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| Number | Title | Issue Date |
| 4439663 | Method and system for laser perforation of sheet material In the perforation of sheet material by light energy, a continuous focused laser beam is reflected from different locations along the beam axis to provide separate pulsed beams and the beams are issued onto the sheet material with the same beam cross-sect... | 03/27/1984 |
| 4427873 | Method and apparatus for aligning axes of assisting gas nozzles with laser beam axes in laser processing machines A method of and apparatus for aligning the axis of an assisting gas nozzle with a laser beam axis using a test piece in apparatus which uses a laser to process workpieces is disclosed in which the laser beam is arranged to pass through the assisting gas n... | 01/24/1984 |
| 4410785 | Method and apparatus for perforation of sheet material by laser In providing perforation uniformity both in the spacing between multiple rows of perforations in sheet material and in the spacings among perforations within each row, a common laser beam is shared among the rows, being directed to the sheet material thro... | 10/18/1983 |
| 4386145 | Fabrication of arrays containing interlaid patterns of microcells In the forming of microcellular arrays, such as those useful in photography, a closure is positioned to overlie a plurality of microcells forming a planar array. The closure is selectively removed from one set of micro- cells forming an interlaid pattern ... | 05/31/1983 |
| 4380855 | Method for filling hollow shells with gas for use as laser fusion targets Hollow shell laser fusion targets, such as glass microballoons, are filled with gases of the type which do not permeate through the wall of the balloon. A hole is laser-drilled in the balloon, a plug is placed over the hole and gas is introduced into the ... | 04/26/1983 |
| 4356376 | Pulse laser pretreated machining An improved laser-assisted machining process has special application to difficult-to-machine materials such as the titanium alloys and high temperature superalloys. A layer of material to be removed by a cutting tool is made weaker by drilling a series of... | 10/26/1982 |
| 4343358 | Laser slotted plastic well screen Plastic well screen has tapered, undercut slots formed by a laser beam focused through a lens having its focal point located at or slightly away from the surface of the plastic cylinder being slotted so that the laser beam diverges as it passes through th... | 08/10/1982 |
| 4341942 | Method of bonding wires to passivated chip microcircuit conductors A wire is positioned in intimate contact with a microcircuit chip above a conductor line or pad on the chip. The line is protected by a layer of passivating or insulating material deposited upon the chip. A short pulse, focussed, energy source such as a l... | 07/27/1982 |
| 4332999 | Method for machining a workpiece with a beam of radiant energy assisted by a chemically-reactive gas A method for machining a workpiece with a beam of radiant energy in the presence of a chemically-reactive gas characterized in that (a) the beam heats the area of incidence of the workpiece to a reaction temperature that is below the melting point of the ... | 06/01/1982 |
| 4322600 | Method and apparatus for forming microcavities on the surface of a rolling mill roll A continuous beam from a laser is divided into two intermittent beams by a reflecting disc with peripheral holes, rotating about an axis skew to the continuous beam. At least one of the intermittent beams is transmitted to a marking head having a lens whi... | 03/30/1982 |
| 4317023 | Method of making slotted well screen Plastic well screen has tapered, undercut slots formed by a laser beam focused through a lens having its focal point located at or slightly away from the surface of the plastic cylinder being slotted so that the laser beam diverges as it passes through th... | 02/23/1982 |
| 4316073 | Document recording method An apparatus and method are provided for recording information on documents by means of pulsed radiation. In one form, a record member such as a sheet of paper, plastic, paper board or other suitable material is intersected by pulses of intense light ener... | 02/16/1982 |
| 4302654 | Microperforation of cigarette tipping paper by use of laser beam Disclosed is a method and apparatus for perforating cigarette tipping paper which holes may be obvious or which may be so small as to be "non-obvious". The holes produced range upward from about 0.025 mm. (0.001") or 0.051 mm. (0.002") and are rectangular... | 11/24/1981 |
| 4297559 | Apparatus for controlled perforation of moving webs with fixed focus laser beam A system for precision perforation of moving webs employing a pulsed, fixed focus laser beam wherein the laser pulses are automatically controlled in pulse repetition frequency and in pulse width to provide a desired preset web porosity. Closed loop circu... | 10/27/1981 |
| 4288679 | Method of microdrilling metal workpieces using a power laser A laser microdrilling method uses a power laser beam the action of which causes solid workpiece metal to be transformed into both liquid and vapor phases. In order to improve the surface finish and dimensional accuracy of a hole formed, the workpiece is h... | 09/08/1981 |
| 4277669 | Method and device for detecting the threshold of generation of a laser beam Method and device for detecting the threshold of generation of a non-visible laser beam, wherein a dark colored film, enclosed in a transparent container, is placed in the path of the laser beam to cause the dark film to burn when the laser beam impinges ... | 07/07/1981 |
| 4267427 | Method of boring a hole through a magnet made of an intermetallic compound A method of boring a hole through a magnet made of an intermetallic compound, characterized in that the hole is formed by a laser machining. The magnet may be reinforced by impregnation with a nonmagnetic material such as a high polymeric substance or a m... | 05/12/1981 |
| 4227582 | Well perforating apparatus and method A method and apparatus for perforating a well casing and surrounding formation are disclosed. The perforating apparatus includes a laser source for projecting a high intensity laser beam transversely through the well bore and surrounding formation and a n... | 10/14/1980 |
| 4220842 | Method of removing material from a workpiece A pulsed infrared laser has an optical system for focusing the laser beam impulse, positioning a metallic workpiece to be drilled at the waist of the beam or at a spacing in the propagation direction in front of the waist of the laser beam, surrounding th... | 09/02/1980 |
| 4206258 | Multilayer felt band containing channels produced by exposure to beams of light A multilayer felt band, particularly for paper manufacture consisting of rmoplastic material where at least one layer comprises storage spaces having the shape of channels obtained by melting binding portions of fibers, the channel walls being inclined w... | 06/03/1980 |
| 4181051 | Method of making fluid-issuing openings through the walls of flexible plastic members, particularly dripper emitters Described is a method of making fluid-issuing openings through the wall of flexible plastic members, particularly fluid conduits, by forming each opening through a small radius of curvature portion of the conduit wall while the respective wall portion is ... | 01/01/1980 |
| 4167662 | Methods and apparatus for cutting and welding Methods and apparatuses for cutting, welding, drilling or surface treating a workpiece are described. A laser beam is directed towards a workpiece and an arc is struck between an electrode and the heat affected zone created by the laser beam in the workpi... | 09/11/1979 |
| 4156807 | Method for preventing burr formation during electron beam drilling Disclosed is an electron beam drilling process in which the workpiece surface first penetrated by the beam is coated with a stop-off material having the required high temperature resistance for preventing formation of burrs around the perimeter of the hol... | 05/29/1979 |
| 4100393 | Method for making a cannula using a laser and the cannula made thereby A process for making a removable cannula using a laser to make a longitudinal cut and a longitudinal score line in the cannula wall and the cannula made thereby.... | 07/11/1978 |
| 4092515 | Laser method of precision hole drilling A method for obtaining a hole in a workpiece essentially free of a recast layer and heat affected zone with laser radiation is disclosed. Pulses of laser radiation having durations comparable to the time required to vaporize workpiece material, typically ... | 05/30/1978 |
| 4088864 | Process for forming outlet passageways in pills using a laser A high speed process and apparatus are disclosed for forming outlet passageways of accurate, predetermined size in the walls of pills which dispense their contents by osmotically pumping said contents out said outlet passageways. The pills are moved in su... | 05/09/1978 |
| 4050507 | Method for customizing nucleate boiling heat transfer from electronic units immersed in dielectric coolant A method is provided for customizing the heat transfer from the walls of an electronic unit such as a semi-conductor chip or wafer by determining the required heat transfer characteristics of the units; drilling holes of a predetermined size and location ... | 09/27/1977 |
| 4044222 | Method of forming tapered apertures in thin films with an energy beam An energy beam, such as the coherent output of a laser, is applied to a thin film in a controlled manner, preferably as a pluse. The length of the pulse is regulated to form a tapered aperture in the film. The duration, energy and wavelength of the beam p... | 08/23/1977 |
| 4038513 | Process for energy beam perforation, especially electron beam perforation, of multi-layered artificial leather A process for the energy beam perforation of multi-layered artificial leather, which has an essentially impervious top layer and a support layer which is pervious to gas, wherein perforation is carried out with the support layer turned towards the beam.... | 07/26/1977 |
| 4032743 | Laser microperforator A method and apparatus for forming rows and columns of closely spaced micron sized holes in a thin foil, including a cylindrical member and means for rotating it. There are means for mounting a plurality of axially extending foil strips on the cylindrical... | 06/28/1977 |
| 3975986 | Weep hole for hydraulic jack A laser formed hole is used as a "weep" hole in a hydraulic jack to limit the power stroke of the ram thereby permitting the use of a urethane packing on the ram instead of the usual leather packing.... | 08/24/1976 |
| 3962558 | Method and apparatus for drilling watch jewels or other workpieces by means of laser beams In order to drill holes in watch jewels or the like a laser beam is produced having pulses in which successive spikes are formed with a substantially constant period, the first spike being greater in intensity than the subsequent spikes which can have equ... | 06/08/1976 |
| 3956052 | Recessed metallurgy for dielectric substrates A ceramic green sheet material is metallized by laminating a thin organic material, preferably MYLAR, to a ceramic green sheet surface, and then employing an electron beam to define a predetermined pattern of openings extending through the organic materia... | 05/11/1976 |
| 3934109 | Latch pivot for latch needle This is a knitting machine latch needle. The latch pivot is formed by displacing portions of the walls of the slot so that the displaced portions extend into the pivot hole of the latch. The displaced portions of the walls are fused together by a high ene... | 01/20/1976 |
