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:
Feb. 03, 1976
Filed:
Oct. 21, 1974
Applicant:
Inventor:
Kenneth A Wickersheim, Palo Alto, CA (US);
Assignee:
Spectrotherm Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356246 ; 73331 ; 126200 ;
Abstract
An opaque fluid chamber having some means for filling and removing fluid therefrom and at least one aperture therein having a transparent plate sealing it, thereby permitting light to enter or leave the chamber through said aperture without losing fluid material therethrough. The transparent plate is many times larger than the size of the aperture and selectively clamped thereagainst in a manner permitting removal of a fogged area of the transparent member away from the aperture for continued light transfer into and out of the chamber without having to clean or replace the transparent plate.