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. 28, 2015
Filed:
Apr. 19, 2011
Applicants:
Benjamin P Gottemoller, Peoria, IL (US);
Isaac J Sachs, Peoria, IL (US);
Inventors:
Benjamin P Gottemoller, Peoria, IL (US);
Isaac J Sachs, Peoria, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/34 (2006.01); G06M 7/00 (2006.01); H01J 40/14 (2006.01); G01D 5/347 (2006.01);
U.S. Cl.
CPC ...
G01D 5/3473 (2013.01); G01D 5/34784 (2013.01);
Abstract
A rotary position sensor includes a rotatable disk, a first light sensor configured to generate a first opacity signal, a second light sensor configured to generate a second opacity signal, and a comparator. The opacity of the rotatable disk is substantially unique at each radial angle value. The comparator is configured to generate a disk position signal as a function of the first opacity signal and the second opacity signal.