scissor blade

The invention is directed to a pair of laparoscopic scissors, comprising a pair of blades connected at a pivot, each of the blades having a length, a tip portion, a body portion, an outer surface, an inner surface and a cutting edge, the cutting edge forming an angle with the outer surface along the length of the blade such that tension during a cutting operation at the tip portion is about the same as tension at the body portion during the cutting operation. The angle formed may be greater at the tip portion which continuously decreases over the length of the blade. The tip portion may have a first body thickness and the body portion may have a second body thickness different from the first body thickness. During the cutting operation, the blades progressively move over each other to provide a point contact along the cutting edges. The blades may be thickened in a number of locations and combinations including: (1) one blade could be thicker than the other to force the opposing blade to flex; (2) both blades could be thicker at the body portions to give more strength when cutting staples; (3) each blade could be thickened on one side or the other to stiffen certain locations; and (4) the tips of each blade could be thicker than the body portions to provide increased tension at the tips. In another aspect of the invention, a process of manufacturing the pair of scissors of the invention is disclosed, comprising the steps of form grinding the blades into a desired shape from a pre-hardened block of material, and sharpening the cutting edges of the blades. The blades may also be formed through other processes including wire EDM, laser cutting, waterjet cutting, machining, cast or metal injection molding, and other independent profile manufacturing processes. The manufacturing process of the invention is beneficial in that each profile can be accurately controlled, and the parts will be exact every time.

Capacitive, paper-based accelerometers and touch sensors

Accelerometers and capacitive touch sensors fabricated from inexpensive, lightweight, disposable substrate materials, such as paper, are provided. These can be fabricated using simple technologies, such as laser cutting and screen printing. In one embodiment, a touch sensor includes a parallel plate capacitor having a fixed plate formed of a substrate material having a conductive layer and a deflectable plate formed of a paper substrate material having a conductive layer. In a second embodiment, a touch sensor includes a parallel plate capacitor formed of an exterior conductive layer deposited on a paper substrate material and an interior conductive layer deposited on a substrate material. In a third embodiment, a touch sensor includes an active electrode and a grounded electrode patterned on the surface of a paper substrate material. In another embodiment, an accelerometer includes a parallel plate capacitor containing a fixed plate and a free plate containing a paper substrate. Upon an applied acceleration, the distance between the plate of the parallel plate capacitor in an accelerometer changes, eliciting a change in the capacitance of the sensor. Measurement of capacitance can be correlated to the acceleration or deceleration applied to the accelerometer.

Intelligent laser cutting system provided with master-slave camera and cutting method thereof

The invention provides an intelligent laser cutting system provided with a master-slave camera and a cutting method thereof. The intelligent laser cutting system provided with the master-slave camera comprises a worktable, a small head stock, a local slave camera and a laser head, a global master camera, a monitoring terminal, a main controller and a driving motor, wherein the worktable is positioned at the bottom; the small head stock is arranged above the worktable; the local slave camera and the laser head are fixedly arranged with the small head stock; the global master camera is hung on the top; the monitoring terminal is used for monitoring images of the global master camera and the local slave camera; the main controller is electrically connected with the global master camera; the driving motor is controlled by the main controller and is connected with the worktable and the small head stock; a lens visual field of the global master camera comprises the entire worktable; the driving motor drives the small head stock to move; and the local slave camera moves synchronously along with the small head stock and performs local image acquisition on the worktable. High-efficiency and high-accuracy laser cutting processing can be performed on various applicable objects without depending on the accuracy of the main controller of a laser cutting machine and a mechanism.

Calibrated surgical probe

A microsurgical probe tip and method of using same are disclosed. One embodiment of the microsurgical probe tip comprises: an outer cutting member, comprising a first tube having a wall, a closed end and a port formed in the wall near the closed end; an inner cutting member, comprising a second tube coaxial with and operable to move in a reciprocating motion within the first tube and having a first end operable to be coupled to a driving mechanism and a second end with a cutting edge for cutting tissue; a first alignment mark on the outer cutting member at a first predetermined position adjacent to the port; and a second alignment mark on the inner cutting member at a second predetermined position adjacent to the cutting edge of the inner cutting member, wherein the second alignment mark is visible through the port and operable to be aligned with the first alignment mark such that when the first and second alignment marks are aligned, a preferred relative positioning between the inner and outer cutting members is achieved. The microsurgical probe tip can further comprise one or more radial alignment marks on the inner cutting member, wherein the radial alignment marks are parallel to one another at fixed intervals from one another and positioned so that one or more of the radial alignment marks are visible through the port so as to indicate the relative lateral positioning between the inner cutting member and the outer cutting member. The radial alignment marks can be made by a method, or combination of methods, such as laser cutting, inkjet printing, and mechanical scribing. The driving mechanism can be a pneumatic driving mechanism, an electro-mechanical driving mechanism, and/or a magnetic driving mechanism. The microsurgical probe tip can further comprising a plurality of gauge marks on an outer surface of the outer cutting member, wherein the gauge marks are parallel to one another at a fixed interval (e.g., 1 millimeter) from one another and positioned so that the gauge marks can be used as a measuring tool in a surgical environment
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