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:
Oct. 06, 1992
Filed:
Apr. 20, 1990
Applicant:
Inventors:
Junguan Shen, Shanghai, CN;
Keming Du, Aachen, DE;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372104 ;
Abstract
An aerodynamic window for gas lasers, has an active chamber with a beam penetration opening free of solids. An end of a beam duct is connected to the beam penetration opening and is transversely penetrated by a nozzle duct of a gas flow window through which compressed gas can flow. A beam outlet opening delivers a laser beam to an exterior space which is preferably at atmospheric pressure. A suction chamber of a differential pump is provided between the other end of the beam duct and the beam outlet opening, and the working pressure of the differential pump is approximately equal to the pressure in the other end of the beam duct on the suction chamber side.