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:
Aug. 10, 2021
Filed:
Aug. 05, 2020
Applicant:
Donald L Baker, Tulsa, OK (US);
Inventor:
Donald L Baker, Tulsa, OK (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H 3/18 (2006.01); G10H 3/22 (2006.01); G10H 1/26 (2006.01); G10H 1/46 (2006.01); G10H 3/14 (2006.01); G10H 1/34 (2006.01);
U.S. Cl.
CPC ...
G10H 3/181 (2013.01); G10H 1/26 (2013.01); G10H 1/342 (2013.01); G10H 1/46 (2013.01); G10H 3/143 (2013.01); G10H 3/185 (2013.01); G10H 3/186 (2013.01); G10H 3/188 (2013.01); G10H 3/22 (2013.01); G10H 2220/505 (2013.01); G10H 2250/235 (2013.01);
Abstract
This invention eliminates most mechanical switching in vibrational pickup circuits by using variable gains to combine signals of sensors in differential amplifiers as J−1 humbucking pairs for J>1 number of sensors, with the sensors matched to produce the same level and phase of unwanted hum from external sources. It can also combine J>1 number of matched sensors with K>1 number of dissimilar sensors which are matched only to each other in the same manner. This produces not only all the possible mechanically switched humbucking signals, but all the continuously-varying combinations of humbucking signals in between.