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:
Nov. 26, 2002
Filed:
Dec. 07, 2000
Applicant:
Inventor:
Michael D. Crossfield, West Wickham, GB;
Assignee:
Flying Null Limited, Harston, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 ; G01B 7/30 ; G01V 3/08 ; G01V 1/500 ; A61B 5/05 ;
U.S. Cl.
CPC ...
G01B 7/14 ; G01B 7/30 ; G01V 3/08 ; G01V 1/500 ; A61B 5/05 ;
Abstract
A method of sensing the position of a first element with respect to a second element is disclosed, the first element being movable with respect to the second. The method comprises: (a) fixing a first magnetic marker to said first element; (b) fixing a second magnetic marker to said second element; (c) sensing the positions of the two markers by a remote magnetic sensing technique. Optionally, a third magnetic marker may be used, the second and third markers then preferably being located at the extremes of travel of said first element. The method may be used to determine linear or angular relationships.