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:
Dec. 02, 2003
Filed:
Jul. 29, 2002
Applicant:
Inventors:
Lee Macklin, Colorado Springs, CO (US);
Jessica Kraemer, Colorado Springs, CO (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 2/100 ;
U.S. Cl.
CPC ...
G01C 2/100 ;
Abstract
An electronic pedometer to accurately measure stride length of a walker includes a processing unit with an ultrasonic sound wave receiver attached to one foot and an ultrasonic sound wave generator attached to the other foot. Pressure sensitive switches close when each foot makes a step, providing signals to the processing unit to record the number of strides. The processing unit computes stride length by calculating distances using the ultrasonic sound waves.