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:
Feb. 05, 2008
Filed:
Nov. 18, 2005
Applicant:
Christopher J. Courtney, Rockford, IL (US);
Inventor:
Christopher J. Courtney, Rockford, IL (US);
Assignee:
Hamilton Sundstrand Corporation, Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A speed sensor includes a magnetic pickup generating a cyclical output based upon passing teeth of a rotating gear. A counter counts the number of clock pulses that are generated during a measurement period of the cyclical output. The measurement period, in terms of cycles of the cyclical output, is varied based upon the number of pulses that were counted in a previous measurement period. Thus, at lower speeds, the number of clock pulses generated during fewer cycles is counted, while at higher speeds the number of clock pulses generated during more cycles is counted.