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. 06, 1995
Filed:
Jan. 04, 1993
Melvin A Lace, Prospect Heights, IL (US);
Other;
Abstract
An electromagnetic pickup for a musical instrument, such as a guitar, strung with ferromagnetic strings, comprises an elongated laminated ferromagnetic (steel) core long enough to span all of the strings; there are at least four and usually six thin steel laminations in the core. An electrical pickup coil is wound in a coil form, usually plastic, that encompasses the core, and a vertically magnetized main permanent magnet engages the bottom edge of the core. The magnet is preferably formed of a resin impregnated with magnetic particles, is magnetized transversely, and maintains the core at a given polarity. A housing encloses the core, the coil, and the main magnet and provides for mounting the pickup in spaced relation to the strings so that the magnetic field encompasses the strings and string movement generates electrical signals to the coil. Preferably, there are additional permanent magnets to shield the sides of the core. Dual-coil humbucker embodiments of the pickup are described.