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. 16, 2020
Filed:
Jan. 30, 2017
Applicant:
Sonion Nederland B.v., Hoofddorp, NL;
Inventors:
Rasmus Voss, Hoofddorp, NL;
Haico van Oosten, Hoofddorp, NL;
Camiel Eugène Groffen, Hoofddorp, NL;
Laurens de Ruijter, Hoofddorp, NL;
Koen van Gilst, Hoofddorp, NL;
Frederik Cornelis Blom, Hoofddorp, NL;
Assignee:
Sonion Nederland B.V., Hoofddorp, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 19/02 (2006.01); H04R 19/00 (2006.01); H04R 19/04 (2006.01); H04R 1/24 (2006.01); H04R 3/14 (2006.01); H04R 1/10 (2006.01);
U.S. Cl.
CPC ...
H04R 19/02 (2013.01); H04R 1/24 (2013.01); H04R 3/14 (2013.01); H04R 19/005 (2013.01); H04R 19/04 (2013.01); H04R 1/1075 (2013.01); H04R 2201/003 (2013.01);
Abstract
An assembly of a transformer and an electrostatic sound generator is especially efficient if the resonance frequency of the diaphragm is in the frequency range in which the generator is operated, such as in the interval of 1-20 kHz. Then, a smaller transformer with a winding ratio of 5000 or less may be used for feeding the sound generator, making the assembly suitable for hearing aid purposes or in-ear products such as for pro audio use.