The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1989
Filed:
Mar. 16, 1987
Applicant:
Inventor:
Lester L Jarrell, Lakeside, CA (US);
Assignee:
Chemtronics, El Cajon, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 38 ; 372 31 ;
Abstract
The invention is directed to the power control of a gas laser being moved by a prime mover along at least two different axes at various speeds to provide effectively constant output power to the workpiece surface. Signals from the prime mover axis representative of the speed of movement of each axis are separately rectified then summed and modulated with a positively offset triangular wave signal. The resulting output signal is a composite width modulated square wave pulse representative of the instantaneous laser output power required to maintain an effective constant power to the workpiece at various speeds and directions of movement of the laser.