Patent ID: 6365413
Filing Date: 2002-04-02
Classification: G01N

Abstract:
A thin film thermal oxidative engine oil or other oleaginous liquid deposit device comprising an oleaginous test liquid placement volume; a heatable deposit surface in the form of a rod having a generally helical guide or channel for the test liquid such that a thin film can be formed on said surface, in which bulk flow and its inherent difficulties in effective diffusion of the oxidant of other substance into the body of the oleaginous test liquid can be avoided, and diffusion can be ameliorated or eliminated as a substantially limiting factor when said liquid is delivered to said surface by a thin film forming unit, with said surface in liquid communication with said volume; a supply for at least one of an oxidant and another substance which can adversely affect said liquid; and the thin film forming unit which delivers said liquid to said surface in said thin film.