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, 2017
Filed:
Jun. 05, 2015
Applicant:
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v., Munich, DE;
Inventors:
Daniel Beer, Martinroda, DE;
Lutz Ehrig, Dresden, DE;
Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/42 (2006.01); H04R 1/02 (2006.01); H04R 1/28 (2006.01); H04R 29/00 (2006.01);
U.S. Cl.
CPC ...
H04R 1/42 (2013.01); H04R 1/02 (2013.01); H04R 1/2803 (2013.01); H04R 29/001 (2013.01);
Abstract
A loudspeaker includes a sound transducer, a housing and a unit configured to influence the temperature, such as a pressure compensation element. The sound transducer includes a membrane, the membrane enclosing a gas volume along with the housing. The sound transducer is configured to cause the membrane to vibrate, so that the gas volume is changed in accordance with the vibration. The unit configured to influence the temperature is configured to counteract a change of state, which is due to the membrane vibration, by means of a change in temperature of the gas volume.