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. 22, 1977
Filed:
May. 29, 1975
Applicant:
Inventor:
Hassan Youssef, Taverny, FR;
Assignee:
La Metallurgie Francaise des Poudres Metafram, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
7343 / ; 73 612 ;
Abstract
In a method of testing a material to determine its suitability for forming at least a part of a self-lubricating bearing member containing oil by determining whether the material will cause deterioration of the oil, the material in powder form is immersed in the oil which is maintained for a period of time at a temperature at most equal to the maximum temperature of use of the oil, and the properties of the oil, e.g. viscosity and/or color, are compared with a sample of the oil maintained at the same temperature for the same length of time but which does not include the material.