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:
Sep. 07, 1976
Filed:
Sep. 11, 1975
Applicant:
Inventor:
Horst Gussefeld, Uttenreuth, DT;
Assignee:
Siemens Aktiengesellschaft, Munich, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
7343 / ;
Abstract
Stationary liquid flow patterns at boundary surfaces are recorded by coating the boundary surface with a layer of lacquer which can be attacked and exposing the boundary surface to a flow of liquid containing a substance which attacks the lacquer layer. In accordance with the preferred embodiments a photo-resist lacquer is sprayed onto the surfaces and etching substance dissolved in a liquid which is caused to flow past the boundary surface making possible a visible recording of the formation of eddies at obstacles.