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:
Jun. 01, 2004
Filed:
Nov. 29, 2001
Tomoaki Ito, Tokyo, JP;
Masami Tanaka, Tokyo, JP;
Tadashi Kubota, Tokyo, JP;
Yasuhiro Masuzaki, Tokyo, JP;
Osamu Uchiyama, Tokyo, JP;
Hirose Electric Co., Ltd., Tokyo, JP;
Abstract
A pulse signal generator comprising a magnetic element able ( ) to cause a large Barkhausen jump; a detection member ( ) for detecting a magnetic change in the magnetic element to generate a pulse signal; and a pair of magnetic field sources ( and ) provided in parallel to each other on both sides of the magnetic element such that their poles ( A, A) are opposed to each other so that when an object ( A) advances from one of opposite poles to the other of the magnetic field sources, a magnetic field applied to the magnetic element changes, causing a large Barkhausen jump in the magnetic element, thus causing the detection member to generate a pulse signal.