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:
May. 13, 2003
Filed:
Oct. 24, 2001
Kazuya Nanbu, Saitama, JP;
Makoto Chiba, Saitama, JP;
Daiwa Seiko, Inc., Tokyo, JP;
Abstract
A line length measuring device for a fishing reel in which the spool diameter data is obtained on the basis of the time for which an ultrasonic wave is radiated from the ultrasonic sensor mounted on a reel main body onto a spool face of the spool and its reflected wave is received by the ultrasonic sensor, and the line length is measured from the spool diameter data and the number of rotations of the spool detected by rotational number detecting means and displayed. A velocity measuring device is provided for detecting a velocity of the ultrasonic wave radiated from the ultrasonic sensor, in which the spool diameter data is acquired on the basis of the velocity of ultrasonic wave measured by the velocity measuring means.