Title: Method of generating laser-radio beam

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Claims: What is claimed is:

1. In a method for generating a high temperature coherent electromagnetic beam by generating a single frequency sine wave signal in a hollow electrically conductive tubular tank coil of a radio-frequency generator; injecting an inert gas into a maximum current-low voltage point of said tank coil; conveying said inert gas through said coil to an exit port located at a maximum voltage low-current point of said coil; conveying said inert gas from said exit port through a hollow electrically conductive outlet tube to a nozzle having an outlet orifice; transmitting said single frequency sine wave signal from said maximum voltage low current point of said coil around a hollow electrode means centrally located in said nozzle orifice; the improvement characterized by: conveying a laser beam through said outlet nozzle and through the hollow portion of said electrode means, together with a low pressure gas stream; and reflecting said laser beam from the hollow portion of said electrode means onto said workpiece and focusing the laser beam thereon, while allowing said low pressure gas stream to continue directly toward said workpiece; whereby said inert gas forms an annular sheath which surrounds and focuses the high temperature stream emitted from said electrode means and nozzle orifice into a beam.

2. The invention of claim 1 and further including injecting a finely divided heat fusible material into a maximum current zero voltage point of tank coil; and conveying said material through said tank coil and out through said exit port to said nozzle orifice; whereby said material enters the coherent electromagnetic beam emitted from said nozzle, said material being thus sprayable onto workpieces to be deposited and fused thereon as a coating.

Other info:

Inventors: Fairbairn, Thomas E. (Westland, MI, US)

Application Number: 531895
Filing Date: 1974-12-12
Publication_date: 1976-03-30
Assignee: Sirius Corporation (Toledo, OH)
Primary Class(es): 219/121.85 219/121.47, 219/121.5, 219/121.51, 219/121.6, 219/121.84
Other Classes:
US Patent Ref:

3309564	Mar, 1967	Poulsen	219/121.
3324277	Jun, 1967	Herrin, Jr.	219/121.
3347698	Oct, 1967	Ingha, Jr.	219/121.
3648015	Mar, 1972	Fairbairn	219/121.
3719829	Mar, 1973	Vaill	331/94.
3723246	Mar, 1973	Lubin	331/94.

Other Refs:
Primary Examiner: Truhe, J. V.
Assistant Examiner: Peterson, G. R.
Attorney: Cullen, Settle, Sloman & Cantor