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. 02, 1985
Filed:
Jul. 26, 1982
Applicant:
Inventors:
Kenichi Suzuki, Isehara, JP;
Kazunari Yamada, Atsugi, JP;
Assignee:
Kazunari Yamada, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340572 ; 73654 ;
Abstract
A detectable element is attached to an object for detecting the presence or passage of the object and comprises a capsule and a permanent magnet rotatably and vibratably mounted in the capsule. When the detectable element enters an alternating magnetic field, the permanent magnet rotates or vibrates within the capsule to thereby produce a magnetic wave or an audible sound, which is picked up to detect the detectable element.