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:
Nov. 29, 1988
Filed:
Apr. 08, 1987
Robert L Nelson, Orrville, OH (US);
William H McIntyre, Orrville, OH (US);
William J Danley, Green Township, Wayne County, OH (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An across-the-stack gas analyzing spectrometer has a radiation source assembly including a cylindrical tube 22 having, in succession from its outer end toward the stack end a radiation emission assembly 28, a first lens assembly 30, and an AOTF assembly, all in optically aligned arrangement because of the circular perimeter of the elements in the circular tube, the arrangement also including a projecting second lens nozzle 98 received in an air window assembly 104 which forms a venturi with the second lens, the air window having a ball joint arrangement 120 for easy alignment of the directed beam, and also including a small diameter air window tube 142 through which clean air is directed into the stack through a larger diameter stack opening.