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. 08, 1987
Filed:
Apr. 23, 1986
Applicant:
Inventors:
David J Wilson, Hampshire, GB;
Paul E Cope, Hampshire, GB;
Assignee:
The Marconi Company Limited, , GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P / ;
U.S. Cl.
CPC ...
2502 / ; 7351 / ; 7351 / ;
Abstract
A rotational motion sensor has a circular, tubular body (1) filled with a fluid. A sensor head (6) forming part of the body houses a movable detecting element in the form of a piston (7) which is magnetically levitated so that it is kept out of contact with the sensor body. Movement of the piston is detected in a number of different ways including using a variable magnetic reluctance pick-off (4, 5).