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4379217 |
Method and means of melting frozen material on terrain or water surfaces
A heat ray emitting means, preferably a laser beam transmitter, is mounted on the undercarriage of a helicopter. The heat ray emitting means is mounted on a turret on the undercarriage of the...
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4377735 |
Laser working treatment process capable of controlling the form of heated portion of a steel material
A steel material is treated by laser beams, in such a manner that the laser beams and a gas jet are concurrently projected to a working point of the steel material to produce a plasma around the...
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4370540 |
Reflective beam rotator
An apparatus adapted for rotating a beam of radiation to obtain azimuthal and radial time averaging of the intensity distribution incident onto a workpiece is disclosed. The apparatus includes a...
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4369348 |
Method and apparatus for high frequency optical beam oscillation
A mechanical scanning apparatus adapted for oscillating the focus zone of a beam of radiation having high power to modify and control the nature and extent of the interaction zone on a workpiece is...
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4368080 |
Method of removing rust from metallic objects
Rust is removed from the surfaces of metallic objects by focusing a laser beam on successive increments of the surface so that the beam causes evaporation of rust. The laser is a gas laser and is...
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4360956 |
Piston having at least one piston ring groove
A piston made of an aluminum alloy has at least one piston ring groove defined by two side walls and a bottom wall. At least one preferably both side walls of the piston ring groove(s) are formed...
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4359486 |
Method of producing alloyed metal contact layers on crystal-orientated semiconductor surfaces by energy pulse irradiation
A region of a semiconductor surface intended for a metal contact is scanned with a closely packed sequence of intense laser light pulses so as to generate a disturbed surface layer and a metal...
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4358467 |
Method for shelling of nuts with a laser beam
The removal of shells from hard shelled nuts, particularly macadamia nuts, is accomplished by rotating the nut in the path of a high power cw laser beam, such as a CO 2 laser beam, so as to burn a...
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4356379 |
Integrated heating element and method for thermal testing and compensation of integrated circuits
Apparatus for compensating thermal drift of temperature sensitive circuitry in an integrated circuit by heating the temperature sensitive circuitry by applying power to a heating element in the...
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4348263 |
Surface melting of a substrate prior to plating
Substrates for use in electrical contacts are prepared prior to plating by rapid surface melting by means of a laser beam or an electron beam. Improved microscopic surface characteristics are...
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4338114 |
Laser treatment method for imparting increased mechanical strength to glass objects
A method for imparting increased mechanical strength to a glass object having imperfections in a surface thereof. The glass object is heated to a temperature above the strain point of the glass. A...
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4335295 |
Method of marking a metal device
The present invention is a method of marking a metal device with an identification symbol or a serial number which is not detectable by a visual examination. The method of marking includes the...
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4330911 |
Process for production of an object consisting of at least two parts movable relative to each other, one of which is substantially enclosed within the other
A process for the production of objects consisting of at least two parts, such as the inner and outer rings of a bearing movable relative to one another. One part is substantially enclosed within...
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4328529 |
Silicon carbide igniters
An electrical exceptance heater or igniter characterized by having a core bonded by regrowth of silicon carbide is produced by heating particulate silicon carbide which may be mixed with a minor...
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4328411 |
Cutting amorphous metal by crystallization with a laser or electron beam
A rapid method of cutting thin amorphous metal sheet material is to use a focused heat source such as a laser beam or electron beam to heat local regions of the material above the crystallization...
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4323756 |
Method for fabricating articles by sequential layer deposition
A method is described for the production of bulk rapidly solidified metallic articles of near-net shape, by depositing multiple thin layers of feedstock using an energy beam to fuse each layer onto...
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4319119 |
Process for gettering semiconductor components and integrated semiconductor circuits
Semiconductor components and integrated semiconductor circuits which are produced in a semiconductor crystal wafer are provided with a getter layer on the back side (opposite the active device...
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4319120 |
Method and apparatus for the control of shielding gases used in power laser processes
In order to remove the plasma cushion and loose metal material created by the action of the laser on a metal workpiece, a shielding gas jet is directed from a nozzle across the workpiece surface...
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4316074 |
Method and apparatus for laser irradiating semiconductor material
A laser system is disclosed for facilitating transient surface heating and/or melting and regrowth of amorphous, polycrystalline or imperfect crystalline semiconductor wafer material. This system...
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4315130 |
Method of treating object by laser beam and apparatus therefor
There are disclosed a laser treatment method and an apparatus therefor in which a laser beam is irradiated on an object to be treated. The laser beam emitted from a laser apparatus is divided into...
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4313093 |
Laser device
A laser device particularly suitable for use in surgery includes a housing and a laser beam oscillation device elastically mounted within the housing. The laser beam oscillation device includes an...
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4307131 |
Method of manufacturing metal-semiconductor contacts exhibiting high injected current density
A method for virtually eliminating contact resistances in particular at very high frequency, for instance in the case of source and drain contacts of a field effect transistor. The method consists...
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4307046 |
Method of laser machining contact lenses
A method of cutting spherical, aspheric and toric optical surfaces by rotating the lens around the optical axis and moving a cutting device on a X and Y axis to produce the desired lens shape. The...
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4305973 |
Laser annealed double conductor structure
In double conductor micro-electronic structures, prior to the low temperature deposition or growth of an insulating layer over a polycrystalline or amorphous surface, the surface is annealed using...
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4304978 |
Heat treating using a laser
A method and apparatus are disclosed utilizing a laser for heat treating a transformation hardenable workpiece. Sufficiently high laser power densities are provided at the workpiece surface to...
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4294631 |
Surface corrosion inhibition of zirconium alloys by laser surface β-quenching
A laser beam is scanned over the surface of a structure comprising zirconium alloy in overlapping passes to form a barrier layer of corrosion resistant β-quenched zirconium alloy at the treated...
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4289952 |
Process for controlling powder size with optical energy
Metal or ceramic powders having a narrow size distribution are produced by passing a gas entrained powder through an intense light beam which couples preferentially with the larger particles to...
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4288895 |
Bearings
This invention is a method of making a flanged half-bearing in which a semi-cylindrical journal bearing shell and two semi-annular end flanges are held in a jig with one flange in contact with each...
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4288530 |
Method of tuning apparatus by low power laser beam removal
A thin film structure is provided with the capability of low-power laser tuning and trimming. Trim windows in a plated ground plane are incorporated to allow automated tuning procedures using...
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4286250 |
Laser formed resistor elements
The invention is an electrical component with a body element comprising an organic substrate portion and a laser formed, resistor portion carburized thereon. A first electrical conductor is...
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4281030 |
Implantation of vaporized material on melted substrates
Implantation of a particle flux (200), for example a laser produced particle flux, upon a substrate (5) is enhanced by premelting the substrate surface with a beam of radiation (110) from a pulsed...
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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...
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4266548 |
Apparatus for and method of utilizing energy to excise pathological tissue
Pathological tissue is excised with a beam from a laser that is coupled through a flexible, optical wave guide to a collimator that reduces the beam cross sectional area by variable, controlled...
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4265747 |
Disinfection and purification of fluids using focused laser radiation
Disinfection of aqueous media contaminated with microorganisms is effected by contacting said media with a gas phase in which a plasma is generated by focused laser radiation. Similarly,...
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4261274 |
Deformation properties of the edge of a deep-drawn metal can
A method of producing a metal can or similar object by drawing and ironing wherein subsequent to the drawing process the edge of the can or object is cut to size, while the can or object is rotated...
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4259367 |
Fine line repair technique
Repair of opens and shorts in semiconductor packages and chip metallurgy by initial conversion of shorts into opens by severing of lines about the shorts, followed by interconnection of conductor...
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4258078 |
Metallization for integrated circuits
The sharp features that appear on metallization patterns defined by conventional etching processes can be eliminated by instantaneous melting with short laser pulses. Flow is minimized due to the...
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4248369 |
Laser cutting of ceramic tubing
Polycrystalline alumina tubing is scribed by means of laser pulses which are reiteratively focused on the same spots at spaced time intervals. By drilling small holes, the laser need be on for a...
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4247972 |
Method of manufacturing a piston ring
A parted annular piston sealing ring and a method for manufacture thereof wherein an inwardly facing ring surface adapted to be engaged by an expander-spring for expanding the ring into sealing...
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4242152 |
Method for adjusting the focus and power of a trimming laser
A laser is used to cut slots into a film deposited on a substrate so that a clean kerf is produced without harming the substrate. The laser cut vaporizes the film material as the removal mechanism...
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4240094 |
Laser-configured logic array
An LSI fabrication process employs pulsed laser energy to selectively tailor individual logic elements of which the building blocks of an LSI array may be configured and to selectively interconnect...
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4237363 |
Beam welding apparatus and method
An apparatus and method are provided for welding portions of members disposed in edgewise abutment or overlapping relationship by means of a high intensity beam of radiation such as a laser beam or...
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4234637 |
Microporous protective coverings
A flexible, microporous, non-water soluble, non-skin-toxic film is provided for use in protective garments such as diver's suits, foul weather suits and the like. The film is of a thickness in the...
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4229865 |
Machine for laser scribing and winding metallized film capacitor blanks
A pair of very thin dielectric films, each completely metallized on one side, are positively advanced over a pair of drums of a machine while the films are laser scribed and slit to form two sets...
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4227065 |
Method of joining current conducting components of wave guide elements and producing of the same
A wave guide is formed from a plurality of internally coated plates whose internal coating forms the current-conducting surfaces of the wave guide. The plates are welded together, their corners...
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4224498 |
Apparatus for perforating articles by laser
Perforations are made at locations spaced about the periphery of a cigarette by conducting separate parts of a laser beam through respective separate light paths which intersect such spaced...
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4224499 |
Laser welding aluminum to copper
Copper and aluminum conductors are butt welded or corner welded by a two-part process involving heating and melting the Cu-Al interface with energy from a pulse laser and simultaneously generating...
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4224497 |
Method for making filter cigarettes using light energy to make perforations in the filter tipping wrap
Perforations are made at locations spaced about the periphery of a cigarette by conducting separate parts of a laser beam through respective separate light paths which intersect such spaced...
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4224101 |
Method of manufacturing semiconductor devices using laser beam cutting
A method of manufacturing semiconductor devices using laser beam cutting is disclosed in which the surface debris or pollution resulting from the laser beam cutting operation is removed by a...
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4223202 |
Apparatus and method for welding boat subassemblies utilizing laser radiation
An apparatus for welding T-frame stiffeners circumferentially to the interior surface of a cylindrical shell at selected axial positions to fabricate reinforced hull sections suitable for boat...
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