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1. WO2020112615 - COMPOSITE DIAPHRAGMS HAVING BALANCED STRESS

Publication Number WO/2020/112615
Publication Date 04.06.2020
International Application No. PCT/US2019/062964
International Filing Date 25.11.2019
IPC
H04R 7/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers; Cones
02characterised by the construction
04Plane diaphragms
H04R 7/16 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers; Cones
16Mounting or tensioning of diaphragms or cones
H04R 31/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
31Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
H04R 1/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
08Mouthpieces; Attachments therefor
B06B 1/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
BGENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
1Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency
02making use of electrical energy
CPC
B06B 1/02
BPERFORMING OPERATIONS; TRANSPORTING
06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, ; e.g.; FOR PERFORMING MECHANICAL WORK IN GENERAL
1Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
02making use of electrical energy
H04R 1/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
08Mouthpieces; Microphones;; Attachments therefor
H04R 19/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
19Electrostatic transducers
H04R 31/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
31Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
H04R 7/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers
02characterised by the construction
04Plane diaphragms
H04R 7/16
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
7Diaphragms for electromechanical transducers
16Mounting or tensioning of diaphragms or cones
Applicants
  • KNOWLES ELECTRONICS, LLC [US]/[US]
Inventors
  • LOEPPERT, Peter
  • LEE, Sung Bok
Agents
  • BELDEN, Brett P.
  • GUNDERSEN, Jeffrey S.
Priority Data
62/774,18201.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMPOSITE DIAPHRAGMS HAVING BALANCED STRESS
(FR) DIAPHRAGMES COMPOSITES AYANT DES CONTRAINTES ÉQUILIBRÉES
Abstract
(EN)
An acoustic transducer comprises a transducer substrate defining an aperture therein. A diaphragm is disposed on the transducer substrate. The diaphragm comprises a diaphragm inner portion disposed over the aperture such that an outer edge of the diaphragm inner portion is located radially inwards of a rim of the aperture, the diaphragm inner portion having a first stress. A diaphragm outer portion extends radially from the outer edge of the diaphragm inner portion to at least the rim of the aperture, the diaphragm outer portion having a second stress different from the first stress.
(FR)
Un transducteur acoustique comprend un substrat de transducteur définissant une ouverture à l'intérieur de celui-ci. Un diaphragme est disposé sur le substrat de transducteur. Le diaphragme comprend une partie interne de diaphragme disposée sur l'ouverture de telle sorte qu'un bord externe de la partie interne du diaphragme est situé radialement vers l'intérieur d'un bord de l'ouverture, la partie interne du diaphragme ayant une première contrainte. Une partie externe de diaphragme s'étend radialement depuis le bord externe de la partie interne du diaphragme vers au moins le bord de l'ouverture, la partie externe de diaphragme ayant une seconde contrainte différente de la première contrainte.
Latest bibliographic data on file with the International Bureau