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:
Jul. 24, 1990
Filed:
Apr. 18, 1989
Applicant:
Inventors:
Jean-Louis Maupu, Arcueil, FR;
Hugues Chollet, Arcueil, FR;
Pierre Caroff, Arcueil, FR;
Denis Duhot, Paris, FR;
Assignees:
Alshtom, Paris, FR;
Institut National de Recherche sur les Transports et leur Securite, Arcueil, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; H01L / ;
U.S. Cl.
CPC ...
3242072 ; 32420712 ; 32420722 ; 32420726 ; 324235 ; 104284 ; 307309 ; 338 / ;
Abstract
A position sensor for measuring the separation, in a givne direction (Oy), between a first part such as a datum element of a railway vehicle axle and a fixed second part such as a rail on which said axles runs, includes magnets (11, 12) for producing a magnetic field above the second part (10) and Hall effect probes (15) for measuring the value of the component of the field in said given direction (Oy) with variation in that value being proportional to the separation.