United Technologies Corporation

The United States of America As Represented by the United States

Mostek Corporation

Clyde O Brown

Bernard H Kear

David C Smith

Peter P Chenausky

John G Smeggil

Robert H Bullis

Norman S Bornstein

Jack W Davis

Edward M Breinan

Ernest B Manning, Deceased

Raymond E Tourtellotte

A CO.sub.2 gas laser is equipped with a gas mixture control arrangement which introduces into the interior of the laser, of the constituent component of water, only hydrogen, in such amounts based on the instantaneous humidity of the gas mixture that the dew point of water vapor resulting from the combination of the thus introduced hydrogen with incidental oxygen present in the laser interior as an incident to the operation of the laser is maintained within a predetermined range.

Laser gas composition control arrangement and method

A method of surface hardening a metal corner includes the application of a laser beam to the surface, a portion of the beam being blocked by a cooled tube, so that the corner is heated by conduction from the heated areas.

Laser hardening with selective shielding

An isolator device that permits the passage of low-intensity radiation while blocking the passage of high-intensity radiation comprises a spatial filter and a gas cell that utilizes the phenomenon of thermal blooming to deflect high-intensity radiation so that it is blocked by the spatial filter.

Isolator for high power radiation

The high temperature properties of protective coatings, paricularly the oxidation resistance, is improved by the melting of a surface portion of the coating using a high intensity energy source. The surface melting refines and homogenizes the coating structure, thereby eliminating defects which would otherwise cause premature coating failure.

High temperature coatings by surface melting

An improved electrode configuration and method for the deposition of electrical energy into an electric discharge laser having a gas path transversely disposed to an optical axis and the electric field is disclosed. The electrode configuration includes a cathode, having a row of preionization electrodes with each preionization electrode typically having the configuration of a pin and power electrodes positioned downstream of and in a parallel relationship to the row of preionization electrodes wherein the power electrodes typically have a configuration of a rod, and a planar anode disposed opposite the cathode in a parallel relationship thereto, wherein the cathode and the anode define the gas path therebetween. The electrode configuration is adapted for operation without ballast resistance in the electrical circuit of the power electrodes for high electrical power deposition with high efficiency into a gas having a high pressure and a high flow rate for convective cooling to obtain a laser beam having high power. The electrode configuration provides a discharge having substantially diffuse and uniform characteristics within the discharge region.

Apparatus and method for deposition of electrical power in an electric

Molten metal removed from a workpiece in a laser cutting operation is blown away from the cutting point by a gas jet and collected on an electromagnet.

Slag capture and removal during laser cutting

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 a substrate. The feedstock may be in the form of metal powder or wire. Different finished geometries are also described.

Growing community of inventors

Newington, CT, United States of America

Clyde O Brown