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Class 219/121.76 - Multiple beams


Subclass of Class 219 - Electric heating
Definition: Subject matter having plural coherent light beams.
No. of patents: 301
Last issue date: 05/08/2012


              8  
NumberTitleIssue Date
4379217Method 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 helicopter and is adapted to be rotated about a nonvertical axi...
04/05/1983
4377736Method and apparatus for removing material from a surface
The relative position of a plurality of holes through a surface of a member, the holes having been generated by high energy means, such as a laser, which vaporizes material of the member to produce a light flash, is inspected and controlled as the holes a...
03/22/1983
4365136Zone refinement of inertia welded tubulars to impart improved corrosion resistance
Corrosion resistance of tubular metal products is enhanced, and particularly to welds formed between metal tubes or pipes and threaded ends....
12/21/1982
4358467Method 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 CO2 laser beam, so as to burn a path around the shell which separates the shell ...
11/09/1982
4338508Inscribing apparatus and methods
Apparatus and methods for inscribing workpieces for the fabrication of masks and direct fabrication of microcircuits are described. The invention is primarily concerned with correcting for positional errors and to this end two coaxial beams (20,32) are di...
07/06/1982
4327275Laser welding of an electron gun
A method of assembling an electron gun, which method permits welding of a number of welding points to be effected simply, in a short period of time and without causing mechanical distortion in welded parts and comprises the steps of; causing relative move...
04/27/1982
4322600Method 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
4289378Apparatus for adjusting the focal point of an operating laser beam focused by an objective
A method of and an apparatus for adjusting the focal point of a working laser beam onto a microscopic target region of a transparent biological object to locate the focal point a spaced predetermined microscopic distance from an interface of the object is...
09/15/1981
4281670Apparatus for increasing the permeability of wrapping material for rod-shaped smokers products
Webs which are to be converted into wrappers for filter rod sections, cigars, cigarillos or cigarettes, or the wrappers of such articles, are perforated by one or more laser beams in the machine wherein the articles are produced. The permeability of wrapp...
08/04/1981
4250372Process and apparatus for the heat treatment by high energy beams of surfaces of steel products
A first high energy beam is projected against a first flank surface of a substantially V-shaped steel surface, and simultaneously thereto a second a high energy beam is projected against a second flank surface of the V-shaped surface. The high energy beam...
02/10/1981
4223201Laser welding apparatus for shipyard panel shops
An automated welding facility for the fabrication of shell sections suitable for ship construction utilizing laser welding is disclosed. The facility includes a panel welding station which includes an optical system for providing radiation for automated t...
09/16/1980
4135077Laser bread browning apparatus
Apparatus for heating the outer surface of an object such as a loaf of bread. The object is conveyed through a heating chamber which has a plurality of apertures therein. A plurality of laser beams of a wavelength that is readily absorbed by the outer sur...
01/16/1979
4128897Archival memory media and method for information recording thereon
Binary information is stored in a semiconductor archival memory medium by formation of a region of an alloy, of the semiconductor material and a non-doping material, at each of a plurality of potential memory sites at which a first binary value of informa...
12/05/1978
4125755Laser welding
A beam welding apparatus useful for welding a plurality of workpieces spaced along a workpiece plane during a scan of the workpieces is disclosed. A scan light and a detection means are used to detect the location of each workpiece and to supply a signal ...
11/14/1978
4088799Method of producing an electrical resistance device
The process by which this device is made comprises the implantation of ions into an insulator. Surface charge on the insulator is discharged during implantation by an electron beam or by a thin conductive surface layer previously deposited on the insulato...
05/09/1978
4063063Method of descaling metal products
Metallic sheets, wires, bars or other products are descaled by sweeping their surfaces with one or more laser beams to detach an adhering oxide film along lines traced by the beam sweep. The film fragments, still loosely adhering at locations between the ...
12/13/1977
4032743Laser 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
3995136Enhanced laser beam coupling to a plasma
Density perturbations are induced in a heated plasma by means of a pair of oppositely directed, polarized laser beams of the same frequency. The wavelength of the density perturbations is equal to one half the wavelength of the laser beams. A third laser ...
11/30/1976
3943324Apparatus for forming refractory tubing
Refractory tubings approaching theoretical density, either in polycrystalline or single crystal form, are made by moving a preformed tubing of a refractory material and a heated zone relative to each other, the heating zone providing sufficient heat to me...
03/09/1976
3935419Severing of glass or vitrocrystalline bodies
In the severing of bodies of glass or vitrocrystalline materials by the application of a laser beam, the severing operation is improved by employing a beam of which at least the predominent wavelength is such that at least 10% of the beam energy penetrate...
01/27/1976
3932726Glass cutting
In the severing of glass by irradiating it with a laser beam along the line where it is to be severed, the quality and speed of the severing operation are improved by preliminarily scoring the glass along such line....
01/13/1976
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