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:
Jan. 03, 1995
Filed:
Jan. 12, 1993
Kenji Tumura, Osaka, JP;
Fernandes Co., Ltd., Tokyo, JP;
Abstract
An electric stringed instrument comprises an electromagnetic pickup having a permanent magnet and a string signal detecting coil wound around the permanent magnet and magnetically combined with the permanent magnet, an electromagnetic force producing unit having a driving coil to produce a magnetic force and being placed in the neighborhood of the electromagnetic pickup, and an adjusting unit provided with a part of a current flowing in the driving coil of the electromagnetic force producing unit and disposed at a place magnetically combined with the string signal detecting coil of the electromagnetic pickup. One induced electromotive force caused by magnetic flux from the adjusting unit and another induced electromotive force caused by magnetic flux from the electromagnetic force producing unit negate each other in the string signal detecting coil.