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. 20, 1990
Filed:
Nov. 09, 1988
Applicant:
Inventor:
Yoichi Ishikawa, Tokyo, JP;
Assignee:
Able Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01N / ;
U.S. Cl.
CPC ...
324690 ; 324441 ; 7330 / ;
Abstract
In an apparatus for detecting the surface of a liquid or foam, for example in a fermentation vessel a detector electrode (10) is surrounded at its lower end by a protective shroud (12) so as to protect a confined vapor space (14) surrounding the detector electrode. The vapor in the space (14) is maintained at a relatively low humidity either by heating the detector electrode or some other part of the apparatus or by purging the space (14) with a relatively dry air or gas. It is thereby ensured that no condensation onto the O-ring seal (20) and surrounding parts takes place. The shroud (12) also protects the parts from splashing.