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:
May. 27, 2003
Filed:
Aug. 28, 2000
Komatsu Ltd., Tokyo, JP;
Abstract
A gas laser device including a dust filter with which a flow rate of laser gas flowing between discharge electrodes is approximately uniform in a longitudinal direction of the discharge electrodes without a variation with time is provided. For this purpose, the gas laser device includes a laser chamber ( ) containing laser gas, a pair of discharge electrodes ( ) disposed inside the laser chamber ( ) to face to each other for exciting a laser medium by discharge to thereby oscillate laser light, a fan ( ) for circulating the laser gas to send the same to an area between the discharge electrodes ( ), and a dust filter ( ) for eliminating dust generated inside the laser chamber ( ), and has a configuration in which a filter inlet port ( ), which is formed in an inner wall ( A) of the laser chamber ( ) and guides the laser gas into the dust filter ( ), is formed to be approximately vertical to the inner wall ( A) of the laser chamber ( ).