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:
Apr. 04, 1989
Filed:
Jun. 29, 1987
Applicant:
Inventor:
Peter E Jacobson, Phoenix, AZ (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341 13 ; 2502 / ;
Abstract
An angular position encoder utilizes Moire fringes formed by illuminating regions of coded images arranged circumferentially on wheels rotatable in accordance with angles to be encoded. Movement of the Moire fringes from a reference position is detected and used to determine the angular movement. All non-rotating movements of the coded wheel are compensated by the encoding process and do not effect the output.