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:
May. 08, 1990
Filed:
Dec. 18, 1987
Applicant:
Inventors:
Ali M Nasr, Summit, NJ (US);
Gregory W Miller, Bridgewater, NJ (US);
Assignee:
Liquiflo Equipment Company, Warren, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G01M / ; G01P / ; F04B / ;
U.S. Cl.
CPC ...
32420715 ; 73 66 ; 73660 ; 32420725 ; 340682 ; 417 63 ; 417420 ;
Abstract
A device is provided for measuring bearing or shaft wear in an apparatus utilizing a rotating shaft positioned in a bearing. A plurality of magnets are mounted on the rotating shaft and at least three coils forming at least two pairs of coils are mounted on a stationary housing surrounding the shaft. Means are provided for measuring the change in induced voltage for each pair of coils independent of shaft rotation speed, ambient temperature, the flux density of the magnets and the concentricity of the bearing and shaft diameters.